an evaluation of davis islands landscape irrigation...

AN EVALUATION OF DAVIS ISLANDSLANDSCAPE IRRIGATION SYSTEM

CONSERVATION PROGRAM

Report Prepared For:

The City of Tampa Water DepartmentWater Conservation Section

June 1996

Report Prepared By:

AYRES ASSOCIATES3901 Coconut Palm Drive, Suite 100

Tampa, Florida 33619

Ayres JN: 30-0180.00

AVESASSOCIATES

AN EVALUATION OF DAVIS ISLANDSLANDSCAPE IRRIGATION SYSTEM

CONSERVATION PROGRAM

Report Prepared For:

The City of Tampa Water DepartmentWater Conservation Section

June 1996

PROJECT DIRECTOR:

Damann L. Anderson, PEVice President - Applied Technologies

Ayres Associates, Tampa, FLAyres JN: 30-0180.00

PROJECT TEAM:

Tampa Water Department Ayres AssociatesNeil Mingledorff, C.L.I.A. Diane Mulville-Friel, AICP

TABLE OF CONTENTS

Section Page

F IG U R E S ................................................................................................................. iii

T A B L E S ................................................................................................................. iv

A P P E N D IC ES ......................................................................................................... v

EXECUTIVE SUM MARY ................................................................................. ........ 1

1.0 INTRODUCTION............................... .................. ................................... 1-1

2.0 SENSIBLE SPRINKLING PROGRAM BACKGROUND........................... 2-1

2.1 PROGRAM ELEMENTS................................................................2-12.2 PROGRAM IMPLEMENTATION .......................................................... 2-22.3 PRO G RA M CO STS ........................................ .................................... 2-22.4 PROGRAM EVALUATION................................................................2-3

3.0 M ETH O D O LO G Y ........................................................................................... 3-1

3.1 SELECTION OF STUDY HOMES......................................................... 3-13.2 IRRIGATION SYSTEM CHARACTERISTICS DATA

COLLECTION AND ANALYSIS ..................................................... 3-13.3 HOUSEHOLD CHARACTERISTICS AND HOMEOWNER

ACCEPTANCE DATA COLLECTION AND ANALYSIS......................3-33.4 WATER USE DATA COLLECTION AND ANALYSIS ......................... 3-33.5 WEATHER DATA COLLECTION AND ANALYSIS.............................3-6

4.0 STUDY RESULTS ................................................................................... 4-1

4.1 PROGRAM IMPLEMENTATION .......................................................... 4-14.2 IRRIGATION SYSTEM EVALUATIONS...............................................4-14.3 HOUSEHOLD CHARACTERISTICS ................................... ........ 4-34.4 HOMEOWNER ACCEPTANCE................................................. ..... 4-94.5 WATER USE CHARACTERISTICS................................................ 4-144.6 WEATHER CONDITIONS.............................................. ..... .... 4-20

5.0 SUMMARY AND CONCLUSIONS ............................................................ 5-1

6.0 REFERENCES ....................................................................................... 6-1

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FIGURES

FIGURE 3-1 DAVIS ISLANDS NEIGHBORHOOD LOCATION MAP................................... 3-2

FIGURE 4-1 DAVIS ISLANDS STUDY HOUSEHOLDS' LANDSCAPE IRRIGATIONSYSTEMS INSTALLATION DATES .................................................................. 4-6

FIGURE 4-2 DAVIS ISLANDS STUDY HOUSEHOLDS' LANDSCAPE IRRIGATIONSYSTEMS INSTALLATION ARRANGEMENTS .............................................. 4-6

FIGURE 4-3 WHERE DAVIS ISLANDS STUDY HOUSEHOLDS OBTAINEDINFORMATION ON HOW LONG TO RUN THEIR IRRIGATION SYSTEMTIM ERS ............................................................. ...................... ................. 4-7

FIGURE 4-4 WHO MAINTAINED DAVIS ISLANDS STUDY HOUSEHOLDS'LA N D S C A P ES ................................................................................................. 4-8

FIGURE 4-5 DAVIS ISLANDS STUDY HOUSEHOLDS WITH OR WITHOUTSEPARATE LAWN IRRIGATION METERS...................................................4-8

FIGURE 4-6 PERCENT OF IRRIGATION WATERING TIME CHANGESTHAT DAVIS ISLANDS PARTICIPANTS REPORTEDLY MADE.................. 4-10

FIGURE 4-7 WHY DAVIS ISLANDS PARTICIPANTS REPORTEDLY DIDNOT MAKE IRRIGATION WATERING TIME CHANGES .............................. 4-11

FIGURE 4-8 PERCENT OF CHANGES DAVIS ISLANDS PARTICIPANTSMADE TO REPAIR OR MODIFY THEIR IRRIGATIONSYSTEMS' DESIGN AND/OR CONDITION.................................................4-12

FIGURE 4-9 WHY DAVIS ISLANDS PARTICIPANTS REPORTEDLY DIDNOT REPAIR OR MODIFY THEIR IRRIGATION SYSTEM'SDESIGN AND/OR CONDITION..................... ....................................... 4-13

FIGURE 4-10 CONDITION OF DAVIS ISLANDS PARTICIPANTS' LANDSCAPESAFTER MAKING CHANGES TO THEIR IRRIGATION SYSTEMS ...............4-14

FIGURE 4-11 AVERAGE DAILY RAINFALL RECORDED DURING DAVISISLANDS PRE-EVALUATION PERIOD.........................................................4-22

FIGURE 4-12 AVERAGE DAILY RAINFALL RECORDED DURING DAVISISLANDS POST-EVALUATION PERIOD ...................................................... 4-22

FIGURE 4-13 NUMBER OF DAYS WITH SIGNIFICANT RAINFALL DURINGDAVIS ISLANDS PRE-EVALUATION PERIOD............................................. 4-23

FIGURE 4-14 NUMBER OF DAYS WITH SIGNIFICANT RAINFALL DURINGDAVIS ISLANDS POST-EVALUATION PERIOD...........................................4-23

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TABLES

TABLE 4-1 PARTICIPANT HOUSEHOLDS' SPRINKLER SYSTEMCHARACTERISTICS ANDIOR PROBLEMS IDENTIFIEDDURING IRRIGATION SYSTEM EVALUATIONS....................................4-2

TABLE 4-2 PARTICIPANT HOUSEHOLDS' IRRIGATION WATER USEESTIMATES DERIVED FROM SYSTEM EVALUATIONS.............................4-3

TABLE 4-3 STUDY HOUSEHOLDS' CHARACTERISTICS...........................................4-5

TABLE 4-4 DAVIS ISLANDS PARTICIPANTS' OVERALL SATISFACTIONWITH THE IRRIGATION SYSTEM EVALUATION PROGRAM ..................... 4-9

TABLE 4-5 TOTAL WATER USE RECORDED FOR ALL STUDY HOUSEHOLDS.........4-15

TABLE 4-6 TOTAL WATER USE RECORDED FOR STUDY HOUSEHOLDSWITH SEPARATE LAWN METERS.. ....................................................... 4-16

TABLE 4-7 IRRIGATION WATER USE RECORDED FOR STUDY HOUSEHOLDSWITH SEPARATE LAWN METERS............................................................... 4-17

TABLE 4-8 OTHER WATER USE RECORDED FOR STUDY HOUSEHOLDSWITH SEPARATE LAWN METERS...........................................................4-17

TABLE 4-9 TOTAL WATER USE RECORDED FOR STUDY HOUSEHOLDSWITH AND WITHOUT SEPARATE LAWN METERS...................................4-19

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APPENDICES

APPENDIX A SENSIBLE SPRINKLING PROGRAM INFORMATION

EXHIBIT A-1 PROGRAM BROCHURE - THE CITY OF TAMPA GUIDE TO WATEREFFICIENT LANDSCAPING "SENSIBLE SPRINKLING"

EXHIBIT A-2 TYPICAL IRRIGATION SYSTEM EVALUATION REPORT

TABLE A-1 DAVIS ISLANDS HOUSEHOLDS THAT RECEIVED IRRIGATIONSYSTEM EVALUATIONS

TABLE A-2 DAVIS ISLANDS HOUSEHOLD'S SPRINKLER SYSTEMCHARACTERISTICS AND/OR PROBLEMS IDENTIFIED DURINGIRRIGATION SYSTEM EVALUATIONS

TABLE A-3 DAVIS ISLANDS HOUSEHOLD'S IRRIGATION WATER USE ESTIMATESDERIVED FROM IRRIGATION SYSTEM EVALUATIONS

APPENDIX B DAVIS ISLANDS STUDY HOUSEHOLDS' QUESTIONNAIRES ANDRESPONSES

EXHIBIT B-1 DAVIS ISLANDS PARTICIPANT QUESTIONNAIRE

EXHIBIT B-2 DAVIS ISLANDS CONTROL QUESTIONNAIRE

TABLE B-1A DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' QUESTIONNAIRERESPONSES (QUESTIONS 4D AND 11-21, EXCLUDING OPENCOMMENT QUESTIONS)

TABLE B-1B DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' QUESTIONNAIRERESPONSES (QUESTIONS 1-9, EXCLUDING Q4D AND OPEN COMMENTQUESTIONS)

TABLE B-2 DAVIS ISLANDS HOUSEHOLDS' QUESTIONNAIRE RESPONSES

APPENDIX C DAVIS ISLANDS STUDY HOUSEHOLDS' WATER USE DATA

EXHIBIT C-IA STATISTICAL ANALYSES - PRE-EVALUATION TOTAL WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS

EXHIBIT C-1B STATISTICAL ANALYSES - POST-EVALUATION TOTAL WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS

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APPENDICES (continued)

EXHIBIT C-2A STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS' TOTAL WATERUSE, PRE- VS. POST-EVALUATION

EXHIBIT C-2B STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' TOTAL WATER USE,PRE- VS. POST-EVALUATION

EXHIBIT C-3A STATISTICAL ANALYSES - PRE-EVALUATION TOTAL WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-3B STATISTICAL ANALYSES - POST-EVALUATION TOTAL WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-4A STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS WITH LAWNMETERS, PRE- VS. POST-EVALUATION TOTAL WATER USE

EXHIBIT C-4B STATISTICAL ANALYSES - CONTROL HOUSEHOLDS WITH LAWN METERS,PRE- VS. POST-EVALUATION TOTAL WATER USE

EXHIBIT C-5A STATISTICAL ANALYSES - PRE-EVALUATION IRRIGATION WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-5B STATISTICAL ANALYSES - POST-EVALUATION IRRIGATION WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-6A STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS WITH LAWNMETERS, PRE- VS. POST-EVALUATION IRRIGATION WATER USE

EXHIBIT C-6B STATISTICAL ANALYSES - CONTROL HOUSEHOLDS WITH LAWN METERS,PRE- VS. POST-EVALUATION IRRIGATION WATER USE

EXHIBIT C-7 STATISTICAL ANALYSES - DIFFERENCE BETWEEN PRE- AND POST-IRRIGATION WATER USE AVERAGES, PARTICIPANT HOUSEHOLDS WITHLAWN METERS VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-8A STATISTICAL ANALYSES - PRE-EVALUATION OTHER WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-8B STATISTICAL ANALYSES - POST-EVALUATION OTHER WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERS

EXHIBIT C-9A STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS WITH LAWNMETERS, PRE- VS. POST-EVALUATION OTHER WATER USE

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EXHIBIT C-9B STATISTICAL ANALYSES - CONTROL HOUSEHOLDS WITH LAWN METERS,PRE- VS. POST-EVALUATION OTHER WATER USE

EXHIBIT C-10A STATISTICAL ANALYSES - PRE-EVALUATION TOTAL WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITHOUT LAWN METERS

EXHIBIT C-10B STATISTICAL ANALYSES - POST-EVALUATION TOTAL WATER USE,PARTICIPANT VS. CONTROL HOUSEHOLDS WITHOUT LAWN METERS

EXHIBIT C-11A STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS' PRE-EVALUATIONTOTAL WATER USE, WITH VS. WITHOUT LAWN METERS

EXHIBIT C-11B STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS' POST-EVALUATION TOTAL WATER USE, WITH VS. WITHOUT LAWN METERS

EXHIBIT C-12A STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' PRE-EVALUATIONTOTAL WATER USE, WITH VS. WITHOUT LAWN METERS

EXHIBIT C-12B STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' POST-EVALUATIONTOTAL WATER USE, WITH VS. WITHOUT LAWN METERS

EXHIBIT C-13A STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS' WITHOUT LAWNMETERS, PRE-VS. POST-EVALUATION TOTAL WATER USE

EXHIBIT C-13B STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' WITHOUT LAWNMETERS, PRE- VS. POST-EVALUATION TOTAL WATER USE

EXHIBIT C-14A STATISTICAL ANALYSES - DIFFERENCE BETWEEN PARTICIPANTHOUSEHOLDS' PRE- AND POST-EVALUATION TOTAL WATER USE, WITHVS. WITHOUT LAWN METERS

EXHIBIT C-14B STATISTICAL ANALYSES - DIFFERENCE BETWEEN CONTROLHOUSEHOLDS' PRE- AND POST-EVALUATION TOTAL WATER USE, WITHVS. WITHOUT LAWN METERS

TABLE C-1A BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSPARTICIPANT HOUSEHOLDS (MARCH 1993-JULY 1994)

TABLE C-1B BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSCONTROL HOUSEHOLDS (MARCH 1993-JULY 1994)

TABLE C-2A BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSPARTICIPANT HOUSEHOLDS (JUNE 1994-OCTOBER 1995)

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TABLE C-2B BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSCONTROL HOUSEHOLDS (JUNE 1994-OCTOBER 1995)

TABLE C-3A BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSPARTICIPANT HOUSEHOLDS WITH IRRIGATION METERS (MARCH 1993-JULY 1994)

TABLE C-3B BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSCONTROL HOUSEHOLDS WITH IRRIGATION METERS (MARCH 1993-JULY1994)

TABLE C-4A BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSPARTICIPANT HOUSEHOLDS WITH IRRIGATION METERS (JUNE 1994-OCTOBER 1995)

TABLE C-4B BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSCONTROL HOUSEHOLDS WITH IRRIGATION METERS (JUNE 1994-OCTOBER 1995)

TABLE C-5A BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSPARTICIPANT HOUSEHOLDS WITHOUT IRRIGATION METERS (MARCH1993-JULY 1994)

TABLE C-5B BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSCONTROL HOUSEHOLDS WITHOUT IRRIGATION METERS (MARCH 1993-JULY 1994)

TABLE C-6A BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVISISLANDS PARTICIPANT HOUSEHOLDS WITHOUT IRRIGATION METERS(JUNE 1994-OCTOBER 1995)

TABLE C-6B BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDSHOUSEHOLDS WITHOUT IRRIGATION METERS (JUNE 1994-OCTOBER1995)

TABLE C-7A DIFFERENCE BETWEEN PRE AND POST BI-MONTHLY TOTAL WATER USEFOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS (MARCH 1993 -OCTOBER 1995).

TABLE C-7B DIFFERENCE BETWEEN PRE AND POST BI-MONTHLY TOTAL WATER USEFOR DAVIS ISLANDS CONTROL HOUSEHOLDS (MARCH 1993 - OCTOBER1995).

FIGURE C-1A DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' AVERAGE PRE-EVALUATION TOTAL WATER USE (114 HOMES).

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FIGURE C-1B DAVIS ISLANDS CONTROL HOUSEHOLDS' AVERAGE PRE-EVALUATION TOTAL WATER USE (113 HOMES).

FIGURE C-2A DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' AVERAGE POST-EVALUATION TOTAL WATER USE (114 HOMES).

FIGURE C-2B DAVIS ISLANDS CONTROL HOUSEHOLDS' AVERAGE POST-EVALUATION TOTAL WATER USE (113 HOMES).

FIGURE C-3A DIFFERENCE BETWEEN DAVIS ISLANDS PARTICIPANT HOUSEHOLDS'AVERAGE PRE- AND POST-EVALUATION TOTAL WATER USE (114HOMES).

FIGURE C-3B DIFFERENCE BETWEEN DAVIS ISLANDS CONTROL HOUSEHOLDS'AVERAGE PRE- AND POST-EVALUATION TOTAL WATER USE (113HOMES).

APPENDIX D HOWARD F. CURREN WASTEWATER TREATMENT PLANTWEATHER STATION DATA

EXHIBIT D-1A STATISTICAL ANALYSES - DAILY RAINFALL (INCHES), CUMULATIVEPRE- VS. CUMULATIVE POST-EVALUATION PERIODS

EXHIBIT D-1 B STATISTICAL ANALYSES - NUMBER OF DAYS WITH SIGNIFICANTRAINFALL, CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATIONPERIODS

EXHIBIT D-2A STATISTICAL ANALYSES - DAILY RAINFALL (INCHES), HOUSE NO. 1CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATION PERIODS

EXHIBIT D-2B STATISTICAL ANALYSES - NUMBER OF DAYS WITH SIGNIFICANTRAINFALL, HOUSE NO. 1 CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATION PERIODS

EXHIBIT D-3A STATISTICAL ANALYSES - DAILY RAINFALL (INCHES), HOUSE NO. 160CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATION PERIODS

EXHIBIT D-3B STATISTICAL ANALYSES - NUMBER OF DAYS WITH SIGNIFICANTRAINFALL, HOUSE NO. 160 CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATION PERIODS

EXHIBIT D-4A STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL AND PARTICIPANT HOUSEHOLDS' BI-MONTHLYPRE-EVALUATION IRRIGATION WATER USE.

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EXHIBIT D-4B STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL AND PARTICIPANT HOUSEHOLDS' BI-MONTHLYPOST-EVALUATION IRRIGATION WATER USE.

EXHIBIT D-4C STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINFALL DAYS AND PARTICIPANTHOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATERUSE.

EXHIBIT D-4D STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINFALL DAYS AND CONTROLHOUSEHOLDS' BI-MONTHLY POST-EVALUATION IRRIGATION WATERUSE.

EXHIBIT D-5A STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL AND CONTROL HOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATER USE.

EXHIBIT D-5B STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL AND CONTROL HOUSEHOLDS' BI-MONTHLYPOST-EVALUATION IRRIGATION WATER USE.

EXHIBIT D-5C STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINFALL DAYS AND CONTROLHOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATERUSE.

EXHIBIT D-5D STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINFALL DAYS AND CONTROLHOUSEHOLDS' BI-MONTHLY POST-EVALUATION IRRIGATION WATERUSE.

TABLE D-1 TOTAL DAILY PRECIPITATION RECORDED AT THE HOWARD F.CURREN WASTEWATER TREATMENT PLANT

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EXECUTIVE SUMMARY

The City of Tampa Water Department developed a program called Sensible Sprinklingdesigned to educate homeowners and improve their outdoor water use efficiency. TheCity's goal is to reduce residential landscape water use by 25 percent. Landscapeirrigation system evaluations, designed to determine the efficiency of a homeowner'sexisting landscape irrigation system, were one of the most important elements of theSensible Sprinkling program.

The West Coast Regional Water Supply Authority (WCRWSA) conducted irrigation systemevaluations with assistance from the Soil Conservation Service (SCS), a division of theU.S. Department of Agriculture. Irrigation system evaluations were conducted byWCRWSA and SCS using the Mobile Irrigation Laboratory Evaluation Program developedby the University of Florida Institute of Food and Agricultural Sciences (IFAS). The Cityof Tampa retained Ayres Associates to assess the irrigation system evaluations andwater savings realized by households located in the neighborhood of Davis Islands.

Two groups of Davis Islands households were selected for this study; participant andcontrol homes. Participants volunteered to have irrigation system evaluationscompleted as part of the City's Sensible Sprinkling program. Controls were homeswithin the neighborhood that did not participate in the program but had similar householdcharacteristics. Control homes were selected to ascertain whether any difference inwater use realized by participant homes after having had irrigation system evaluationscompleted were due to the evaluations and not caused by external factors experiencedby the entire community or neighborhood.

Participants implementation of changes recommended to their irrigation systems andtheir satisfaction with the program were assessed by evaluating responses tohomeowner questionnaires. Questionnaires were returned by 49 percent of thehomeowners involved.

Participants were generally satisfied with the overall program as evident by the weightedaverage satisfaction rating of 8.8 on a scale of one (very dissatisfied) to ten (verysatisfied). Program characteristics such as how understandable the report was and howrealistic it was to implement the changes also received positive weighted averagesatisfaction ratings of 8.8 and 8.2, respectively.

Approximately 78 percent of the respondents indicated that they implemented some ofthe changes recommended with regard to irrigation watering times, 24 made somechanges recommended with regard to replacing their existing landscape/plant stock, and

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81 percent implemented some of the changes recommended to repair or modify theirparticular irrigation system's design and/or condition. Thirty-two percent of all studyhouseholds stated that they had installed a rain shut-off device. Approximately 71percent of the respondents indicated their landscapes looked the same after changeswere made compared to before, none responded that their landscapes were worse, and29 percent said they were better.

To assess any reductions in water use achieved by residents that had landscapeirrigation system evaluations completed, bi-monthly water use records for bothparticipant households and control households were obtained through the Tampa WaterDepartment. Pre- and post-evaluation water use data (i.e., 12 months before and 12months after irrigation evaluation, respectively) was available for 114 of the 157participant households and 113 of the 157 control homes selected.

Davis Islands participant households' total water use averaged 673 gallons per houseper day (g/h/d) during their pre-evaluation period and 490 g/h/d during their post-evaluation period. The 183 g/h/d difference between participants' pre- and post-evaluation total water use averages represented a statistically significant reduction.

Davis Islands control households' total water use averaged 610 g/h/d during their pre-evaluation period and 505 g/h/d during their post-evaluation period. The 105 g/h/ddifference between control households' pre- and post-evaluation total water useaverages also represented a statistically significant reduction.

The data show that both participant and control households' total water use averageswere significantly less during the post-evaluation period than averages recorded during

the pre-evaluation period. There was no significant difference between participant andcontrol households' post-evaluation total water use averages.

To obtain a more accurate estimate of reductions in water use from irrigation systemchanges, households with separate lawn irrigation meters were grouped and their

average pre- and post-evaluation water uses were compared. The 72 Davis Islandsparticipant households with separate lawn meters used 570 g/h/d of lawn irrigation water

during the pre-evaluation study period and 354 g/h/d during the post-evaluation study

period. These results translated into a statistically significant reduction in lawn irrigation

water of 216 g/h/d (38 percent). Other water use by these homes was consistentbetween the pre- and post-evaluation periods, suggesting the reductions were fromchanges to lawn irrigation water use.

The 64 Davis Islands control households with separate lawn meters used 506 g/h/d oflawn irrigation water during the pre-evaluation study period and 348 g/h/d during thepost-evaluation study period. These results translated into a statistically significantreduction in lawn irrigation water of 158 g/h/d (31 percent). Other water use by these


June 1996

homes was consistent between the pre- and post-evaluation periods, suggesting thereductions were from changes to lawn irrigation water use.

The data can not be used to conclude that the reduction in irrigation water used by

participant homes during the post-evaluation period was due to the irrigation evaluationaudits. Participant households' irrigation water use averages during the pre- and post-evaluation periods were not significantly different from those experienced by controlhomes. Reductions in irrigation water use experienced by participant and control homes

with separate lawn irrigation meters were both statistically significant and, although

participants averaged 58 g/h/d more of a reduction in irrigation water use than control

homes, their pre- and post-evaluation differences were not statistically significant.

To assess whether households with separate lawn meters used more or less water than

homes with only one meter installed, 42 participant homes and 48 control homes withonly one total water use meter were grouped and their average pre- and post-evaluation

total water use were compared to households with separate irrigation meters. Resultsindicated that during the pre-evaluation monitoring period, participant households with

separate lawn irrigation meters averaged 790 g/h/d total water use compared to anaverage 473 g/h/d for participant households that had only one meter. This differencemost likely reflects the fact that customers with separate lawn meters did not pay sewer

charges for irrigation water and therefore probably used irrigation water moreindiscriminately.

Reductions in total water use experienced by participant homes with and withoutseparate lawn irrigation meters were both statistically significant; however, those withlawn meters experienced a greater total water use reduction than homes without lawn

meters experienced.

During the pre-evaluation monitoring period, control households with separate lawn

irrigation meters averaged 766 g/h/d total water use compared to an average 403 g/h/d

for households that have only one meter. Similar to participant homes, control

households with separate lawn irrigation meters used significantly more water during thepre-evaluation period than controls without lawn meters experienced. Furthermore,control households with separate lawn meters experienced an average 21 percent (158

g/h/d) reduction in total water use compared to a 9 percent (35 g/h/d) reductionexperienced by homes with one meter installed.

Reductions in total water use experienced by control homes with separate lawn irrigation

meters were statistically significant; however, the 9 percent reduction experienced by

controls households without lawn meters was not statistically significant. As was thecase with participant households, control homes with lawn meters experienced a greatertotal water use reduction than homes without lawn meters experienced.


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Rainfall data were used to compare weather conditions and assess whether the pre-evaluation period differed significantly from the post-evaluation period. Analyses ofrainfall data suggest the reduction in irrigation water use experienced by both participantand control households during the post-evaluation study period may have been partiallycaused by increases in rainfall.

In conclusion, the results of the Davis Islands study leads to speculation that theincrease in rainfall during the post-evaluation period may have caused both groups ofstudy households to use less irrigation water. Results suggest that the SensibleSprinkling Program may have been responsible for a 10 percent reduction in water use(i.e., the difference between the control group's 17 percent and the participant group's27 percent difference in total water use). However, there are several other possibleexplanations for both Davis Islands control and participant households to have used lessirrigation water during the post-evaluation period. For example, all of Davis Islands mayhave been subject to stronger enforcement of irrigation watering restrictions during thepost-evaluation period. Another possibility is that control households reduced theamount of water they used to irrigate their landscapes because they were influencedthrough word of mouth via neighbors that participated in the Sensible Sprinkling programor through exposure to other program elements such as the landscape and irrigationworkshops or the water-wise landscape demonstration sites. Further study of thesepossible external influences need to be investigated. In addition, long-term monitoringof rainfall and water use for both Sunset Park and Davis Islands neighborhoods iscritical to determine the longevity of this type of water conservation program.


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1.0 INTRODUCTION

Potable water supplies in the Tampa Bay area are limited and have been stressed fromrapid growth and recent droughts which have reduced recharge to critical aquifers.Significant efforts are being expended by various units of government to identifyalternative water supplies and to reduce the current and future demands forconventional sources of water through conservation measures.

The City of Tampa has become a regional and national leader in water conservationeven though it is not highly dependent on groundwater for supply (approximately 80percent of the City's potable water supply is obtained from surface water sources).Since 1989, the City of Tampa Water Department has promoted water conservationthrough education and research as well as economic and regulatory incentives.Conservation programs and incentives have ranged from toilet rebate programs toadoption of conservation-related codes that address irrigation, landscape, and plumbing(City of Tampa Water Department, 1994). Tampa's conservation initiatives have beenaimed at both residential and non-residential water users as well as indoor andlandscape irrigation water use.

As part of their continued efforts to improve water use efficiency through conservation,the City of Tampa Water Department developed a program called "Sensible Sprinkling"for residential customers. The program's primary goals are for individual residents tobecome self-sufficient in improving outdoor water use efficiency and to reduceresidential customers' landscape water use by 25 percent. The Sensible Sprinklingprogram is offered on a neighborhood basis. Sunset Park was the first neighborhood toparticipate in the City's Sensible Sprinkling Program (Mingledorff, et. al., 1996). Thesecond neighborhood chosen to participate in the program was Davis Islands. Thisreport includes background on the design and implementation of Tampa's SensibleSprinkling program. It also includes the methodology employed and the analyses ofdata collected to evaluate Davis Islands households which had irrigation systemevaluations completed. This report focuses on Davis Islands households' acceptance ofthe irrigation system evaluations completed under the "Sensible Sprinkling" program andthe water savings achieved.

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2.0 SENSIBLE SPRINKLING PROGRAM BACKGROUND

The City of Tampa supplies water to approximately 90,000 single family residences.The City has estimated that 35 percent (25 million gallons per day) of its average dailydemand is attributable to this user group and that 21 percent of these residentialcustomers pay conservation surcharges because of excess use (City of Tampa WaterDepartment, 1994). Overwatering of landscapes is typically where most excess water isused. For those homes with in-ground irrigation systems, it is estimated that two-thirds ormore of their total water use is for landscaping. Recognizing the potential forconservation, the City of Tampa Water Department developed a six part extensiveeducation program called Sensible Sprinkling to educate homeowners on efficientlandscape water use. The Sensible Sprinkling program's unique approach educateshomeowners of the need for conservation and provides them with individualizedrecommendations on how their sprinkler systems and landscapes can be modified to savewater.

2.1 PROGRAM ELEMENTS

The City of Tampa's Sensible Sprinkling program for Davis Islands included five programelements. A brochure describing the current Sensible Sprinkling program which includessix elements is presented in Appendix A, Exhibit A-1. Individual program elements forDavis Islands are summarized below:

1) Irrigation Evaluations - Detailed irrigation system evaluations were performed toidentify system inefficiencies such as broken pipes or sprinkler heads, misalignedor mismatched heads, poor distribution uniformity, and foliage interference withsprinklers. In addition, existing irrigation schedules and timer settings werereviewed. Upon completion of the site evaluation, a report was prepared thatoutlined findings of the evaluation, recommendations for improving the efficiency ofthe system, a seasonal watering schedule, best management practices forturfgrass, and estimated water and dollar savings. This element comprised thebackbone of the program. A typical irrigation evaluation report is included inAppendix A, Exhibit A-2.

2) Landscape Evaluations - During the irrigation system evaluations, the landscapewas also evaluated based on the water needs of the plant. Landscape evaluationsfocused on design, and plant selection and maintenance characteristics. Turfareas were also inspected for problems due to water use or pests. Designrecommendations included such things as grouping plants according to their waterrequirements and reducing turf areas. A plant guide and environmental landscapebrochure were provided to homeowners.


June 1996

3) Rain Shut-off Devices - The City offered free automatic rain shut-off devices tohomeowners with sprinkler systems that could accommodate them. Thesedevices temporarily shut off an automatic system when there is sufficient rainfall,preventing unnecessary watering.

4) Water-Wise Landscape Demonstration Sites - Demonstration sites that promotethe principles of Xeriscape landscaping were established in participatingneighborhoods. When completed, these sites displayed a landscape mixingexisting plants with new flowering, native and drought tolerant plants and treesgrouped according to their water needs. The City chose a park on Davis Islands'for a demonstration site because its was visible and accessible for self-guidedtours. Information such as a plant list for the site, a plant guide, and irrigationinformation was included. Grand opening dedications promoted the site and werepublicized throughout the City.

5) Landscape and Irrigation Workshops - Two workshops were held to discussefficient watering practice, landscape maintenance problems and the benefits offollowing the Xeriscape landscaping principles. Participants addressed theirindividual needs to the instructors and left with solutions to those needs.Informational materials covering all aspects of water conservation were alsodistributed.

2.2 PROGRAM IMPLEMENTATION

Established neighborhoods with households that have a high number of separate lawnirrigation meters were targeted for the Sensible Sprinkling program because thesehouseholds typically have in-ground irrigation systems and large landscaped areas.Homeowner associations of such neighborhoods were informed of the Sensible Sprinklingprogram and if they chose to participate, the City mailed each resident a programbrochure. Residents contacted were asked to fill out and return a brief questionnaire and

to indicate whether they were interested in having a free landscape irrigation systemevaluation completed. To date, approximately 550 homeowners in six neighborhoodshave participated in the Sensible Sprinkling program.

2.3 PROGRAM COSTS

During the program's first two years, irrigation system evaluations were provided by theWest Coast Regional Water Supply Authority (WCRWSA) with assistance from the SoilConservation Service (SCS). Pursuant to an interlocal agreement with WCRWSA, theCity was charged $125 for each evaluation. However, the charges were applied to the


June 1996

City of Tampa's membership fee and were not charged to the Water Department'sConservation Program budget. The SCS offered their assistance at no charge. Irrigationsystem evaluations were conducted by WCRWSA and SCS using the Mobile IrrigationLaboratory Evaluation Program. The Mobile Irrigation Laboratory was developed by theUniversity of Florida Institute of Food and Agricultural Sciences (IFAS). In 1995, theseagencies were unable to continue providing their services. As a result, the City hascontracted out both the irrigation and landscape evaluations at a cost of $162 and $75each, respectively.

2.4 PROGRAM EVALUATION

As previously mentioned, irrigation system evaluations represent the backbone of theSensible Sprinkling program. Irrigation system evaluations have been completed for alarge number of households and reductions in outdoor water use were expected to begreat if households implement changes recommended to their systems. The City ofTampa retained Ayres Associates to assess acceptance of irrigation system evaluationsand water savings realized by households located in the neighborhood of Davis Islands.The remaining portions of this study outline the monitoring methodology and dataanalysis employed and the results of the program implementation and monitoring datathat were collected.


June 1996

3.0 METHODOLOGY

3.1 SELECTION OF STUDY HOMES

Davis Islands was the second neighborhood to participate in the City's Sensible

Sprinkling program. Davis Islands is a relatively affluent and established neighborhood

located in the City of Tampa, south of the downtown business district (Figure 3.1). Most

Davis Islands homes have large landscaped areas maintained by older in-ground

irrigation systems.

Two groups of Davis Islands households were selected for this study. The first group,

referred to as participant homes, was the primary focus of the study. These homes

were selected based on their voluntary participation in the irrigation system evaluation

component of the City's Sensible Sprinkling program. The second group, referred to as

control homes, was selected for two purposes: to determine whether participant

households' water use was representative of households with similar characteristics,and to ascertain whether any difference in water use realized by participant homes after

having had irrigation system evaluations completed were due to the evaluations and not

caused by external factors experienced by the entire community or neighborhood.

Attempts were made to select a representative control household for each participant

household. A control home was selected in the field if it met the following criteria:

* did not participate in the irrigation system evaluation component of the City's

Sensible Sprinkling program;

* was comparable in terms of house size, and type and area of landscaping as well as

level of upkeep;

* had an in-ground sprinkler systems connected to city water (households with in-

ground sprinkler systems and rust-stained sidewalks were assumed to be connected

to shallow irrigation wells and were not selected as controls);

* were in close proximity to the corresponding participant household.

3.2 IRRIGATION SYSTEM CHARACTERISTICS DATA COLLECTION ANDANALYSIS

Each participant household's landscape irrigation system evaluation report was

reviewed and results analyzed. Information extracted from each household's reportincluded the number of irrigation zones, the system's distribution uniformity (DU), thenumber and type of recommendations made, and estimates of landscape irrigation


June 1996

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A SCALE Figure:

= 1:125,000 DAVIS ISLAND NEIGHBORHOOD LOCATION MAP 3.1ASSOCIATES

water used assuming (1) current system condition and configuration, (2) all changes are

made regarding irrigation watering time changes, and (3) all changes are made

regarding the repair or modification of irrigation system's design and/or condition.

These estimates were then compared to actual pre- and post-evaluation irrigation water

use recorded for participant and control study groups.

3.3 HOUSEHOLD CHARACTERISTICS AND HOMEOWNER ACCEPTANCEDATA COLLECTION AND ANALYSIS

A post-irrigation system evaluation questionnaire was sent to Davis Islands participant

households to determine the effectiveness of the program and the quality of services

provided. In addition, the survey was used to obtain information on general household

and landscape irrigation system characteristics. Control households were sent a slightly

modified survey to gather baseline information on their in-ground landscape irrigation

systems and household characteristics. Questionnaires were administered to Davis

Islands participant and control households in December of 1994 and January of 1995,

respectively. Examples of the questionnaires are included in Appendix B, Exhibits B-1

and B-2. Responses to the questionnaire were input into a spreadsheet and summary

statistics were generated.

3.4 WATER USE DATA COLLECTION AND ANALYSIS

To assess any reductions in water use achieved by residents that had landscape

irrigation system evaluations completed, bi-monthly water use records for both

participant households and control households were obtained through the Tampa Water

Department. City of Tampa personnel downloaded water use/billing records between

March of 1993 and October of 1995 using addresses and account numbers identified for

participant households and addresses recorded for control homes.

Water use records for participant homes were imported into a computer spreadsheet

and converted from cubic feet into gallons. Household's bi-monthly water use records

were combined depending upon the type of meter installed. Households had one of

three types of meters installed:

* Households with a Type 1 meter had one main meter that recorded total water use

only (i.e., indoor, exterior, and lawn irrigation water use).

* Households with a Type 2 meter had two separate meters, one that recorded lawn

irrigation water use and one that recorded other water use. The majority of "other"

water use could be attributed to indoor use; however, outdoor use may have been

recorded on the other water use meter through exterior hose bibs. Water use


June 1996

recorded by the two separate meters were combined to calculate a household's totalwater use.

* Households with a Type 3 meter also had two separate meters; however, the first ormain meter recorded total water use while the second meter recorded lawn irrigationwater use. Lawn irrigation meters were connected after the main meter and lawn

irrigation water was subtracted from the total water use recorded to calculate otherwater use.

Participant household's average bi-monthly water usage were calculated for their pre-

and post-evaluation periods. Each household's pre-evaluation period consisted of 12

months of water use data immediately prior to the irrigation system evaluation date. The

pre-evaluation period ranged from March of 1993 to July of 1994 due to the different

irrigation system evaluation dates. To allow time for program participants to implementrecommended changes, each household's 12 month post-evaluation period began twomonths after receipt of their irrigation system evaluation report. The post-evaluationperiod ranged from June of 1994 through October of 1995. These events were usedbecause the actual dates households made recommended changes were not readily

available. Thus, each household had slightly different twelve month pre- and post-

evaluation periods. Control households were assigned pre- and post-evaluation periods

that corresponded to the participant they were selected to represent.

After pre- and post-evaluation periods were assigned, water use records were screenedto identify anomalous uses or other discrepancies. Based on the screening, severalparticipant and control households were excluded from the study because no total

and/or other water use was recorded for two or more months or because residents

moved during the study period and the new occupants may have had different water

consumption habits. Reasons for households to have no monthly water use recorded

could not be confirmed but may have been caused by seasonal occupation, metermalfunctions, meter replacements, new meter installations, or an inability to obtain areading due to various field conditions. Furthermore, both control and participanthousehold's average total water use during the pre- and post-evaluation periods werecalculated and plotted to identify homes with obvious extreme high or low water use.These were removed from the data set as outliers.

After the data were checked and cleaned, the pre- and post-evaluation total water useaverages for all participant and control households were compared to determine ifparticipant homes realized a statistically significant reduction in water use after theirirrigation systems were evaluated. The following comparisons were made usingStudent's t-Test analyses:

* Pre-evaluation total water use, participant vs. control households.


June 1996

* Post-evaluation total water use, participant vs. control households.

* Participant households' total water use, prevs. post-evaluation.

* Control households' total water use, prevs. post-evaluation.

Participant and control households with separate lawn irrigation meters were grouped.

The average pre- and post-evaluation total, irrigation, and other water use averages for

these households were compared to obtain a more accurate estimate of irrigation wateruse before and after evaluations were completed and to determine the percent of total

water used on landscapes. The following comparisons were made using Student's t-

Test analyses:

* Participant households with lawn meters, prevs. post-evaluation total water use.

* Participant households with lawn meters, prevs. post-evaluation irrigation wateruse.

* Participant households with lawn meters, prevs. post-evaluation other water use.

* Control households with lawn meters, prevs. post-evaluation total water use.

* Control households with lawn meters, prevs. post-evaluation irrigation water use.

* Control households with lawn meters, prevs. post-evaluation other water use.

* Pre-evaluation total water use, participant vs. control households with lawn meters.

* Post-evaluation total water use, participant vs. control households with lawn meters.

* Pre-evaluation irrigation water use, participant vs. control households with lawn

meters.

* Post-evaluation irrigation water use, participant vs. control households with lawn

meters.

* Difference between pre- and post-evaluation irrigation water use, participant vs.control households with lawn meters.

* Pre-evaluation other water use, participant vs. control households with lawn meters.

* Post-evaluation other water use, participant vs. control households with lawn meters.


June 1996

Finally, participant and control households were then divided into two groups; those withseparate lawn irrigation meters and those with only one meter that recorded total wateruse. The pre-evaluation and post-evaluation total water use averages for these groupswere compared to determine whether homes with separate lawn meters used more orless water than homes with only one meter, and to determine whether homes withseparate lawn meters experienced more or less of a reduction in total water use aftertheir irrigation systems were evaluated than did homes with only one meter. Thefollowing comparisons were made using Student's t-Test analyses:

* Participant households without lawn meters, prevs. post-evaluation total water use.

* Participant households' pre-evaluation total water use, with vs. without lawn meters.

* Participant households' post-evaluation total water use, with vs. without lawn meters.

* Control households without lawn meters, prevs. post-evaluation total water use.

* Control households' pre-evaluation total water use, with vs. without lawn meters.

* Control households' post-evaluation total water use, with vs. without lawn meters.

* Pre-evaluation total water use, participant vs. control households without lawnmeters.

* Post-evaluation total water use, participant vs. control households without lawnmeters.

* Difference between participant households' pre- and post-evaluation total water use,with vs. without lawn meters.

* Difference between control households' pre- and post-evaluation total water use,with vs. without lawn meters.

3.5 WEATHER DATA COLLECTION AND ANALYSIS

Rainfall data were used to assess seasonal and/or anomalous variations in weatherconditions during the pre- and post- evaluation periods. Data from the Howard F.Curren Advanced Wastewater Treatment (AWT) Plant were obtained from the City ofTampa for the study period. The plant's rain gauge was located approximately 1/4 mileeast of the Davis Islands Neighborhood. Average daily rainfall data were input into aspreadsheet designed to calculate and chart monthly averages and number of days withsignificant rainfall (defined as rainfall 2 0.5"). To determine whether there was a


June 1996

statistical difference in rainfall and the number of days with significant rainfall betweenthe pre- and post-evaluation periods, the following comparisons were made usingStudent's t-Test analyses:

* Daily rainfall (inches), cumulative prevs. cumulative post-evaluation periods.Because homes had slightly different pre- and post-evaluation periods, this

comparison was made using two representative 12 month evaluation periods (i.e.,

one each from the beginning and end of the cumulative evaluation periods).

* Number of days with significant rainfall, cumulative prevs. cumulative post-evaluation periods. Because homes had slightly different pre- and post-evaluation

periods, this comparison was made using two representative 12 month evaluation

periods (i.e., one each from the beginning and end of the cumulative evaluation

periods).

To determine whether there was a correlation between lawn irrigation water use and

rainfall, the total inches of rainfall for each of the bi-monthly pre- and post-evaluation

periods were statistically evaluated for correlation with the participant homes' and then

the control homes' average bi-monthly irrigation water use recorded for those periods.

Correlation coefficients were also calculated for the total number of days with significant

rainfall and participant homes' and then control homes' average bi-monthly irrigation

water use recorded for the pre-and post-evaluation periods.


June 1996

4.0 STUDY RESULTS

4.1 PROGRAM IMPLEMENTATION

Davis Islands irrigation system evaluations were conducted on 157 homes between April

and August of 1994. Results of the evaluations as well as general information on

irrigation systems and best management practices for lawns and landscapes were sent

to participant households within approximately a week of their system evaluation. In

addition, 27 participants requested rain shut-off devices. Appendix A, Table A-1 listsDavis Islands participant households, whether or not they received rain shut-off devices,

and the dates their irrigation systems were evaluated and results mailed.

4.2 IRRIGATION SYSTEM EVALUATIONS

Irrigation system evaluations were conducted through a series of field tests for

uniformity, adequacy, and efficiency. Results of these evaluations provided information

on participant households' irrigation systems and recommendations to remedy problems

and/or to alleviate unnecessary water usage. Table 4-1 provides a summary of report

recommendations as well as irrigation system characteristics derived from Davis Islands

households' evaluation reports.

The average household evaluated had 4.5 separate irrigation zones and an average

distribution uniformity (DU) of 53.4 percent. The DU refers to how evenly water is

applied by the sprinklers; when a perfectly uniform application is made, the DU is 100percent. In the field, a DU of 70 percent or higher is considered good. As distribution

uniformity decreases, the potential efficiency of the system also decreases because

some of the plants and turf will receive insufficient water and others will be over-

watered.

An average of 12.4 recommendations were made per household evaluated. The most

common recommendations were to: cap unnecessary spray-type sprinkler heads (e.g.,in areas where shrubs were established); change improper time settings on specificirrigation zones (most were receiving too much water, however, some received too

little); repair leaking sprinkler heads and/or pipes; change incorrect sprinkler head sizes

causing unmatched rates; prune shrub or turf interference around sprinkler heads;

change inappropriate ground cover, and; fix sprinkler head angles or directions.


June 1996

TABLE 4-1PARTICIPANT HOUSEHOLDS' SPRINKLER SYSTEM CHARACTERISTICS ANDIOR

PROBLEMS IDENTIFIED DURING IRRIGATION SYSTEM EVALUATIONS. 1

Number of Recommendations

HomesCharacteristic and/or Problem Identified2 Evaluated Avg. Min. Max. Std. Dev.

Number of irrigation system zones 157 4.5 1 10 1.6Distribution uniformity 124 53.4 15 78 11.4

Leaking sprinkler heads/pipes 157 1.7 0 7 1.6Incorrect sprinkler head-size/unmatched rates 157 1.6 0 15 2.2Turf & plant beds on same zone 157 0.2 0 4 0.5Mixed spray & rotor heads in same zone 157 0.2 0 4 0.5Need drip irrigation in plant bed 157 0.1 0 3 0.4

Unnecessary sprayheads need to be capped 157 2.9 0 18 3.5

Improper sprinkler head angle/direction 157 0.6 0 7 1.1

Improper sprinkler head spacing 157 0.3 0 5 0.7

Controller not functioning or used correctly 157 0.5 0 4 0.8

Shrub/turf interferes with sprinkler heads 157 1.3 0 6 1.3Ground cover inappropriate 157 0.8 0 5 1.1

System pressure 157 0.0 0 1 0.1

Zones with improper time settings 1443 2.5 0 7 1.7

Total Number of Recommendations 157 12.4 1 34 6.6

SBased on Appendix A, Table A-2.2 All evaluation reports included general recommendations (e.g., landscape with natural shrubs and

plants); however, this table is a summary of specific recommendations made for households' landscapes.3 The number of homes is less because of manual systems or no water use data provided by evaluator.

Less frequent recommendations made included: installing separate zones for turf and

separate zones for plant beds; replacing spray- or rotor-type sprinkler heads when found

in same zone (areas with sprayheads become over-watered while rotor areas receive

the correct application); installing drip irrigation in plant beds; moving sprinkler heads toattain proper spacing, and; repairing or re-programming controllers that are notfunctioning properly. System pressure was found to represent a problem at very fewhouseholds.

Irrigation water use estimates included in the evaluation reports were derived usingvarious manufacturers' recommended flow rates for sprinkler heads and in some casesa "catch-can" test. Table 4-2 provides a summary of irrigation water use estimatesderived from the evaluation reports. Only 144 of the 157 households evaluated wereprovided with irrigation water use estimates. Assuming households irrigated their lawns


June 1996

two times per week (the maximum allowed by city ordinance), the average householdwas estimated to have been using 580 gallons of water per house per day (g/h/d) to

irrigate their landscapes. If participants made all the irrigation watering time changesrecommended, it was estimated that the average household would experience a 135

g/h/d (23 percent) reduction in irrigation water use. If participants made all the changes

recommended to repair or modify their irrigation system's design and/or condition, it was

estimated that the average household would experience a 50 g/h/d (9 percent) reduction

in irrigation water use. If all the recommended irrigation watering time and system

design and/or condition changes were made, the average household would experience

a 185 g/h/d (32 percent) reduction in irrigation water use. These estimates are

compared to actual pre- and post-evaluation irrigation water use recorded for participant

households in the section on "Water Use Characteristics".

TABLE 4-2PARTICIPANT HOUSEHOLDS' IRRIGATION WATER USE ESTIMATES

DERIVED FROM SYSTEM EVALUATIONS. 1

Estimated Irrigation Water Use (g/h/d) 2

Value After Changes Made Difference (Existing - After)

Existing With Time With Other With All With Time With Other With All

Changes Changes Changes Changes Changes Changes

No. Homes 144 144 144 144 144 144 144

Mean 580 445 530 395 135 50 185

Min. 135 86 42 86 -158 -118 -138Max. 1807 1369 1768 912 904 529 970St. Dev. 321.1 220.9 294.8 186.5 162.5 75.9 185.3

1 Based on Appendix A, Table A-3.2 Estimates based on 2 watering cycles per week (year round).

4.3 HOUSEHOLD CHARACTERISTICS

Information on participant and control household characteristics were obtained from the

post-evaluation questionnaires. The questionnaire response rate was fair; 77 of the 157participant households (49 percent) and 57 of the 150 control households (38 percent)

returned surveys. Appendix B, Tables B-la and B-2 include tabulated summaries of

participant and control households' responses, respectively, to questions that pertainedto household characteristics.


June 1996

Davis Islands control and participant households had very similar characteristics assummarized in Table 4-3. Both groups of homes were generally older constructed inthe mid to late 1950s. Based on the average number of showers and toilets reported,both control and participant homes typically had at least two full and one half bath.Every household surveyed reportedly had a clothes washer and the almost everyhousehold had a dishwasher and garbage disposal installed. Approximately half of thehomes reportedly had a pool and/or Jacuzzi, while very few reported having a watersoftener (i.e., between 7 and 10 percent).

Davis Islands participant households average 2.6 persons per house with slightly morepersons (2.9 persons/house) in control homes. On the average, participants had lived intheir homes for approximately 13 years and were mainly distributed between four agegroups (i.e., approximately 73 percent in the 41 to 60 age group, 58 percent in the 19 to40 age group, 55 percent 61+ age group, and 48 percent in the 3-12 year age group).The average control homeowner had lived in their homes for approximately 11 yearsand were primarily distributed between four age groups (i.e., approximately 87 percentin the 41 to 60 age group, 82 percent in the 19 to 40 age group, 51 percent 61+ age

group, and 36 percent in the 3-12 year age group). Davis Islands participanthouseholds estimated average annual household income of $70,636 was slightly more

than control households average of $67,353; however, these average annual incomesare most likely underestimated because over half of those responding to the questionselected the greater than $85,000 income bracket.

Five of the participant survey questions (numbers 4d, 11, 12, 13, and 14) and five of the

control household survey questions (numbers 3, 5, 6, 7, and 10) were designed toobtain information on their landscape irrigation system installations. Figures 4-1 through4-5 graphically depict participant and control households' responses to these questions.The majority of participant and control households (responding to question numbers 12and 5, respectively) indicated that their irrigation systems were installed in the 1980sand 1990s; the oldest system was installed in 1958 and the newest in 1995 (Figure 4-1). The majority of households (61 percent of controls and 74 percent of participants,

responding to question numbers 6 and 13, respectively) indicated that their irrigation

systems were installed by a contractor (Figure 4-2).


June 1996

TABLE 4-3STUDY HOUSEHOLDS' CHARACTERISTICS. 1

Participant Household Response Control Household ResponseCharacteristic % %

Resp. Avg. Min. Max. Resp. Avg. Min. Max.

Questionnaire 2 49% NA NA NA 38% NA NA NA

Year Home Built3 97% 1957 1925 1993 93% 1956 1925 1994

No. of Fixtures3 97% NA NA NA 89% NA NA NADishwasher4 1.0 0 1 0.9 0 1G. Disposal 4 0.8 0 2 0.8 0 2Clotheswasher 4 1.0 1 1 1.0 1 1Water Softener4 0.1 0 1 0.1 0 1Pool / Jacuzzi4 0.6 0 2 0.5 0 1Shower/Tub 4 2.5 1 7 2.6 1 6Toilet4 2.9 1 6 3.0 1 6

Pers./Household 3 96% 2.6 1 5 98% 2.9 1 6

Occup. Length 3 97% 13 yrs 0.6 yrs 56 yrs 95% 11 yrs 0.2 yrs 54 yrs

Age Groups 3 92% NA NA NA 96% NA NA NA< 2 Years 5 0.1 0 2 0.2 0 23-12 Years5 0.5 0 3 0.4 0 313-18 Years 5 0.2 0 3 0.2 0 219-40 Years 5 0.6 0 2 0.8 0 241-60 Years 5 0.7 0 2 0.9 0 2> 61 Years 5 0.5 0 2 0.5 0 2

Annual Income3'6 71% $70,636 $5,000 $85,000+ 86% $67,353 $5,000 $85,000+

1 Based on Appendix B, Tables B-la and B-2.2 Percent of all surveyed households that answered the questionnaire (i.e., questionnaire response rate).3 Percent of survey response households that answered the question (i.e., question response rate).4 Averages based on 75 participant and 51 control household' survey responses.5 Averages based on the reported number of occupants in the households responding to this question (i.e., 187

participants and 160 controls).6 Average annual income derived from the sum of the number of households in each income group multiplied by

the median of that income range divided by the total number of households. For example, (0 x $5,000) + (2 x$10,000) + ... (51 x $85,000) = $3,300,297 /49 controls = $67,353. This average annual income is most likelyunderestimated because over half of the respondents selected the greater than $85,000 income bracket.

NA - Not Applicable


June 1996

"When was your in-ground landscapeirrigation system installed?"

60

* 50-

o 40.- Participants

S30-. Controls

* 20.

a. 10

0 -• ..--. i + I --I

1950s 1960s 1970s 1980s 1990s

FIGURE 4-1 DAVIS ISLANDS STUDY HOUSEHOLDS' LANDSCAPE IRRIGATIONSYSTEM INSTALLATION DATES (based on survey responses).

"Was your landscape irrigation system installed byyourself or a contractor?"

80

70 -

o6 0 - Participants

S50 O ControlsS40-

3 30

2 20a- 10-

0Self Contractor Unknown

FIGURE 4-2 DAVIS ISLANDS STUDY HOUSEHOLDS' LANDSCAPE IRRIGATIONSYSTEMS INSTALLATION ARRANGEMENTS (based on surveyresponses).


June 1996

Control and participant households (responding to question numbers 3 and 4d,respectively) indicated that they obtained information on how long to run the timer fortheir automatic irrigation system from either an irrigation or landscape company or thatthey set the timer themselves. Several respondents (14 percent of participants and 6percent of controls) stated that their timer was already set when they purchased thehouse (Figure 4-3). When responding to question number 14, more participantsindicated that they hired a company to maintain their landscapes (66 percent) ratherthan maintain themselves (44 percent) while control households (responding to questionnumber 10) were almost evenly split between having their yards maintained by acompany and maintaining their yards themselves (Figure 4-4). Approximately 49percent of controls and 68 percent of participants (responding to question numbers 11and 7, respectively) indicated that they had separate lawn meters for their irrigationsystems (Figure 4-5).

"Where did you get information on how long to run thetimer for your irrigation system?"

4035 - SParticipants25 O Controls

a 20 -c 15 -

FIGURE 4-3 WHERE DAVIS ISLANDS STUDY HOUSEHOLDS OBTAINEDINFORMATION ON HOW LONG TO RUN THEIR IRRIGATIONSYSTEM TIMERS (based on survey responses).


June 1996

"Do you maintain your landscape or hirea landscape company?"

70

, 6050 m Participants50 nOControls

1 40S30

20

M 10

Self Landscape Co.

FIGURE 4-4 WHO MAINTAINED DAVIS ISLANDS STUDY HOUSEHOLDS'LANDSCAPES (based on survey responses).

"Do you have a seperate lawn meter foryour irrigation system?"

70

60SParticipants

050. O0 ControlsS40-

30

p 20

I 10

Yes No Unknown

FIGURE 4-5 DAVIS ISLANDS STUDY HOUSEHOLDS WITH OR WITHOUTSEPARATE LAWN IRRIGATION METERS (based on surveyresponses).


June 1996

4.4 HOMEOWNER ACCEPTANCE

Davis Islands participants' implementation of the changes recommended in theirirrigation evaluations and their satisfaction with the program were assessed byevaluating responses to homeowner questionnaires. Appendix B, Table B-lb includestabulated summaries of participant households' responses to questions that pertained toimplementation of recommendations and their satisfaction with the program.

Program Satisfaction: Three survey questions (numbers 1, 2, and 3) askedparticipants to rate their satisfaction, on a scale of one (very dissatisfied) to ten (verysatisfied), with various aspects of the irrigation evaluation program (Table 4-4).Weighted average satisfaction ratings were derived for each program characteristic bysumming the number of responses to each rating multiplied by the rating and dividing bythe total number of responses. Participants responding to question number 1 weregenerally satisfied with the overall program as evident by the weighted average rating of8.8. Program characteristics such as how understandable the report was (questionnumber 2) and how realistic it was to implement the changes (question number 3) alsoreceived positive weighted average satisfaction ratings of 8.8 and 8.2, respectively.

TABLE 4-4DAVIS ISLANDS PARTICIPANTS' OVERALL SATISFACTION WITH THE

IRRIGATION SYSTEM EVALUATION PROGRAM. 1

Number of ResponsesProgram Weighted

Characteristics Overall Satisfaction Ratings Average 2

(no. responses) 1 2 3 4 5 6 7 8 9 10Very Dissatisfied - -Very Satisfied

Overall Program (75) 0 0 1 1 2 3 6 10 20 32 8.8Understandable (76) 0 0 1 1 3 1 6 13 19 32 8.8Realistic (73) 0 0 1 3 4 3 11 18 9 24 8.2

Based on Appendix B, Table B-lb.2 The weighted average for the overall program question was calculated from (((0x1)+(0x2)+ ..... (32x10)) /75) = 8.8


June 1996

Changes Implemented: Four survey questions (numbers 4, 5, 6, and 7) weredesigned to obtain information on whether Davis Islands participants made changes totheir irrigation systems as recommended. Approximately 78 percent of the 76households responding to question number 4a indicated that they implemented some ofthe changes recommended with regard to irrigation watering times. Sixty-seven percentof the 52 households who responded to question number 4b indicated that they madebetween 50 percent and 100 percent of all the irrigation watering time changesrecommended (Figure 4-6).

Q#4b: Indicate the percent of recommendedirrigation watering time changes that youim plem ented.

100

OS80

. 20 o

0 60

' 40 31W 27

0 2 --M----U-0% 25% 50% 75% 100%

FIGURE 4-6 PERCENT OF IRRIGATION WATERING TIME CHANGES THAT DAVISISLANDS PARTICIPANTS REPORTEDLY MADE.

Approximately 15 participants responded to survey question number 4c which askedparticipants why they did not implement the irrigation watering time changesrecommended. Approximately 40 percent of participants responding to the questionstated that they were planning to make the changes, but haven't had the time. Threeother reasons for not making the changes selected most often by respondents includedthat they did not know who to call to make the changes (20 percent); did not know howto adjust the time clock (13 percent); or the recommendations were too technical (13percent). Figure 4-7 graphically displays responses to question number 4c. Only fourparticipants responded to the open comment question number 4c(Hb) which asked whatincentive would cause them to make watering time changes recommended. Responsesto this question generally included recommendations to make follow-up visits or havesomeone make changes.


June 1996

Q#4c: If irrigation watering time changes were notmade to your sprinkler system, which of thefollowing describes why?

100 -

e 80 -iUo

- 60

40

20. 20J- 13 13

0 o

Don't Too No time Don't Don't Advised Otherknow tech. know agree not tohow who

FIGURE 4-7 WHY DAVIS ISLANDS PARTICIPANTS REPORTEDLY DID NOTMAKE IRRIGATION WATERING TIME CHANGES.

Rain Shut-Off Devices: Question number 5 asked participants whether they installed

the rain shut-off device that was offered. Of the 74 households responding to the

question, 32 percent stated that they had installed the device while 50 percent

reportedly did not. Reasons offered as to why they did not install the device included:

* Sixteen respondents indicated that they had not received or been offered a device.

* Eleven respondents said they had manual systems or turned their system off when it

rained.

* Six respondents indicated the device was too complicated or needed an electrician.

* Five respondents indicated that they already had a rain shut-off device.

* Two respondents indicated they were planning to install the device eventually.

Landscaping: Approximately 24 percent of the 74 households responding to question

number 6 indicated that they made some changes recommended with regard to

replacing their existing landscape/plant stock while 42 percent indicated that they had

not. Remaining respondents indicated that they did not know or that no such changes

were recommended.


June 1996

Irrigation System Repairs: Of the 75 participants who responded to question number7a, approximately 81 percent indicated that they implemented some of the changesrecommended to repair or modify their particular irrigation system's design and/orcondition; 12 percent stated that they had not made any of the changes and 7 percentsaid that none were recommended. Question number 7b asked participants toapproximate the percent of changes they made to repair or modify their particularirrigation system's design and/or condition. Approximately 76 percent of the 51households who responded to question number 7b reportedly made between 50 percentand 100 percent of all the changes recommended (Figure 4-8). Of those participantswho indicated that they implemented some of these changes, 47 percent stated thatthey made the changes themselves while 54 percent hired a contractor (questionnumber 7c). Costs to implement changes reportedly averaged $95 and ranged from $0to $900 (question number 7e).

Q#7b: Indicate the percent of recommendedirrigation system changes that you implemented.

100

o 80

0o

40S 29 29

0% 25% 50% 75% 100%

FIGURE 4-8 PERCENT OF CHANGES DAVIS ISLANDS PARTICIPANTSREPORTEDLY MADE TO REPAIR OR MODIFY THEIR IRRIGATIONSYSTEMS' DESIGN AND/OR CONDITION.

Approximately 20 participants responded to survey question number 7f which asked whychanges recommended to repair or modify their particular irrigation system's designand/or condition were not made. Approximately 40 percent of participants responding tothe question stated that they were planning to make the changes, but haven't had thetime. Three other common reasons for not making changes included that they did notknow who to call to make the changes (25 percent); the changes recommended weretoo expensive (15 percent); or the recommendations were too technical (15 percent).Figure 4-9 graphically displays responses to question number 7f.


June 1996

Q#7f: If changes were not made to your sprinklersystem, which of the following describes why?

100

e 80 -Un

08L 6 0

S 40

0. 20 15 15

0 0 0

Too Too No time Don't Don't Advised Otherexpens. tech. know agree not to

who

FIGURE 4-9 WHY DAVIS ISLANDS PARTICIPANTS REPORTEDLY DID NOTREPAIR OR MODIFY THEIR IRRIGATION SYSTEM'S DESIGNANDIOR CONDITION.

Question number 7f asked participants to elaborate on what incentive would cause them

to make the changes recommended to repair or modify their particular irrigation

system's design and/or condition. Approximately 50 percent of the 20 households

responding to this question indicated that a rebate should be provided for the irrigation

system components; the average suggested rebate was $78 and ranged from $50 and

$200. Other suggestions selected included: providing a list of contractors to do the work

(25 percent); conducting a follow up visit to review recommendations (20 percent);

providing a rebate for the labor to have a contractor complete repairs (20 percent); and

providing a list of stores that carry parts (15 percent).

Approximately 26 percent of the 68 persons responding to question number 9 indicatedthat they would like a follow up visit to review the recommendations made in the reportand/or the changes they made; the remaining 74 percent of respondents indicated thatthey would not like a follow up visit.

Landscape Appearance: Of the 65 participants responding to question number 8,approximately 71 percent indicated their landscapes looked the same after changeswere made compared to before; none responded that their landscapes were worse and29 percent said they were better (Figure 4-10).


June 1996

Q#8: Compared to the conditions prior to making thechanges, the landscape looks?

100

8071

00. 60

40 -29

2020

0

Better Same Worse

FIGURE 4-10 DAVIS ISLANDS PARTICIPANTS' OPINION OF THEIR LANDSCAPES'CONDITION AFTER MAKING CHANGES TO THEIR IRRIGATIONSYSTEMS.

Program Improvements Suggested: Question number 10 asked participants tocomment on ways to improve the program. Suggestions provided are summarized asfollows:

* Ten responses specifically stated that no changes were recommended.

* Seven responses were negative (e.g., better advertising needed, rain shut-off devicewould not work).

* Four responses were positive (e.g., fantastic job, wonderful service).

* Four responses recommended follow-up visits and/or actions to be taken (e.g., have

someone do work, xeriscape all properties owned by city).

4.5 WATER USE CHARACTERISTICS

Pre- and post-evaluation water use data was available for 114 of the 157 participant

households and 113 of the 157 control homes selected. Not all Davis Islands studyhomes were included in the water use evaluation because some had no water use


June 1996

recorded for one or several months, residents moved in/out during the study period, or

they voluntarily removed themselves from the program. After culling these initial homes

from the data set, each of the remaining study households' average total water use was

plotted for the pre- and post-evaluation periods to identify outliers that exhibited extreme

high or low water usage (Appendix C, Figures C-la and C-2a, and Figures C-lb and C-

2b, respectively). None of the 114 participants and only one of the 113 controls were

removed as outliers. Average bi-monthly water use data for each participant household

during the pre- and post-evaluation monitoring periods are included in Appendix C,Tables C-la and C-2a, respectively. Control households' average bi-monthly water use

data for pre- and post-evaluation monitoring periods are included in Appendix C, Tables

C-lb and C-2b, respectively.

A summary of participant and control households' average total water use for the pre-

and post-evaluation periods is included in Table 4-5. Davis Islands participant

households' total water use averaged 673 gallons per house per day (g/h/d) during their

pre-evaluation period and 490 g/h/d during their post-evaluation period. The 183 g/h/d

difference between participants' pre- and post-evaluation total water use averages

represented a statistically significant reduction (Appendix C, Exhibit C-2a). Of the 114

participant households, 96 homes (84 percent) averaged less water use after irrigation

evaluations were completed while 18 of participant households actually showed an

average increase in water use after irrigation evaluations were completed (Appendix C,Figure C-3a and Table C-7A).

TABLE 4-5TOTAL WATER USE RECORDED FOR ALL STUDY HOUSEHOLDS. 1

Total Water Use (g/h/d)

Study Group Pre-Evaluation Post-Evaluation Diff. Pre - Post

(no. homes) St. St. g/hld %

Avg. Min. Max. Dev. Avg. Min. Max. Dev. Avg. Min. Max.

Participants (114) 6732 74 1978 372 4902 70 1533 259 1833 4 445 27

Controls (112) 6102 66. 2049 390 5052 49 1555 304 1053 17 494 17

Based on Appendix C, Tables C-la, C-2a, C-lb, and C-2b.Participant households' total water use averages during the pre and post periods were not significantlydifferent from those experienced by controls (Appendix C , Exhibits C-la and C-lb).Post total water use was significantly less than the pre (Appendix C, Exhibits C-2a and C2-b).


June 1996

Davis Islands control households' total water use averaged 610 g/h/d during their pre-evaluation period and 505 g/h/d during their post-evaluation period. The 105 g/h/ddifference between controls' pre- and post-evaluation total water use averages alsorepresented a statistically significant reduction (Appendix C, Exhibit C-2b). Of the 112control households, 80 homes (71 percent) averaged less water use during the pre-evaluation period while 32 of the controls experienced an average increase in water useduring the post-evaluation period (Appendix C, Figure C-3b and Table C-7B).

In summary, the data show that both participant and control households' total water useaverages were significantly less during the post-evaluation period than averagesrecorded during the pre-evaluation period. There was no significant difference betweenparticipant and control households' post-evaluation total water use averages.

To obtain a more accurate estimate of reductions in water use realized by homeownerswho implemented irrigation system changes, and to determine the percent of total waterthat was used to irrigate landscapes, Davis Islands study households with separate lawnirrigation meters were grouped and their average pre- and post-evaluation water useswere compared. Separate, previously installed, lawn irrigation meters were at 72 of the

114 participant households and 64 of the 112 control households. Two types of water

use, lawn irrigation and "other" water use, could be calculated for these households.The majority of "other" water use could be attributed to indoor use; however, outdooruse may have been recorded on the other water use meter through exterior hose bibs.Tables 4-6, 4-7, and 4-8 summarize the average total, lawn irrigation, and other wateruse values from pre- and post-evaluation periods, respectively, for Davis Islands study

homes with separate lawn meters.

TABLE 4-6TOTAL WATER USE RECORDED FOR STUDY HOUSEHOLDS

WITH SEPARATE LAWN METERS. 1



(no. homes) St. St. g/h/d %


Participants (72) 7902 238 1978 384 5622 150 1533 263 2283 88 445 29

Controls (64) 7662 135 2049 396 6082 105 1555 306 1583 30 494 21

Based on Appendix C, Tables C-3a, C-3b, C-4a, and C-4b.2 Participant households' total water use averages during the pre and post periods were not significantlydifferent from those experienced by controls (Appendix C , Exhibits C-3a and C-3b).

3 Post total water use was significantly less than the pre (Appendix C, Exhibits C-4a and C4-b).


June 1996

TABLE 4-7IRRIGATION WATER USE RECORDED FOR STUDY HOUSEHOLDS


Irrigation Water Use (g/h/d)


(no. homes) St. St. g/h/d %


Participants (72) 5702 72 1601 351 3542 25 1271 226 2163'4 47 330 38

Controls (64) 5062 27 1668 318 3482 18 1086 243 1583'4 9 582 31

Based on Appendix C, Tables C-3a, C-3b, C-4a, and C-4b.2 Participant households' irrigation water use averages during the pre and post periods were not

significantly different from those experienced by controls (Appendix C , Exhibits C-5a and C-5b).Post irrigation water use was significantly less than the pre (Appendix C, Exhibits C-6a and C-6b).

4 The post irrigation water reductions experienced by participant households were not significantly differentfrom those experienced by controls (Appendix C , Exhibit C-7).

TABLE 4-8OTHER WATER USE RECORDED FOR STUDY HOUSEHOLDS


Other Water Use (g/h/d)


(no. homes) St. St. g/hld %


Participants (72) 2202 61 701 104 2082 53 424 92 123 8 277 5

Controls (64) 2602 64 857 156 2602 51 641 123 03 13 216 0

Based on Appendix C, Tables C-3a, C-3b, C-4a, and C-4b.2 Participant households' other water use averages during the pre and post periods were significantly less

than those experienced by controls (Appendix C , Exhibits C-8a and C-8b).3 Post other water use was not significantly different than the pre (Appendix C, Exhibits C-9a and C-9b).

Davis Islands participant households with separate lawn meters used a total of 790

g/h/d during the pre-evaluation study period; approximately 570 g/h/d of lawn irrigationwater and 220 g/h/d of other water. During the post-evaluation study period, thesehouseholds used a total of 562 g/h/d; approximately 354 g/h/d of irrigation water and208 g/h/d of other water. Statistically significant reductions in average total water use(228 g/h/d or 29 percent) and average lawn irrigation water use (216 g/h/d or 38percent) were experienced by participant households (Appendix C, Exhibits C-4a and C-


June 1996

6a, respectively). The 12 g/h/d difference between pre- and post-evaluation other wateruse averages was not statistically significant (Appendix C , Exhibit C-9a). Theconsistency between pre- and post usage for the other water use category suggests thereductions were from changes to the lawn irrigation water use.

Irrigation water use estimates derived from the evaluations were fairly accuratecompared to the metered pre- and post-irrigation water use recorded for participanthouseholds. The average participant household was estimated from the sensiblesprinkling evaluations to have been using 580 g/h/d to irrigate their landscapes .compared to the metered 570 g/h/d during the pre-evaluation period. If all irrigationwatering time and system design and/or condition changes were made, it was estimatedthat the average household would use 185 g/h/d (32 percent) less irrigation water.Comparatively, the average reduction in irrigation water use recorded for participanthomes during the post-evaluation period was 216 g/h/d or 38 percent.

Davis Islands control households with separate lawn meters used a total of 766 g/h/dduring the pre-evaluation study period; approximately 506 g/h/d of lawn irrigation waterand 260 g/h/d of other water. During the post-evaluation study period, thesehouseholds used a total of 608 g/h/d; approximately 348 g/h/d of irrigation water and260 g/h/d of other water. Statistically significant reductions in average total water use(158 g/h/d or 21 percent) and average lawn irrigation water use (158 g/h/d or 31percent) were experienced by control households (Appendix C, Exhibits C-4b and C-6b,respectively). The 0 g/h/d difference between pre- and post-evaluation other water useaverages was not statistically significant (Appendix C , Exhibit C-9b). The consistencybetween pre- and post usage for the other water use category suggests the reductionswere from changes to the lawn irrigation water use.

In summary, the data can not be used to conclude that the reduction in irrigation wateruse by participant homes during the post-evaluation period was due to the irrigationevaluation audits. Participant households' irrigation water use averages during the pre-and post-evaluation periods were not significantly different from those experienced bycontrols (Appendix C, Exhibits C-5a and C-5b). Control households with separate lawnmeters used significantly more other water than the equivalent participant householdgroup during the pre- and post-evaluation period (Appendix C, Exhibits C-8a and C-8b);but the control group did average slightly more persons per household than theparticipants. Reductions in irrigation water use experienced by participant and controlhomes with separate lawn irrigation meters were both statistically significant (AppendixC, Exhibits C-6a and C-6b). Although participants averaged 58 g/h/d more of areduction in irrigation water use than controls, the difference was not statisticallysignificant (Appendix C , Exhibit C-7).

This study showed that participant homes with in-ground sprinkler systems used anaverage of 72 percent of their total water use for irrigating their landscapes during the


June 1996

pre-evaluation period and 63 percent during the post-evaluation period. Control homeswith in-ground sprinkler systems used an average of 66 percent of their total water usefor irrigating their landscapes during the pre-evaluation period and 57 percent during thepost-evaluation period.

The remaining 42 participant homes and 48 control homes with only one total water usemeter were grouped and their average pre- and post-evaluation total water use

averages were compared to households with separate irrigation meters (Table 4-9). Itwas anticipated that homes with separate lawn meters would use more water because

customers with lawn meters did not pay sewer charges for irrigation water used.

TABLE 4-9TOTAL WATER USE RECORDED FOR STUDY HOUSEHOLDS WITH AND

WITHOUT SEPARATE LAWN METERS. 1


Study Group Homes With Lawn Meters Homes Without Lawn Meters

No. Pre Post Diff. No. Pre Post Diff.Homes Avg. Avg. Pre-Post Homes Avg. Avg. Pre-Post

Participants 72 7902.3 5622,3 2284.6 42 4732,3 3662'3 1074'6

Controls 64 7662'3 6082,3 1584.6 48 4032.3 3682.3 355'6

Based on Appendix C, Appendix C, Tables C-3a, C-3b, C-4a, C-4b, C-5a, C-5b, C-6a, and C-6b.2 Participant households' total water use averages during the pre and post periods were not significantly

different from those experienced by controls (Appendix C , Exhibits C-3a, C-3b, C-10a and C-10b).3 Pre and post total water use averages of households with lawn meters were significantly more than those

experienced by households without lawn meters (Appendix C , Exhibits C-1 a, C-11b, C-12a and C-12b).4Post total water use was significantly less than the pre (Appendix C, Exhibits C-4a, C4-b, and C-13a).

s Post total water use was not significantly different than the pre (Appendix C, Exhibit C-13b).6 The post total water use reductions experienced by households with lawn meters were significantly more

than those experienced by households without lawn meters (Appendix C , Exhibits C-14a and C-14b).

During the pre-evaluation monitoring period, participant households with separate lawnirrigation meters averaged 790 g/h/d total water use compared to an average 473 g/h/dfor households that had only one meter. It is possible that participant homes with

separate lawn meters had more landscaped areas that required irrigation; however, the317 g/h/d (40 percent) difference in pre-evaluation total water use averages of homeswith and homes without a separate lawn meter, most likely reflects the fact thatcustomers with separate lawn meters did not pay sewer charges for irrigation water andtherefore probably used irrigation water more indiscriminately. Having to pay sewercharges on lawn irrigation water may create an incentive to conserve water. These


June 1996

explanations are supported by the difference between pre- and post-evaluation waterusage. Households with separate lawn meters had experienced an average 29 percent(228 g/h/d) reduction in total water use compared to a 23 percent (107 g/h/d) reductionexperienced by homes without lawn meters installed.

Reductions in total water use experienced by participant homes with and without

separate lawn irrigation meters were both statistically significant; however, those withlawn meters experienced a significantly greater total water use reduction than homeswithout lawn meters experienced.

During the pre-evaluation monitoring period, control households with separate lawn

irrigation meters averaged 766 g/h/d total water use compared to an average 403 g/h/d

for households that had only one meter. Similar to participant homes, control

households with separate lawn irrigation meters used significantly more water during the

pre-evaluation period than controls without lawn meters experienced. Furthermore,control households with separate lawn meters experienced an average 21 percent (158

g/h/d) reduction in total water use compared to a 9 percent (35 g/h/d) reduction

experienced by homes with one meter installed.

Reductions in total water use experienced by control homes with separate lawn irrigation

meters were statistically significant; however, the 9 percent reduction experienced by

controls households without lawn meters was not statistically significant. As was the

case with participant households, control homes with lawn meters experienced a

significantly greater total water use reduction than homes without lawn meters

experienced.

4.6 WEATHER CONDITIONS

Rainfall data were used to compare weather conditions and assess whether the pre-

evaluation period (i.e., between March of 1993 and July of 1994) differed significantly

from the post-evaluation period (i.e., between June of 1994 and October of 1995).

Average daily rainfall data were obtained from the weather station maintained by the

City of Tampa at the Howard F. Curren Advanced Wastewater Treatment (AWT) Plant

(Appendix D, Table D-1). The station's rain gauge was located approximately 1/2 to 1/4

mile east of the Davis Islands Neighborhood.

Rainfall averaged 0.11 inches per day during the pre-evaluation period and 0.16 inches

per day during the post-evaluation period (Figures 4-11 and 4-12). The average daily

rainfall recorded over the cumulative pre-evaluation (518 days) was significantly less

than that recorded during the cumulative post-evaluation (518 day) period (Appendix D,Exhibit D-la).


June 1996

The number of days with significant rainfall (defined as rainfall 2 0.5") during the pre-

and post-evaluation periods were also compared to control for months with storm eventsthat contributed to high rainfall over a short period of time. An average of 2 days permonth with significant rainfall was recorded during the pre-evaluation period comparedto an average of 3 days per month recorded during the post-evaluation period (Figures4-13 and 4-14). Based on results of a Student's t-Test, there was no significantdifference between the mean number of days with significant rainfall recorded during thecumulative pre-evaluation period compared to the cumulative post-evaluation period

(Appendix D, Exhibit D-lb).

The pre- and post-evaluation periods were 17 months long each. Six months of the pre-evaluation period and five months of the post-evaluation period were considered to be

the dry season (i.e., November through March). Respectively; the pre-evaluation period

had eleven months and post-evaluation period had twelve months considered to be the

rainy season (i.e., April through October). Because households had different twelve

month pre- and post-evaluation periods, an assessment was made to evaluate whetherthe rainfall was statistically different for individual household's pre-and post-evaluationperiods. Two representative 12 month evaluation periods were selected from the study

group; household number 1 was selected as representative of the earliest and

household number 160 was selected as representative of the latest cumulative

evaluation periods.

Student's t-Test analyses were used to compare rainfall events for these two

households' pre- and post-evaluation periods. Household number 1's post-evaluationperiod (i.e., July 1994 - June 1995) had significantly more total inches of rainfall than its

pre-evaluation period (i.e., March 1993 - February 1994); however, there was no

difference between the number of days with significant rainfall events during those pre-

and post-evaluation periods (Appendix D, Exhibits D-2a and D-2b). Conversely, there

was no difference in total rainfall or the number of days with significant rainfall events

during household number 160's pre- and post-evaluation periods which extended from

August 1993 - July 1994 and October 1994 - September 1995, respectively (AppendixD, Exhibits D-3a and D-3b).


June 1996

PRE-EVALUATION AVERAGE DAILY RAINFALL

0.40-

0.35

> 0.30

0.25 -

. 0.20

0.00 t -0) 0m 0) Y) 0) 0) 0C 0) 0) 0) 00 0) 0' 04 0 0) 0"0) 0. 1) 0 0) C) 0 . A mI I s, I - s & . 1 6 ,- . ' .^ , , --

2 < 2 -- 3 )(< t) 0 Z 0 -3 LL < -5

FIGURE 4-11 AVERAGE DAILY RAINFALL RECORDED DURING DAVIS ISLANDS

PRE-EVALUATION PERIOD.

POST-EVALUATION AVERAGE DAILY RAINFALL

0.40

0.35

M 0.30-

. 0.25a)C. 0.20- ean) 0.15 -

0.100.050.00 --

'IT 'T) 'IT 1,^ 'IT 'T to L An to to to LA to LO LAS 0 ) 0) 0 0 a 0 0) 0) In 0) 0) 0a 0 0 0)

- 3 < n -1

FIGURE 4-12 AVERAGE DAILY RAINFALL RECORDED DURING DAVIS ISLANDS

POST-EVALUATION PERIOD.


June 1996

PRE-EVALUATION SIGNIFICANT RAINFALL DAYS (>0.49")

7

6 - -

o 463

6 MeanS2

0 -

a) 0) C) 0) 0) 0) 0) 3) 0) 0) 0) 0) 0) 0) 0) 0) a)

-U C wi 0 a) CU ci) (a Q_ w§ -,

FIGURE 4-13 NUMBER OF DAYS WITH SIGNIFICANT RAINFALL DURING DAVISISLANDS PRE-EVALUATION PERIOD.

POST-EVALUATION SIGNIFICANT RAINFALL DAYS (>0.49")

7

6-

(05

(U 4 Mean0 36Z 2-

0 - 1 1 1 1 1 1

I I I I ' I I I I i I O O O O O

C 3 C) 0. tj > 0 C 0 ^ -CL I 3 C ) 0.Sz a - u < - < U) 0

FIGURE 4-14 NUMBER OF DAYS WITH SIGNIFICANT RAINFALL DURING DAVIS

ISLANDS POST-EVALUATION PERIOD.


June 1996

To determine whether there was a correlation between lawn irrigation water used byparticipant households and rainfall, the total bi-monthly inches of rain that fell duringeach of the pre- and post-evaluation periods was statistically evaluated for correlationwith the average bi-monthly irrigation water use recorded for those periods. It wasexpected that rainfall and irrigation water use would be negatively correlated (i.e., asrainfall increased, irrigation water use decreased). Correlation coefficients vary between0 and 1.0; values close 1.0 or-1.0 indicate a strong relationship between two variables.

When comparing lawn irrigation water used by participant households and rainfall,results showed a positive correlation coefficient of 0.27 for the pre-evaluation period anda negative correlation coefficient -0.05 for the post-evaluation period (Appendix D,Exhibits D-4a and D-4b). In addition to total inches of rainfall, correlation coefficientswere also calculated between the total bi-monthly number of days with significant rainfalland the average bi-monthly irrigation water use recorded for the pre-and post-evaluationperiods. Results showed positive correlation coefficients of 0.40 for the pre-evaluationperiod and 0.02 for the post-evaluation period (Appendix D, Exhibit D-4c and D-4d).Both analyses show much less correlation between irrigation water use and rainfallduring the post-evaluation period than during the pre-evaluation period.

To determine whether there was a correlation between lawn irrigation water used bycontrol households and rainfall, the total bi-monthly inches of rain that fell during each ofthe pre- and post-evaluation periods was statistically evaluated for correlation with theaverage bi-monthly irrigation water use recorded for those periods. Results indicatedpositive correlation coefficients of 0.63 for the pre-evaluation period and 0.18 for thepost-evaluation period (Appendix D, Exhibit D-5a and D-5b). In addition to total inchesof rainfall, correlation coefficients were also calculated between the total bi-monthlynumber of days with significant rainfall and the average bi-monthly irrigation water userecorded for the pre-and post-evaluation periods. This resulted in positive correlationcoefficients of 0.67 for the pre-evaluation period and 0.18 for the post-evaluation period

(Appendix D, Exhibit D-5a and D-5b). Similar to participant households, both analysesshow much less correlation between irrigation water use and rainfall during the post-evaluation period than during the pre-evaluation period. These results suggests thatboth control and participant households may not have irrigated as much during the post-evaluation period because rainfall had increased.


June 1996

5.0 SUMMARY AND CONCLUSIONS

As part of their continued efforts to improve water use efficiency through conservation,the City of Tampa Water Department developed a program called "Sensible Sprinkling"for residential customers. The program's primary goals are for individual residents tobecome self-sufficient in improving outdoor water use efficiency and to reduceresidential customers' landscape water use by at least 25 percent. Landscape irrigationsystem evaluations, designed to determine the efficiency of a homeowner's existinglandscape irrigation system, were one of the most important elements of the SensibleSprinkling program.

This study focuses on Davis Islands households' acceptance of the irrigation systemevaluations completed under the Sensible Sprinkling program and the water savingsthey realized. Two groups of Davis Islands households were selected for this study;participant and control homes. Participants were those that voluntarily participated in

the irrigation system evaluation component of the program. Control homes were

essentially homes within the neighborhood that did not participate in the program but

had similar household characteristics. Control homes were selected to ascertainwhether any difference in water use realized by participant homes after having had

irrigation system evaluations completed were due to the evaluations and not caused byexternal factors experienced by the entire community or neighborhood.

Rainfall data were also used to assess seasonal and/or anomalous variations in weather

conditions that may have influenced the amount of irrigation water used during the pre-

and post- evaluation periods. Data from the Howard F. Curren Advanced Wastewater

Treatment (AWT) Plant were obtained from the City of.Tampa for the study period.Specific results from the study are summarized below:

Homeowner Acceptance: A post-irrigation system evaluation questionnaire was sent

to Davis Islands participant households to determine the effectiveness of the program

and to assess whether participants implemented any of the changes recommended to

modify their irrigation systems and landscapes. Approximately 49 percent of the 157Davis Islands participant households returned surveys. Results pertaining tohomeowner acceptance are summarized below:

*Program Satisfaction: On a scale of one (very dissatisfied) to ten (verysatisfied), participants were generally satisfied with the overall program asevident by the weighted average satisfaction rating of 8.8. Programcharacteristics such as how understandable the report was and how realisticit was to implement the changes also received positive weighted averagesatisfaction ratings of 8.8 and 8.2, respectively.


June 1996

*Changes Implemented: Seventy-eight percent of the respondents indicated

that they implemented some of the changes recommended with regard to

irrigation watering times; 67 percent indicated that they made between 50percent and 100 percent of the recommended changes. Respondents

indicated that they had not made the recommended irrigation watering time

changes because: they had not had time (40 percent); they did not know

who to call to make the changes (20 percent); did not know how to adjust the

time clock (13 percent); or the recommendations were too technical (13percent).

Thirty-two percent of all study households stated that they had installed the

rain shut-off device while 50 percent reportedly did not (16 respondents

indicated that they had not been offered a device and 5 said they already had

one). Records indicate that 27 homes received rain shut-off devices.

Twenty-four percent of the respondents indicated that they made some

changes recommended with regard to replacing their existing

landscape/plant stock while 42 percent indicated that they had not made

changes.

Eighty-one percent of respondents indicated that they implemented some of

the changes recommended to repair or modify their particular irrigation

system's design and/or condition; 76 percent reported to have made between

50 percent and 100 percent of the recommended changes. Costs to repair

or modify their particular irrigation systems reportedly averaged $95.

Respondents who indicated that they had not made changes recommended

to repair or modify their particular irrigation systems gave the following

reasons: they had not had time (40 percent); they did not know who to call to

make the changes (25 percent); the recommendations were too technical (15

percent); or the changes were too expensive (15 percent);. Fifty percent of

respondents indicated that a rebate should be provided for the irrigation

system components (the average suggested rebate was $78). Other

suggestions selected included: providing a list of contractors to do the work

(25 percent); conducting a follow-up visit to review recommendations (20

percent); providing a rebate for the labor to have a contractor complete

repairs (20 percent); and providing a list of stores that carry parts (15

percent).

*Landscape Appearance: Seventy-one percent of the respondents

indicated their landscapes looked the same after changes were made

compared to before; none responded that their landscapes were worse and

29 percent said they were better.


June 1996

Water Use Characteristics: To assess any reductions in water use achieved byresidents that had landscape irrigation system evaluations completed, bi-monthly wateruse records for both participant households and control households were obtainedthrough the Tampa Water Department. Results pertaining to water use characteristicsare summarized below:

*Total Water Use - All Households: Pre- and post-evaluation water usedata was available for 114 of the 157 participant households and 113 of the157 control homes selected. Davis Islands participant households' totalwater use averaged 673 gallons per house per day (g/h/d) during their pre-evaluation period and 490 g/h/d during their post-evaluation period. The 183g/h/d difference between participants' pre- and post-evaluation total wateruse averages represented a statistically significant reduction.

Davis Islands control households' total water use averaged 610 g/h/d during

their pre-evaluation period and 505 g/h/d during their post-evaluation period.

The 105 g/h/d difference between controls' pre- and post-evaluation totalwater use averages also represented a statistically significant reduction.

The data show that both participant and control households' total water use

averages were significantly less during the post-evaluation period than

averages recorded during the pre-evaluation period. There was nosignificant difference between participant and control households' post-

evaluation total water use averages.

Irrigation and Other Water Use - Households With Lawn Meters: Toobtain a more accurate estimate of reductions in water use from irrigation

system changes, households with separate lawn irrigation meters weregrouped and their average pre- and post-evaluation water uses were

compared. The 72 Davis Islands participant households with separate lawn

meters used 570 g/h/d of lawn irrigation water during the pre-evaluationstudy period and 354 g/h/d during the post-evaluation study period. Theseresults translated into a statistically significant reduction in lawn irrigationwater of 216 g/h/d (38 percent). Other water use by these homes wasconsistent between the pre- and post-evaluation periods, suggesting thereductions were from changes to lawn irrigation water use.

The 64 Davis Islands control households with separate lawn meters used506 g/h/d of lawn irrigation water during the pre-evaluation study period and348 g/h/d during the post-evaluation study period. These results translatedinto a statistically significant reduction in lawn irrigation water of 158 g/h/d (31percent). Other water use by these homes was consistent between the pre-


June 1996

and post-evaluation periods, suggesting the reductions were from changes tolawn irrigation water use.

The data can not be used to conclude that the reduction in irrigation wateruse by participant homes during the post-evaluation period was due to the

irrigation evaluation audits. Participant households' irrigation water use

averages during the pre- and post-evaluation periods were not significantlydifferent from those experienced by control homes. Reductions in irrigationwater use experienced by participant and control homes with separate lawnirrigation meters were both statistically significant and, although participants

averaged 58 g/h/d more of a reduction in irrigation water use than control

homes, their pre- and post-evaluation differences were not statistically

significant.

* Total Water Use - Households With and Without Lawn Meters: To

assess whether households with separate lawn meters used more or less

water than homes with only one meter installed, 42 participant homes and 48

control homes with only one total water use meter were grouped and their

average pre- and post-evaluation total water use were compared to

households with separate irrigation meters. Results indicated that during the

pre-evaluation monitoring period, participant households with separate lawn

irrigation meters averaged 790 g/h/d total water use compared to an average

473 g/h/d for households that had only one meter. This difference most likelyreflects the fact that customers with separate lawn meters did not pay sewer

charges for irrigation water and therefore probably used irrigation water more

indiscriminately.

* Reductions in total water use experienced by participant homes with and

without separate lawn irrigation meters were both statistically significant;

however, those with lawn meters experienced a greater total water use

reduction than homes without lawn meters experienced.

* During the pre-evaluation monitoring period, control households with

separate lawn irrigation meters averaged 766 g/h/d total water use compared

to an average 403 g/h/d for households that have only one meter. Similar to

participant homes, control households with separate lawn irrigation meters

used significantly more water during the pre-evaluation period than control

homes without lawn meters experienced. Furthermore, control householdswith separate lawn meters experienced an average 21 percent (158 g/h/d)reduction in total water use compared to a 9 percent (35 g/h/d) reductionexperienced by homes with one meter installed.


June 1996

*Reductions in total water use experienced by control homes with separatelawn irrigation meters were statistically significant; however, the 9 percentreduction experienced by controls households without lawn meters was notstatistically significant. As was the case with participant households, controlhomes with lawn meters experienced a greater total water use reduction thanhomes without lawn meters experienced.

The average 183 g/h/d reduction in total water use for the Davis Islands participanthouseholds was greater than 152 g/h/d savings recorded during an evaluation of 208homes that participated in the Sunset Park Landscape Irrigation System ConservationProgram (Mingledorff, et. al. 1996). There was no significant difference between theSunset Park study's pre- and post-evaluation rainfall data, however, control homes werenot available for comparison in that evaluation. It is therefore unknown whether SunsetPark households that did not participate in the sensible sprinkling program also usedless irrigation water during the post-evaluation period as was the case for Davis Islandscontrol households. These results point out the importance of including a control orcomparison group in water use studies such as these.

Weather Conditions: Rainfall data were used to compare weather conditions andassess whether the pre-evaluation period differed significantly from the post-evaluationperiod. Average daily rainfall data were obtained from the a weather station maintainedby the City of Tampa at the Howard F. Curren Wastewater Treatment Plant locatedapproximately 1/2 to 1/4 mile east of the Davis Islands Neighborhood.

* Rainfall averaged 0.11 inches per day during the pre-evaluation period and0.16 inches per day during the post-evaluation period. The average dailyrainfall recorded over the cumulative pre-evaluation (518 days) wassignificantly less than that recorded during the cumulative post-evaluation(518 day) period. An average of 2 days per month with significant rainfall(defined as rainfall 2 0.5") was recorded during the pre-evaluation period

compared to an average of 3 days per month recorded during the post-evaluation period; however, this comparison was not statistically different.

* Both the pre- and post-evaluation periods were 17 months long. Becausehouseholds had different twelve month pre- and post-evaluation periods, anassessment was made to evaluate whether the rainfall was statisticallydifferent for individual household's pre-and post-evaluation periods. Of thetwo representative 12 month evaluation periods selected from the studygroup, the earliest household's post-evaluation had significantly more totalinches of rainfall than its pre-evaluation period; however, there was nodifference between the number of days with significant rainfall events.Conversely, there was no difference in total rainfall or the number of days


June 1996

with significant rainfall events during the latest household's pre- and post-evaluation periods.

* To determine whether there was a correlation between lawn irrigation waterused by study households and rainfall, the total bi-monthly inches of rain thatfell during each of the pre- and post-evaluation periods as well as the total bi-monthly number of days with significant rainfall were statistically evaluatedfor correlation with the average bi-monthly irrigation water use recorded forthose periods. Analyses showed that rainfall and study households' averageirrigation water use were much less correlated during the post-evaluationperiod than the pre-evaluation period. These results suggest that bothcontrol and participant households may not have irrigated as much during thepost-evaluation period because rainfall had increased.

* Results of the Davis Islands study leads to speculation that the increase inrainfall during the post-evaluation period may have caused both groups ofstudy households to use less irrigation water. Results suggest that theSensible Sprinkling Program was only responsible for a 10 percent reductionin water use (i.e., the difference between the control group's 17 percent andthe participant group's 27 percent total water use).

* Reduction in irrigation water use experienced by both participant and controlhouseholds during the post-evaluation study period may have been partiallycaused by increases in rainfall. Other possibilities include: strongerenforcement of irrigation watering restrictions during the post-evaluationperiod and indirect influence of control households via word of mouth orexposure to other program elements such as the landscape and irrigationworkshops or the water-wise landscape demonstration sites. Further studyof these possible external influences need to be investigated. In addition,long-term monitoring of rainfall and water use for both Sunset Park and DavisIslands neighborhoods is critical to determine the longevity of this type ofwater conservation program.


June 1996

6.0 REFERENCES

Anderson, D.L., Mulville-Friel, D.M., and Nero, W.L., 1993. The Impactof Water Conserving Fixtures on Residential Water Use Characteristics inTampa, Florida. Proceedings of Conserv93 Conference, December 12-16, 1993,Las Vegas, Nevada. pp. 611-628.

Anderson, D.L., Mulville-Friel, D.M., and Nero, W.L., 1993. The Impactof Water Conserving Fixtures on Institutional and Multi-Family Water Use CaseStudies of Two Sites in Tampa, Florida. Proceedings of Conserv93 Conference,December 12-16, 1993, Las Vegas, Nevada. pp. 1817-1830.

City of Tampa Water Department. 1994. Water Conservation Program Summary:1989-1994. Tampa, Florida: City of Tampa Water Department.

Mulville-Friel, D.M., Anderson, D.L., and Nero, W.L., 1996. Water Savings andParticipant Satisfaction Realized: City of Tampa Toilet Rebate ProgramEvaluation. Proceedings of Conserv96 Conference, January 4-8, 1996, Orlando,Florida, pp. 371-375.

Mingledorff, N., Mulville-Friel, D.M., and Anderson, D.L., 1996. Sensible Sprinkling: ANeighborhood Landscape Water Conservation Program. Proceedings ofConserv96 Conference, January 4-8, 1996, Orlando, Florida, pp. 569-573.


June 1996

APPENDIX A

SENSIBLE SPRINKLING PROGRAM INFORMATION

The City of Tampa :. 'presents: * .

e sbl Sensible Sprinklinge n s ib leThe City ofl Tampa's outdoor ( ter conservation

. program consists of several opportunities tolearn about and begin vater-efficient landscap-Sing. You and your community and/or organizationSBp*rin k lin g may participate in any or all of the variedoptions. \\'We also welcome suggestions. and willwvork with you to custom-tailor a program to fityour needs and our goals.

Our goal"s? To reduce residential landscape wateruse by 25 percent. To meet this goal, xe'll helpyou improve outdoor water use efficiency.

You can scelect from amonlg the tfllowing to be-come a morlle co(irvatlioii-colnscious community.

How You laveThe (Cit charg:s a conservation rate. or sur-chllarge. to custlomrns \vho uise mllor than an aver-age atlntilt of water. .\)pprlximately 2 1 percentof city resilential custloiers c'tlrrently pay thisSs urc'eharge'-aInd oxerwat rig is \wherer imost ofthe excvss xater goes.

Our Sensible Sprinkling program shoxs you howto climinate the excess watering that results inhigher bills. By participating. you'll not only savea v\aluable natural resource-you'll also sa\'e dol-lars. Makes sense, doesn't it?

How Yourlandscape Benefits

The techniques and activities wxe'll introduce areA Guide to based on substantial research and successful

Wat er-Efficient application. Your landscape doesn't go cold.turkey on the garden-path to conservation-the

Landscaping eclements have been skillfully desipned to i\ve you

a Ih cllhiier. happier landtscape.Exhibit A-I Page 1 of 6

S- An InvitationThe City of Tampa wants your help. We'remaking progress in our water conserva-tion efforts and we'd like to invite you totake the next step with us.

How the City HelpsIt's simple:SThe Cily will provide an outdoor

water evaluation for individual * We do all the work...homeowners to determine thl effi- * You do all the saving...ciency of an e\isling automatiic * Your landscape.reaps all theslrinkling syslem. benefits...

SWe'll provide a a llonaltic raiin shut-off device for watl.ering syselms.

A 'How to Participate\\e'll helpl you develop a Neriscape Call the City of Tampa Water Departmentdemonstration sil(e that will x, ;avail- at 274-8762 and ask about Sensible;ale for continuous ediuclation. Sprinkling opportunities. The City will

provide details of the program and eachWe'll hold one or a series of work- step involved-and how to get started onshops to discuss efficient landscape Sensible Sprinkling.practices and Xeriscape. Workshopattendees will receive packets ofspecific information on numerous

n('fonervation-oriented issues.

' Cit\ water conservation and land-scape experts will train a represen-tative who will instruct homeownersand program participants aboutXeriscape landscaping and schedul-ing their sprinkling cycles.

We'll help your neighborhood orgroup establish a "Water Watch" -program to identify and remind \ * -_

water-wasters about lawn watering -rules. " I a

Exhibit A1 Page 2 of 6

Exhibit A-1 Page 2 of 6

Sprinkler SystemEvaluation

The Cily of, 1 TlIiipl i ill 'prmi idll ai1n ouldoor efficiency of the sprinkler system andwivalr evalialioan /br ind ilmduatl holiuineliwc' to reducing water usage.tdelrmille thle \i ir r'icinciwy 1l'al n exisling * A\ comprehcnsive plant guide.

irrigationt or sprin'kler , )sitilem.These Sensible Sprinkling evaluations arc

One of the easiest ways to decrease water available to a limited number of homeowners,usage is to determine whether your sprinkler and requests will be accepted on a first comesystem is working correctlly and effic'icntl. basis.

The Tampa Water Dlparltenl \\illpl)rovide a To request an evaluation. fill out the formfree outdoor \\'aler evaluation of your sprink- below and mail it to: Tampa Waterler system--both automatic and manual in- - epartment. 306 E. Jackson St. #5E, Tampa.ground systems-- that use City water. ,1 33602.

The evaluations could reduce your landscape \e will call you for an appointment.water use by 25 percent or more. \\e \\ illcheck: 1) Do you have an in-ground sprinkler

system? J yes 0 no* Water distribution to ensure it is even.ystem? yes no

* Sprinkler heads for currect size, angle of 2) Is it controlled by an automatic controllerspray and equipment damage. or is it. manual only?

* \hether your plants and turf are watered 0 automatic 0 manual onlyseparately: if not. we'll make recommenda-Lions for a retlrolit. 3) Does the irrigation system use City water?

* The need for an aiutoinatic rain shil-oltff yes no

switch. If you have an automalic s\sltem. Nanmeand no switch. \\e \\ill provide one at nocharge. Address .....

The Tampa Water Department will provide: City ... ... ......

* \ seasonal sprinkling schedule for each Phone (Iome).......... .......ot)ne

* .\llernative ways to reduce walcer use, such (WOork) _. .... .......

as reducing turf areas where appropriate, . For more information on Sensible Sprinkling,using mlcro-slprinlklers. adding mulch. etc. contact the City of Tampa's water department

* A detailed written report for the homeown- at 274-8762.er with recommendations on improving the

(over)

ExhibitA-1 Page 3 of 6

Irrigation andXeriiscape

Workshops

T'he Ci.y of Tampa \will hold one1 or a sceries of Speakers will answer questions about land-workshops to discuss e•lc'iecnl Sensible scape and sprinkling. We will also distribute aSprinkling praclices mnd .\er.iscape. II'ir'ksholp comprehensive package of informationalallendees will receive packets of specilic malerials covering all aspects of water con-informalion on numlerous conse(V';ilion-o'ie- servalion-from how to start a Xeriscapeed issues. landscape to how to select a watering system.

W\e're taking our message to citizens through For information on our irrigation anda series of informative seminars. Offered in Xeriscape workshops, contact the City ofsupport of the City's Sensible Sprinkling pro- Tampaa's waler department at 274--8762.gram. the seminars consist of the following:

* Xeriscape: \Wae\ r cons('ervalioln througli crc-alive landscaping can sa;\ utp to M) percentof 'water used for lanldscapes. This can Ieaccomplished in plases and may utilize anexisting landscaping. eliminating costly. up-front expenses.

* Landscape Maintenance: Tips on lertilizing.planting. pruning and general yard mainte-nance for grass and plants.

* Irrigation Evaluations: \e will show \outhe different type water-wasting conditionsfound in poorly maintained or poorlydesigned sprinkler systems. We will explainthe solutions to these problems, and \\illassist you in conserving water and main-taining your own system.

* Sprinkler System Components: This sessionprovides a non-technical look at. the differ-ent parts of a sprinkler system showinghow the system works and how you canmake simple adjustments that will conservewater and save money.

(oI c'r)


Sensible IeriisapeSprinkling Demonstration

Trainee life_

City l'o "'ampa water conservation and land- The Clly of Tampa will help you develop ascapr c\pc'rls' will irain a repr'sentalive fIrom Xerlscape demonstration site that will be.our group who Iwill inslrc'l other homeown- available for continuous education.crs aboul .\(riscape landscaping and schedul-

in ir sprinklin cycles. Xeriscape landscaping, combined withg iSensible.Sprinkling, can save 30 to.80 percent

Once we've worked with you on establishing of the water used in an existing landscape. Awater-efficient techniques, the City of'Tampa . Xcriscape landscape can be installed in phas-won't leave >ou without the necessary es, utilizing an existing landscape, minimizingresources Io continue conservation el'orts on the initial investment, and maximizing long-anI ongoing basis. You'll be able to call on our term enjoyment. And Florida Xeriscapes canexperts for help: but we're also asking each be as lush as traditional landscapes. using

group we work with to identify volunteer rep- much less water.resentatives for special training.

A Xeriscape demonstration site in your com-These on-site representatives will be available munity will show you exactly how this islo answer homeowners' questions ranging accomplished, offering visitors guided andfrom Xeriscape to how to check a watering self-guided tours of this proven water-savings\stem's lime clock to general Sensible landscape concept. With your guidance, the

Sprinkiing facls. City will help select a Xeriscape site that is:

T1'lhe onl requirement is that your representa- * Visibletlie(s) be readily available and willing to pro- * Accessible, for self-guided tours and \isitors

vide help when needed. Once you've identified * Applicable to.homeowners' needs.a representative and he/she has been trained,\\e \\ill dislribule to other inlerested residents When ompleted the site will display aland-

their names, phone numbers and best times to scape mixing existing plants with new flower-reach thlem. ing, native and drought tolerant plants and

trees grouped according to their water needs.For more information about Sensible A state-of-the-art sprinkler system also will beSprinkling, contact the City of Tampa's water installed.

ldepartment at 274-8762. For information on how to proceed with estab-

Representative's lishing a Xeriscape Demonstration Site in your\ame: ____ __ _ community, contact the City of Tampa's water

department at 274-8762.I;lI$ Illllll'': ______________

\hen to call:


Automatic Rainshut-off Device

c Cily, o, 'ir ,,lf will ,proul,•in,,ilonlc I would like to participate in the City of..rain shul-olT sensor lfn, sprinklvr s\wlvms.rin ./-ofcn. r .pr r . Tampa's raini shut-off sensor program.Since you are illnerested in workinhg with the. f Sensoi

,., . Please send:; 0 Informat on 0 SensorCilt of TIampa on the Sensible Sprinkling pro- .. :gramin. \ve' ;re oflTring aulomatic rain shut-off Name:sensors for sprinkler s\slems that can utilizethem.* Street: .

Cilly. State. Zip:Hovw KRain Sensors \Vork

The sensor shuts otl a; sslem il' it is operaling lepho:dluring a rain shiowr or is schedlulcd to run Signature:the fi llow) in (l day ;nld it has rec' ntlly\ r;uilic(l. Itwill also relurn the system to its regular oipr.'- DatIe: _ -_

alion during iior ani \\c iliih'r collt ilionls.

This logical "don' t \\ alr \\hlin it's rainingi"device can sa\c( I'romi 25--(0 iprcctiil in Iloutdoor

;water use-and reduce your water bills.

You may Install the sensor yourself or ha\e acertified irrigation c( tractlor install it. (Youare responsible for Il(e cost of installation.

*Setsor \\ill function only with clectric;allyoperated valves, not wvilh hydraulic val\tssometimes found in older systems. Th'e City'ssprinkler evaluation programi or an indepen-dent tronractor can i(entily the type \valet\used in yulr system if you are tuncertain.

If you are interested in itnstalling a rain shlut-off sensor. please fill out the atlached couponand mail it to: Tampa Watelr Depariment. 306E. Jackson Street 45R, Tampa. PI, 33602. Formore information, call 274-8762.

(Over)

Exhibit A-1I Page 6 of 6

April 6, 1994

Mr. and Mrs.

Re: IRRIGATION EVALUATION

Dear Mr. and Mrs.

Thank you for participating in the MOBILE IRRIGATION LABORATORY EVALUATIONPROGRAM. This program was designed to evaluate how well your irrigation system is operatingand to give you guidance on managing your system. Our goal is to assist you in determining theproper amount of water required by your landscape, and to recommend landscape changes orsystem improvements that will promote water conservation.

This program was developed by the University of Florida's Institute of Food and AgriculturalSciences and is operated in conjunction with the City of Tampa Water Department.

Field tests were undertaken to determine the uniformity, adequacy, and efficiency of the irrigationsystem. These tests allow us to make recommendations that will enhance your landscape andconserve water.

YOUR RECOMMENDATIONS ARE:

PLANTS: Plants recommended for landscape are considered "natural" by the SWFWMD plantguide. This means that once established, they will survive on natural rainfall alone. Significantreductions in water consumption will occur if entire zones are landscaped with natural shrubs andground cover. These zones can then be skipped during most irrigation cycles.

ZONE 1

* Turf is very thin below Oaks along Martinique. Consider planting a natural ground coversuch as Dwarf Confederate Jasmine in this area. Once established, cap the two impactsprinklers watering this area.

* Repair or replace the non-rotating impact sprinkler along the brick walkway in the backyard.

* Prune vegetative interference around the 900 impact sprinkler in the comer of the backyard caused by the large Philodendron.

* Cap the 900 spray nozzle in the Azaleas bed in the back yard. This area is beingadequately watered by the impact rotor at the back comer of the garage.

* Cap the 3600 spray nozzle along the side of the garage. This is low visibility area. Iflandscaping here is desired, plant a natural ground cover. Stepping stones could beadded to allow a walkway.

Exhibit A-2Page 1 of 5

ZONE 2

* Prune vegetative interference.

* This zone is very drought-tolerant and will only require periodic supplemental irrigation.

ZONE 3

* Replace the thin strip of turf along the side of the driveway with natural shrubs andground covers such as Indian Hawthorne and Juniper. Once established, cap the twospray head sprinklers and the impact rotor in this area.

* If the Azaleas in this zone are replaced with Indian Hawthorn, this entire zone will bevery drought-tolerant and will require only periodic irrigation.

* Replace the 3600 spray nozzle beside the carport with a 4X30 side-strip spray nozzle.This will reduce overspray onto the driveway.

* Repair the leak below the 2700 spray head sprinkler near the front comer of the carportand cap this location.

* Replace the Series 15 end-strip spray nozzle along the stone driveway with a 1800Series 15 spray nozzle.

* Prune vegetative interference.

ZONE 4

* Repair the break in the submain below the largest oak tree.

IRRIGATION DURATION: Based on program calculations I would like to recommend the followingschedule for each zone. The operating times reflect the fact that sprayheads deliver more waterthan rotor sprinklers. This irrigation duration should allow for a deeper development of the turf roots,greater soil moisture storage and promote a more drought tolerant turf.

IMPORTANT: To avoid stressing vegetation, reduce current irrigation times by 10 minutes everytwo weeks. This will allow vegetation to acclimate to the new irrigation schedule.

ZONE 1: 30 minutes

ZONE 2: 15 minutes

ZONE 3: 20 minutes

ZONE 4: 30 minutes

Table 1. Gallons of water used per operating cycle


ZONE Current Time Changes Only Recommendations &Time Changes

ZONE #1 830 830 526

ZONE#2 295 147 147

ZONE #3 706 471 314

ZONE #4 849 849 849

TOTAL 2680 2297 1836

Apply water during the early hours of the moming.

Non-turf irrigation:

* Once per week I April - October* Once every two weeks / November - March

Turf irrigation:

* Twice per week I April - October* Once per week I November - March

If your controller cannot be programmed to operate independent irrigation schedules for turf andnon-turf applications consider installing one that does. Two examples of such controllers are theToro Vision-II and Rain Bird Hybrid ESP.

Additionally, let your lawn to tell you when to water, considerable savings can occur withoutjeopardizing the quality of your landscape - see "Best Management Practices".

A rain shut-off device is a useful tool to use along with the recommended irrigation durations. Thedevice can be mounted to an eve or rain gutter away from trees and wired directly to the controller.

Approximately once per month inspect the irrigation system. Tum on each irrigation zone and

visually examine all sprinkler heads, (are they broken, spraying in the wrong direction, or notrotating). Take notes for later reference. Five minutes of operating time is allowed per zone for thisinspection.

SPRAY HEAD SPRINKLERS: The spray head is generally composed of two parts, the body andthe nozzle. The body and nozzle come in various lengths and spray pattems which should bematched to your landscape's needs. Spray heads are stationary sprinklers; they have no movingparts except for popping up and down. In the recessed position they are protected from foot trafficand mowing hazards.


Spray heads have radii from 12 to 17 feet and cover a smaller area than rotor heads. They alsodistribute a lot of water on a small area resulting in high precipitation rates. This creates the need forvery short irrigation durations.

ROTORS: Rotary heads cover a large area and have a low application rate. As a result, they havelower precipitation rates than spray heads. Rotary heads have to run much longer than spray headsto deliver the same amount of water over a given area.

The two basic types of rotary heads most often used are the impact driven heads and the geardriven heads. The impact driven heads use a stream of water that throws the sprinkler discharge tobump a spring loaded arm which slowly turns the sprinkler head. In the gear driven heads, waterturns a series of gears in the sprinkler body which causes the sprinkler head to rotate in a slow andquiet manner.

MIXED SPRINKLERS: Sprinklers with different application rates are being used within ZONE #3.

Sprayhead type sprinklers, commonly used for shrub areas and sometimes for turf, have higherapplication rates than rotor type sprinklers. When the two types are mixed in the same zone, theshrubs are generally overwatered while the turf receives the correct application.

SPACING: The sprinklers covering the turf in ZONE #4 should be adjusted to overlap sufficiently toprovide good coverage. A uniform design for rotor type sprinklers would have the spray from onehead almost touching the other head. Poor coverage results from the wide spacing and creates theneed for longer operating times. If a high quality turf is desired in a system with poor spacing, thenthe water used to meet that adequacy level is extremely wasteful.

Thanks again for participating in the MIL project. I hope this information will benefit you. There havebeen various recommendations and suggested changes made in this report. If you have anycomments or questions please call me at 813-929-3219.

SAVE WATER IT MAKES GOOD CENTS!


APPENDIX A, TABLE A-1. DAVIS ISLANDS PARTICIPANT HOUSEHOLDS THAT RECEIVED IRRIGATIONSYSTEM EVALUATIONS.

House Irrigation Evaluation Dates Rain Shut-OffNo. Site Visit Report Mailed Device Received

1 4/7/94 4/7/94 Yes2 4/7/94 4/7/94 Yes3 4/8/94 4/8/94 No4 4/8/94 4/8/94 No5 4/4/94 4/4/94 No6 4/4/94 4/4/94 Yes7 4/5/94 4/5/94 No8 4/5/94 6/24/94 No9 4/6/94 4/6/94 No

10 4/6/94 4/6/94 No11 4/7/94 4/7/94 No12 4/7/94 4/7/94 Yes13 4/8/94 4/26/94 Yes14 4/8/94 4/26/94 No15 4/14/94 4/14/94 No16 4/14/94 4/18/94 No17 4/15/94 4/18/94 Yes18 4/15/94 4/15/94 No19 4/13/94 4/13/94 No20 4/13/94 4/6/94 No21 4/13/94 4/13/94 No22 4/14/94 4/14/94 Yes23 4/14/94 4/18/94 No24 4/14/94 4/14/94 No25 4/15/94 4/18/94 Yes26 4/15/94 4/19/94 No27 4/21/94 4/21/94 No28 4/21/94 4/21/94 Yes29 4/22/94 4/22/94 Yes30 4/22/94 4/22/94 Yes31 4/18/94 4/18/94 Yes32 4/18/94 4/18/94 No33 4/19/94 4/19/94 No34 4/19/94 4/25/94 No35 4/20/94 4/20/94 No36 4/20/94 4/26/94 No37 4/20/94 4/25/94 No38 4/23/94 4/25/94 No39 4/23/94 4/25/94 No40 4/23/94 4/25/94 No41 4/25/94 4/25/94 No42 4/25/94 4/25/94 No43 4/26/94 4/26/94 No44 4/26/94 5/2/94 No45 4/26/94 5/2/94 No46 4/27/94 4/27/94 No47 4/27/94 4/27/94 No48 4/27/94 4/27/94 No

TABLEA1.XLSPage 1 of 4

APPENDIX A, TABLE A-1. (CONTINUED).

House Irrigation Evaluation Dates Rain Shut-Off

No. Site Visit Report Mailed Device Received

49 5/2/94 5/2/94 No50 5/2/94 5/3/94 No51 5/3/94 5/3/94 No52 5/3/94 5/9/94 Yes53 5/3/94 5/9/94 No

54 5/4/94 5/4/94 No55 5/4/94 5/4/94 No56 5/4/94 5/4/94 Yes57 5/5/94 5/5/94 No58 5/5/94 5/5/94 Yes59 5/6/94 5/8/94 No

60 5/9/94 5/9/94 No61 5/9/94 5/10/94 No

62 5/10/94 5/10/94 No63 5/10/94 5/10/94 No

64 5/10/94 5/10/94 Yes

65 5/11/94 5/11/94 No66 5/11/94 5/18/94 No67 5/12/94 5/18/94 Yes68 5/12/94 5/25/94 No

69 5/16/94 5/16/94 No70 5/16/94 5/16/94 No71 5/17/94 5/17/94 No72 5/17/94 5/17/94 No73 5/17/94 6/6/94 No74 5/18/94 5/18/94 No

75 5/18/94 5/18/94 Yes

76 5/18/94 5/18/94 No

77 5/19/94 5/24/94 No78 5/23/94 5/23/94 No79 5/23/94 5/24/94 Yes

80 5/24/94 5/24/94 Yes81 5/24/94 5/24/94 No82 5/24/94 5/24/94 No

83 5/25/94 5/25/94 Yes

84 5/25/94 5/25/94 No85 5/25/94 5/25/94 Yes

86+87 5/26/94 6/7/94 No88 5/31/94 6/7/94 No89 5/31/94 6/7/94 No90 6/1/94 6/1/94 No91 6/1/94 6/2/94 No92 6/2/94 6/2/94 No93 6/2/94 6/2/94 No94 6/2/94 6/6/94 No95 6/3/94 6/3/94 No96 6/6/94 6/8/94 No



House Irrigation Evaluation Dates Rain Shut-OffNo. Site Visit Report Mailed Device Received97 6/6/94 6/7/94 No98 6/7/94 6/19/94 No99 6/8/94 6/8/94 No100 6/8/94 6/8/94 No101 6/8/94 6/28/94 No102 6/9/94 6/24/94 No103 6/9/94 6/15/94 No104 6/11/94 6/15/94 No105 6/14/94 6/14/94 No106 6/14/94 6/14/94 No107 6/15/94 6/19/94 No108 6/15/94 6/19/94 No109+110 7/5/94 7/8/94 No111 7/5/94 7/5/94 No112 7/6/94 7/6/94 No113 7/7/94 7/7/94 No114 7/7/94 7/7/94 No115 7/11/94 7/11/94 No116 7/11/94 7/11/94 No117 7/12/94 7/12/94 No118 7/12/94 7/12/94 No119 7/13/94 7/13/94 No120 7/13/94 7/13/94 No121 7/13/94 7/13/94 No122 7/14/94 7/14/94 No123 7/14/94 7/20/94 No124 7/18/94 7/18/94 No125 7/18/94 7/18/94 No126 7/19/94 7/31/94 No127 7/19/94 8/1/94 No128 7/20/94 7/20/94 Yes129 7/20/94 7/20/94 No130 7/20/94 7/20/94 No131 7/21/94 7/25/94 No132 7/25/94 7/25/94 Yes133 7/26/94 7/26/94 No134 7/26/94 7/26/94 No135 7/27/94 7/27/94 No136 7/28/94 8/1/94 No137 7/28/94 8/1/94 No138 7/29/94 8/1/94 No139 7/29/94 8/9/94 No140 8/1/94 8/8/94 Yes141 8/2/94 8/9/94 No142 8/2/94 8/10/94 No143 8/8/94 8/20/94 Yes144 8/9/94 8/9/94 No



House Irrigation Evaluation Dates Rain Shut-OffNo. Site Visit Report Mailed Device Received

145+146 8/9/94 8/9/94 No147 8/9/94 8/11/94 No148 8/11/94 8/11/94 No149 8/11/94 8/11/94 No150 8/12/94 8/18/94 No151 8/12/94 8/16/94 No152 8/17/94 8/17/94 No153 8/17/94 8/17/94 No154 8/17/94 8/17/94 No155 8/18/94 8/20/94 No156 8/18/94 8/18/94 No157 8/18/94 8/20/94 No158 8/20/94 8/20/94 No159 8/20/94 8/20/94 No160 8/27/94 8/27/94 Yes

Total 27+ Participant household was a duplicate or did not have an evaluation completed

(house numbers 86, 109, and 145).

TABLEAI.XLSPage 4 of 4

APPENDIX A, TABLE A-2. DAVIS ISLANDS PARTICIPANT HOUSEHOLDS SPRINKLER SYSTEM CHARACTERISTICS AND/OR PROBLEMS IDENTIFIED

DURING IRRIGATION SYSTEM EVALUATIONS.

House No. Number of Times Specific Recommendation Mentioned in Landscape Irrigation Evaluation Reports Total

No. Zones DU No.A B C D E F G H I _ J K L M Rec'md

1 8 51 1 0 0 0 0 15 1 0 0 0 0 0 6 232 6 39 2 0 3 0 0 1 6 0 0 1 0 0 2 153 4 48 2 8 0 0 0 0 3 0 0 1 1 0 0 154 6 45 0 5 0 0 0 9 5 1 0 2 0 0 4 265 2 50 0 1 0 0 0 0 0 0 0 1 1 0 1 4

6 4 46 2 1 1 0 0 3 1 0 0 2 0 0 0 107 2 57 0 0 0 0 0 1 0 0 0 0 2 0 38 4 54 1 0 1 1 0 1 0 0 0 2 0 0 2 89 3 2 3 0 0 0 2 0 0 0 1 0 0 1 910 4 3 2 0 0 0 7 0 0 2 2 4 0 2 2211 4 51 2 0 0 0 0 2 0 0 1 3 1 0 4 1312 3 0 3 0 1 0 2 0 0 0 0 1 0 713 4 50 0 0 0 0 0 1 0 0 0 2 1 0 2 614 5 6 2 0 0 0 1 0 0 0 0 0 0 2 1115 6 35 1 0 0 0 0 7 0 1 0 1 1 0 2 1316 6 47 0 5 0 1 0 1 0 2 0 3 4 0 4 2017 4 31 3 3 0 0 0 2 2 1 0 3 0 0 4 1818 3 67 1 2 0 0 0 4 2 0 0 1 0 0 2 1219 2 15 1 4 0 1 0 3 4 2 0 1 1 0 1 1820 5 1 0 0 0 0 1 0 0 0 0 1 0 1 4

21 6 69 2 0 0 0 0 2 0 0 1 1 1 0 0 722 7 49 2 3 0 1 0 5 1 1 0 1 5 0 5 2423 5 1 0 0 0 0 0 0 0 2 0 0 0 3 624 5 34 1 0 0 0 0 5 1 0 0 2 2 0 5 1625 5 74 0 0 0 0 0 0 0 0 2 1 2 0 1 6

26 6 54 2 3 0 0 0 3 0 1 0 2 1 0 3 15

27 4 24 3 2 0 0 0 0 2 0 0 4 0 0 2 13

28 7 44 3 1 0 0 0 4 2 2 0 1 0 0 7 2029 6 0 4 0 0 0 1 7 0 0 1 0 0 3 16

30 3 42 4 2 0 0 0 0 1 1 0 0 0 0 2 1031 5 60 0 1 0 0 0 1 1 0 0 3 2 0 5 1332 3 46 0 1 0 0 0 6 0 0 0 1 0 0 2 1033 6 33 0 0 0 0 0 2 0 0 1 0 3 0 4 1034 5 57 3 0 0 0 0 2 0 0 0 2 0 0 1 8

35 3 58 3 1 0 0 0 3 0 0 0 2 0 0 0 936 4 0 3 0 0 0 0 0 0 1 3 0 0 2 937 3 34 0 2 2 0 0 0 0 0 1 0 1 0 1 7



House No. Number of Times Specific Recommendation Mentioned in Landscape Irrigation Evaluation Reports TotalNo. Zones DU No.

A B C D E F G H I__ J K L M Rec'md38 7 55 3 2 0 0 0 0 1 1 0 0 0 0 2 939 4 69 0 0 0 0 0 0 0 0 1 1 0 0 1 340 3 54 1 1 0 0 0 5 0 0 0 1 1 0 0 941 8 50 1 1 0 0 0 3 0 1 2 4 1 0 7 2042 4 42 0 0 0 0 0 3 0 1 1 0 0 0 3 843 5 66 3 0 0 0 0 2 0 0 1 1 0 0 2 944 6 37 2 2 0 0 0 5 1 0 0 2 1 0 3 1645 3 54 0 0 0 0 0 1 0 0 0 0 0 0 1 246 2 2 0 0 0 0 0 0 0 1 0 0 0 1 447 6 71 2 0 0 0 0 0 0 0 0 2 0 0 2 648 3 0 0 1 0 0 0 0 0 1 1 2 0 549 3 69 1 0 0 0 0 14 0 0 1 0 0 0 2 1850 4 35 1 0 0 0 0 0 0 0 0 2 1 0 1 551 5 49 0 0 1 0 0 13 0 0 2 0 1 0 4 2152 3 72 2 2 0 0 0 8 0 0 0 1 0 0 2 1553 5 65 4 1 0 0 0 7 0 0 1 0 0 0 4 1754 7 52 3 0 0 0 0 7 2 0 1 1 0 0 7 2155 5 60 1 0 1 0 0 0 1 0 0 4 1 0 5 1356 5 1 2 0 0 0 3 3 0 0 2 1 0 2 1457 4 41 2 4 0 0 0 13 0 1 0 1 2 0 0 2358 5 0 3 1 1 0 0 1 1 0 1 0 0 0 859 3 58 0 0 0 0 0 6 2 0 0 2 0 0 3 1360 6 48 3 0 0 0 0 2 0 0 1 2 0 0 4 1261 6 52 3 0 0 0 0 2 1 1 0 1 0 0 0 862 3 68 1 0 0 0 0 0 0 0 0 3 0 0 2 663 4 57 1 4 0 0 0 10 2 0 0 1 0 0 3 2164 6 0 3 0 0 0 18 0 0 3 2 1 0 4 3165 3 45 1 4 0 0 0 3 1 0 0 2 2 0 2 1566 3 49 4 5 0 0 0 14 1 0 0 2 0 0 2 2867 10 2 2 0 0 0 6 0 0 1 3 5 0 1968 5 55 2 4 0 1 1 3 1 3 0 2 2 0 4 2369 3 56 1 2 0 0 0 8 0 0 0 2 0 0 3 1670 6 3 1 0 0 0 1 0 1 1 2 0 0 2 1171 2 39 4 2 1 2 2 4 0 1 1 2 1 0 0 2072 5 49 0 2 0 0 0 7 0 1 1 4 1 0 3 1973 5 61 4 4 0 0 0 2 0 1 2 1 3 0 3 2074 3 42 0 2 0 0 1 1 1 0 0 1 0 0 3 9




A B C D E F G H I___ J K L M Rec'md75 4 59 1 0 0 0 0 2 0 0 0 1 0 0 4 876 7 0 0 0 0 0 4 0 0 1 2 2 0 6 1577 6 59 1 3 0 1 0 1 0 0 1 3 2 0 0 1278 6 3 9 0 0 0 7 3 0 0 3 1 0 3 2979 4 63 0 2 0 0 0 2 0 0 0 0 0 0 1 580 4 63 4 1 0 0 0 6 1 0 0 0 1 0 3 1681 2 48 0 1 0 0 0 0 1 2 0 1 1 0 1 782 4 51 4 2 0 0 0 4 0 0 2 1 0 3 1783 3 57 3 2 0 0 0 1 0 0 1 0 1 0 3 1184 5 60 1 1 0 0 0 0 1 0 0 2 0 0 2 785 6 69 3 1 0 0 0 1 3 0 0 1 0 0 1 108687 3 64 1 1 0 0 0 0 0 0 0 0 0 0 2 488 3 56 1 0 0 1 0 3 0 0 0 0 4 0 3 1289 6 1 4 0 0 0 3 2 0 4 2 2 0 5 2390 8 1 3 0 0 1 6 0 0 2 0 0 0 0 1391 4 58 5 6 0 0 0 1 0 0 0 0 0 0 2 1492 3 45 2 0 0 0 0 2 0 1 1 2 2 0 0 1093 4 62 2 0 0 0 0 0 0 0 0 0 2 0 494 6 58 1 0 0 0 0 1 0 0 0 1 0 0 5 895 5 61 0 15 0 0 0 5 0 1 0 5 2 0 0 2896 4 49 0 0 0 1 0 6 1 0 1 0 3 1 2 1597 4 1 2 0 0 0 0 0 0 3 0 1 0 3 1098 4 48 3 0 0 0 0 0 0 0 1 0 1 0 2 799 3 57 0 4 1 1 0 2 1 2 1 0 3 0 15100 3 55 0 2 0 0 0 2 0 0 0 00 0 1 5101 3 2 1 0 0 0 2 0 0 2 0 3 0 1 11102 5 2 0 0 0 3 0 0 1 1 1 0 0 8103 4 36 4 2 1 0 0 0 2 0 1 0 1 0 1 12104 3 53 0 0 2 2 1 2 0 0 0 0 0 0 0 7105 6 55 1 0 0 0 0 0 1 0 1 1 0 1 5 10106 4 56 0 0 1 0 0 7 0 1 1 0 0 0 3 13107 1 1 0 0 1 0 1 0 0 0 1 2 1 7108 3 0 1 0 0 0 0 0 1 0 2 0 0 3 7109 +110 6 7 0 0 0 0 3 0 0 0 2 1 0 5 18111 6 56 2 2 0 0 0 1 0 0 0 5 0 0 3 13




A B C D E F G H I __ J K L M Rec'md112 3 51 0 0 0 0 0 0 0 0 0 2 2 0 2 6113 7 4 7 1 0 0 1 0 0 0 3 0 0 5 21114 7 66 2 2 0 0 0 10 1 0 0 2 0 0 6 23115 6 49 6 0 0 0 0 3 1 1 0 6 1 0 4 22116 6 70 0 5 0 0 0 3 1 1 0 0 0 0 1 11117 4 22 2 8 0 1 0 2 0 1 0 2 0 0 1 17118 3 71 0 2 0 1 0 0 2 0 0 0 0 0 2 7119 5 62 0 2 1 0 0 2 0 0 2 0 1 0 3 11120 3 48 0 0 0 0 0 2 0 0 0 1 0 0 1 4121 4 67 2 0 4 0 0 1 1 0 1 0 1 0 3 13122 3 50 2 1 0 1 0 4 0 0 0 1 1 0 1 11123 6 4 0 1 0 0 0 0 0 0 1 0 0 6124 4 63 0 0 0 2 2 0 0 0 2 0 0 0 2 8125 3 67 5 0 0 0 0 0 0 0 0 1 0 0 2 8126 4 53 0 2 0 4 1 4 0 1 1 0 0 0 4 17127 4 41 0 2 0 1 0 1 0 0 0 0 0 0 2 6128 6 78 5 10 0 0 0 5 0 1 0 4 0 0 1 26129 4 59 0 1 0 0 0 0 0 0 0 0 0 0 4 5130 5 53 1 0 0 0 0 0 0 0 0 2 0 0 2 5131 6 62 4 1 0 0 0 10 2 0 0 1 0 0 5 23132 4 41 3 1 1 0 0 5 0 0 1 1 0 0 4 16133 6 60 6 1 0 2 0 6 0 0 0 4 0 0 2 21134 3 56 2 0 0 1 0 0 0 0 0 0 0 0 2 5135 6 6 3 0 0 0 11 0 5 0 3 0 0 6 34136 5 64 2 5 1 1 3 3 0 0 0 1 3 0 0 19137 6 5 0 0 0 0 1 0 0 0 0 5 0 11138 3 1 0 0 0 0 1 0 0 0 1 0 0 3139 5 1 0 0 0 0 5 0 0 1 0 0 0 1 8140 5 51 3 2 0 0 0 0 1 0 1 1 1 0 3 12141 6 49 1 0 0 0 0 0 0 0 0 4 0 0 4 9142 5 76 2 3 1 1 0 1 1 2 2 0 1 0 1 15143 3 59 2 1 1 0 0 0 0 0 2 0 1 0 2 9144 1 49 0 0 1 1 0 0 1 3 0 1 0 0 1 8145 +

146 4 48 5 3 0 0 0 8 0 0 1 0 0 0 17147 4 1 2 0 0 0 1 0 0 0 1 0 0 2 7148 4 52 1 1 0 0 0 0 0 0 1 2 2 0 4 11




A B C D E F G H I_ J K L M Rec'md149 3 64 0 0 0 0 0 4 0 0 0 0 0 0 3 7150 8 66 0 0 0 0 0 3 0 0 3 1 2 0 7 16151 5 40 2 0 0 0 0 3 0 1 0 2 2 0 4 14152 3 50 0 0 0 0 0 0 0 0 1 1 0 0 3 5153 6 60 2 2 0 0 0 4 0 0 0 3 0 0 5 16154 5 54 0 4 0 0 0 0 0 0 1 3 0 0 4 12155 4 44 3 0 0 0 0 0 1 1 0 1 0 0 1 7156 4 38 4 1 0 0 0 1 1 1 0 0 0 0 8157 3 62 2 0 0 0 0 5 1 0 1 1 0 0 3 13158 2 52 1 0 0 0 0 0 0 0 0 0 0 0 0 1159 1 73 0 0 0 0 0 0 0 1 0 1 0 0 1 3160 4 4 2 1 0 0 1 2 0 0 2 1 0 13n 157 124 157 157 157 157 157 157 157 157 157 157 157 157 144 157sum 701 6622 263 254 30 32 12 457 90 52 76 203 122 3 360 1954

mean 4.5 53.4 1.7 1.6 0.2 0.2 0.1 2.9 0.6 0.3 0.5 1.3 0.8 0.0 2.5 12.4min 1 15 0 0 0 0 0 0 0 0 0 0 0 0 0 1max 10 78 7 15 4 4 3 18 7 5 4 6 5 1 7 34st.dev. 1.6 11.4 1.6 2.2 0.5 0.5 0.4 3.5 1.1 0.7 0.8 1.3 1.1 0.1 1.7 6.6* Evaluation not completed+ Duplicate householdA - Leaking sprinkler heads/pipesB - Incorrect sprinkler head-size/unmatched ratesC - Turf & plant beds on same zoneD - Mixed spray & rotor heads in same zoneE - Need drip irrigation in plant bedF - Unnecessary sprayheads need to be cappedG - Improper sprinkler head angle/directionH - Improper sprinkler head spacingI - Controller not functioning or not used correctlyJ - Shrub/turf interfer with sprinkler headsK - Ground cover inappropriateL - System pressureM - Zones with improper time settings


APPENDIX A, TABLE A-3. DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' IRRIGATION WATER USE ESTIMATES DERIVED FROM IRRIGATION SYSTEM EVALUATIONS.

Estimated Irrigation Water (gals/cycle) Estimated Irrigation Water (gals/day) **House After Changes Made Difference (Existing - After) After Changes Made Difference (Existing - After)No. Existing W/ Time W/ Other W/ Time IW Time W/ Other W/ Time Existing W/ Time W/ Other W/ Time W/ Time W/ Other W/ Time

Changes Changes & Other Changes Changes & Other Changes Changes & Other Changes Changes & Other1 3019 1609 2521 1111 1410 498 1908 794 423 663 292 371 131 5022 3669 2547 3579 2457 1122 90 1212 965 670 941 646 295 24 3193 1034 1034 884 884 0 150 150 272 272 232 232 0 39 394 3334 2500 2954 2120 834 380 1214 877 657 777 558 219 100 3195 622 521 576 475 101 46 147 164 137 151 125 27 12 396 2718 2718 2596 2596 0 122 122 715 715 683 683 0 32 327 #8 1776 1268 1638 1130 508 138 646 467 333 431 297 134 36 1709 2287 1916 1628 1257 371 659 1030 601 504 428 331 98 173 27110 2680 2297 2219 1836 383 461 844 705 604 584 483 101 121 22211 1852 993 1815 956 859 37 896 487 261 477 251 226 10 23612 #13 1672 1225 1640 1193 447 32 479 440 322 431 314 118 8 12614 2019 1807 2012 1800 212 7 219 531 475 529 473 56 2 5815 1290 1039 1204 953 251 86 337 339 273 317 251 66 23 8916 2628 1953 2577 1902 675 51 726 691 514 678 500 178 13 19117 6871 3435 6723 3287 3436 148 3584 1807 903 1768 864 904 39 94318 1175 875 1248 948 300 -73 227 309 230 328 249 79 -19 6019 2393 1787 2200 1594 606 193 799 629 470 579 419 159 51 21020 1189 1052 1169 1032 137 20 • 157 313 277 307 271 36 5 4121 822 822 755 755 0 67 67 216 216 199 199 0 18 1822 2938 1931 3386 2379 1007 -448 559 773 508 890 626 265 -118 14723 538 328 538 328 210 0 210 141 86 141 86 55 0 5524 3264 2080 3107 1923 1184 157 1341 858 547 817 506 311 41 35325 1424 1363 1424 1363 61 0 61 374 358 374 358 16 0 1626 3084 2277 2741 1934 807 343 1150 811 599 721 509 212 90 30227 1895 1353 1895 1353 542 0 542 498 356 498 356 143 0 14328 4008 2711 3997 2700 1297 11 1308 1054 713 1051 710 341 3 34429 2358 1806 2301 1749 552 57 609 620 475 605 460 145 15 160

30 789 646 783 640 143 6 149 207 170 206 168 38 2 3931 1104 1109 1062 1067 -5 42 37 290 292 279 281 -1 11 1032 1879 1427 1442 990 452 437 889 494 375 379 260 119 115 23433 1795 1403 1717 1325 392 78 470 472 369 452 348 103 21 12434 2777 2476 2679 2378 301 98 399 730 651 705 625 79 26 10535 1479 1479 1318 1318 0 161 161 389 389 347 347 0 42 4236 1995 1606 1973 1584 389 22 411 525 422 519 417 102 6 10837 2673 2100 2380 1807 573 293 866 703 552 626 475 151 77 22838 2024 1890 2024 1890 134 0 134 532 497 532 497 35 0 3539 2106 1846 2106 1846 260 0 260 554 485 554 485 68 0 6840 1624 1624 1421 1421 0 203 203 427 427 374 374 0 53 5341 2867 1899 2799 1831 968 68 , 1036 754 499 736 482 255 18 27242 1610 1039 1562 991 571 48 619 423 273 411 261 150 13 16343 1289 1098 1234 1043 191 55 246 339 289 325 274 50 14 65


APPENDIX A, TABLE A-3. (CONTINUED)

Estimated Irrigation Water (gals/cycle) Estimated Irrigation Water (gals/day) **House After Changes Made Difference (Existing -After) After Changes Made Difference (Existing - After)No. Existing W/ Time W/ Other W/ Time W/ Time W/ Other W/ Time Existing W/ Time W/ Other W/ Time W/ Time W/ Other W/ Time

Changes Changes & Other Changes Changes & Other Changes Changes & Other Changes Changes & Other44 3366 2787 3091 2512 579 275 854 885 733 813 661 152 72 22545 2563 2485 2563 2485 78 0 78 674 654 674 654 21 0 2146 850 683 850 683 167 0 167 224 180 224 180 44 0 4447 3957 3305 3929 3277 652 28 680 1041 869 1033 862 171 7 17948 #49 2180 1184 1900 904 996 280 1276 573 311 500 238 262 74 33650 1174 1022 1174 1022 152 0 152 309 269 309 269 40 0 4051 1306 830 1134 658 476 172 648 343 218 298 173 125 45 17052 5980 4144 5305 3469 1836 675 2511 1573 1090 1395 912 483 178 66053 1371 896 1165 690 475 206 681 361 236 306 181 125 54 17954 4862 2399 4526 2063 2463 336 2799 1279 631 1190 543 648 88 73655 2346 1572 2346 1572 774 0 774 617 413 617 413 204 0 20456 975 866 935 826 109 40 149 256 228 246 217 29 11 3957 2760 2760 2280 2280 0 480 480 726 726 600 600 0 126 12658 1107 1107 994 994 0 113 113 291 291 261 261 0 30 3059 4925 2545 4476 2096 2380 449 2829 1295 669 1177 551 626 118 74460 1990 1238 1935 1183 752 55 807 523 326 509 311 198 14 21261 1227 1227 1175 1175 0 52 52 323 323 309 309 0 14 1462 1343 1092 1343 1092 251 0 251 353 287 353 287 66 0 6663 3017 1957 2490 1430 1060 527 1587 793 515 655 376 279 139 41764 1364 920 1138 694 444 226 670 359 242 299 183 117 59 17665 1562 977 1401 816 585 161 746 411 257 368 215 154 42 19666 2138 2261 1790 1913 -123 348 225 562 595 471 503 -32 92 5967 #68 2234 1951 1978 1695 283 256 539 588 513 520 446 74 67 14269 6015 3008 5753 2746 3007 262 3269 1582 791 1513 722 791 69 86070 5371 3600 5195 3424 1771 176 1947 1412 947 1366 900 466 46 51271 2181 2181 1349 1349 0 832 832 574 574 355 355 0 219 21972 1878 1530 1732 1384 348 146 494 494 402 455 364 92 38 13073 1852 1088 1674 910 764 178 942 487 286 440 239 201 47 24874 3654 2385 3006 1737 1269 648 1917 961 627 791 457 334 170 50475 1615 1332 1560 1277 283 55 338 425 350 410 336 74 14 8976 2732 2019 2659 1946 713 73 786 718 531 699 512 188 19 20777 1738 1738 1663 1663 0 75 75 457 457 437 437 0 20 2078 2985 2173 2736 1924 812 249 1061 785 571 720 506 214 65 27979 1939 1645 1724 1430 294 215 509 510 433 453 376 77 57 13480 1353 1215 1144 1006 138 209 347 356 320 301 265 36 55 9181 1706 1374 1706 1374 332 0 332 449 361 449 361 87 0 8782 2430 1483 2344 1397 947 86 1033 639 390 616 367 249 23 27283 1861 895 1653 687 966 208 1174 489 235 435 181 254 55 30984 1473 1345 1561 1433 128 -88 40 387 354 411 377 34 -23 1185 3198 3124 3102 3028 74 96 170 841 822 816 796 19 25 4586 *



Estimated Irrigation Water (gals/cycle) Estimated Irrigation Water (gals/day) **House After Changes Made Difference (Existing -After) After Changes Made Difference (Existing - After)No. Existing W/Time W/ Other W/ Time W/ Time W/ Other W/ Time Existing W/Time W/ Other W/ Time W/ Time W/ Other W/ Time

Changes Changes & Other Changes Changes & Other Changes Changes & Other Changes Changes & Other87 840 457 896 513 383 -56 327 221 120 236 135 101 -15 8688 1781 1526 1781 1526 255 0 255 468 401 468 401 67 0 6789 2885 1853 2814 1782 1032 71 1103 759 487 740 469 271 19 29090 3969 3969 3263 3263 0 706 706 1044 1044 858 858 0 186 18691 2530 1859 2130 1459 671 400 1071 665 489 560 384 176 105 28292 1544 1544 1182 1182 0 362 362 406 406 311 311 0 95 9593 #94 2123 1134 2123 1134 989 0 989 558 298 558 298 260 0 26095 1529 1529 1409 1409 0 120 120 402 402 371 371 0 32 3296 1496 1873 902 1279 -377 594 217 393 493 237 336 -99 156 5797 805 383 805 383 422 0 422 212 101 212 101 111 0 11198 874 646 874 646 228 0 228 230 170 230 170 60 0 6099 #100 596 616 557 577 -20 39 19 157 162 146 152 -5 10 5101 547 765 158 376 -218 389 171 144 201 42 99 -57 102 45102 1182 1182 1151 1151 0 31 31 311 311 303 303 0 8 8103 749 799 725 775 -50 24 -26 197 210 191 204 -13 6 -7104 5206 5206 3196 3196 0 2010 2010 1369 1369 840 840 0 529 529105 2756 1290 2756 1290 1466 0 1466 725 339 725 339 386 0 386106 2383 1962 2633 2212 421 -250 171 627 516 692 ·582 111 -66 45107 #108 895 620 884 609 275 11 286 235 163 232 160 72 3 75109 +110 1514 1555 1317 1358 -41 197 156 398 409 346 357 -11 52 41111 708 1307 633 1232 -599 75 -524 186 344 166 324 -158 20 -138112 1324 1011 1324 1011 313 0 313 348 266 348 266 82 0 82113 3317 2344 2658 1685 973 659 1632 872 616 699 443 256 173 429114 3152 2208 2940 1996 944 212 1156 829 581 773 525 248 56 304115 2103 1449 2067 1413 654 36 690 553 381 544 372 172 9 181116 1872 1726 1686 1540 146 186 332 492 454 443 405 38 49 87117 1348 1205 1419 1276 143 -71 72 355 317 373 336 38 -19 19118 2067 1951 2082 1966 116 -15 101 544 513 548 517 31 -4 27119 1245 920 931 606 325 314 639 327 242 245 159 85 83 168120 1145 1056 1097 1008 89 48 137 301 278 288 265 23 13 36121 3146 2339 2775 1968 807 371 1178 827 615 730 518 212 98 310122 1901 1706 1790 1595 195 111 306 500 449 471 419 51 29 80123 #124 764 669 714 619 95 50 145 201 176 188 163 25 13 38125 4222 2639 4222 2639 1583 0 1583 1110 694 1110 694 416 0 416126 5817 3430 4517 2130 2387 1300 3687 1530 902 1188 560 628 342 970127 1099 801 1129 831 298 -30 268 289 211 297 219 78 -8 70128 2807 2702 2143 2038 105 664 769 738 711 564 536 28 175 202129 2040 1529 2048 1537 511 -8 503 536 402 539 404 134 -2 132



Estimated Irrigation Water (gals/cycle) Estimated Irrigation Water (gals/day)"House After Changes Made Difference (Existing - After) After Changes Made Difference (Existing - After)No. Existing W/Time W/Other W/ Time W/Time W/ Other W/ Time Existing W/Time W/ Other W/ Time W/ Time W/ Other W/ Time

Changes Changes & Other Changes Changes & Other Changes Changes & Other Changes Changes & Other130 1611 1372 1650 1411 239 -39 200 424 361 434 371 63 -10 53131 3006 2646 2670 2310 360 336 696 791 696 702 607 95 88 183132 1948 1350 1797 1199 598 151 749 512 355 473 315 157 40 197133 2964 2565 2624 2225 399 340 739 779 675 690 585 105 89 194134 1305 1004 1219 918 301 86 387 343 264 321 241 79 23 102135 2352 2308 1958 1914 44 394 438 619 607 515 503 12 104 115136 2950 2950 1793 1793 0 1157 1157 776 776 472 472 0 304 304137 #138 #139 2572 2382 2262 2072 190 310 500 676 626 595 545 50 82 131140 2658 1962 2381 1685 696 277 973 699 516 626 443 183 73 256141 1908 1217 1908 1217 691 0 691 502 320 502 320 182 0 182142 2845 2322 1916 1393 523 929 1452 748 611 504 366 138 244 382143 1315 1002 1148 835 313 167 480 346 264 302 220 82 44 126144 918 612 778 472 306 140 446 241 161 205 124 80 37 117145 +146 #147 3003 2348 2843 2188 655 160 815 790 617 748 575 172 42 214148 1746 1358 1476 1088 388 270 658 459 357 388 286 102 71 173149 1986 1314 1939 1267 672 47 719 522 346 510 333 177 12 189150 2644 2891 1964 2211 -247 680 433 695 760 517 581 -65 179 114151 5416 3232 5397 3213 2184 19 2203 1424 850 1419 845 574 5 579152 1540 619 1540 619 921 0 921 405 163 405 163 242 0 242153 2570 1624 2492 1546 946 78 1024 676 427 655 407 249 21 269154 2263 2126 2193 2056 137 70 207 595 559 577 541 36 18 54155 700 661 700 661 39 0 39 184 174 184 174 10 0 10156 #

157 2384 1590 2139 1345 794 245 1039 627 418 563 354 209 64 273158 514 514 514 514 0 0 0 135 135 135 135 0 0 0159 808 538 808 538 270 0 270 212 141 212 141 71 0 71160 #n 144 144 144 144 144 144 144 144 144 144 144 144 144 144sum 317355 243499 290146 216290 73856 27209 101065 83460 64037 76304 56881 19423 7156 26579mean 2204 1691 2015 1502 513 189 702 580 445 530 395 135 50 185min 514 328 158 328 -599 -448 -524 135 86 42 86 -158 -118 -138max 6871 5206 6723 3469 3436 2010 3687 1807 1369 1768 912 904 529 970st.dev. 1220.9 839.8 1121.0 709.0 617.8 288.4 704.4 321.1 220.9 294.8 186.5 162.5 75.9 185.3

* Evaluation not completed+ Duplicate household# Evaluation report missing irrigation water use estimates.* Based on two watering cycles per week.


APPENDIX B

DAVIS ISLAND STUDY HOUSEHOLDS' QUESTIONNAIRESAND RESPONSES

®M8 CITY OF TAMPASandra W. Freedman, Mayor water Department

David L. Tippin, P.E.Director

December 8, 1994

Dear Resident:

Thank you for participating in the City of Tampa Water Department Sensible SprinklingIrrigation Evaluation Program. Your household was one of 160 Davis Island homes thatparticipated in this voluntary initiative.

The City of Tampa is committed to finding ways to conserve our valuable waterresources. One way to accomplish this would be to reduce wasteful landscapewatering. If every household in the City of Tampa were to improve their outdoor wateruse efficiency and reduce landscape water use by 25 percent, we could potentiallysave over one million gallons of water per day or 365 million gallons per year. Thesewater savings are significant!

The attached questionnaire was developed to assess your satisfaction with theSensible Sprinkling Irrigation Evaluation Program and to help estimate the quantity ofwater saved by households that participated in the program.

The City of Tampa appreciates your participation in our program. Please be sure totake a few minutes to complete the attached questionnaire and return it to us in theenclosed pre-paid envelope.

Sincerely,

Neil MingledorffWater Conservation Coordinator

end: questionnaire

All-America City

|lo! J9 City Hall Plaza * Tmpa, Florida 33602 0 813/274-8663

19 0 Printed on Recycled Paper Exhibit B-1

Page 1 of 5

City of Tampa Water DepartmentSprinkler System Evaluation Program Participant Questionnaire

This questionnaire is designed to give us information about your residence so that we may betterdetermine the success of the City's Sensible Sprinkling Program. Please answer these questions tothe best of your knowledge and return the completed questionnaire in the pre-paid, self-addressedenvelope as soon as possible.

1. Rate your overall satisfaction with the irrigation evaluation program on a scale of one to ten (circle one).not satisfied very satisfied1 2 3 4 5 6 7 8 9 10

2. Rate how understandable your irrigation evaluation report was on a scale of one to ten (circle one).not understandable very understandable1 2 3 4 5 6 7 8 9 10

3. Rate how realistic it was to implement the changes recommended for your sprinkler system on a scale ofone to ten (circle one).

not realistic very realistic1 2 3 4 5 6 7 8 9 10

4a. With regard to irrigation watering times, have you implemented any of the recommended changes outlinedin the irrigation evaluation report? (circle one)

Yes No Unknown None recommended

4b. If yes, please indicate the approximate date irrigation watering time changes were made and the percent ofrecommended changes that you have implemented?

month year

0% o 25% 50% 75% 100% N/A None recommended

4c. If you did not implement the irrigation watering time changes recommended, which of the following bestindicates the reasons why. (Circle all that apply)

A) Don't know how to adjust time clockB) Recommendations were too technicalC) Planning to make the changes, but haven't had the timeD) Don't know who to call to make the changesE) Don't agree with the recommendationsF) Landscape company advised otherwiseG) OtherH) What would be an incentive for you to make the changes:

a) A follow up visit to review recommendationsb) Other

Exhibit B-1Page 2 of 5

4d. Prior to the irrigation evaluation, where did you get your information on how long to run the timer?

Landscape company Decided yourselfIrrigation contractor Neighbor

County extension service Already set when purchased houseOther

5. Did you install the free rain shut-off switch that was offered? (circle one)Yes No Already Have One Manual SystemIf no, please indicate why

6. Have you made any of the changes recommended with regard to replacing your existing landscape/plantstock? (circle one)


7a. With regard to your particular irrigation system's design and condition, have you implemented any of thespecific changes recommended in the irrigation evaluation report (e.g., prune turf or landscapeinterference, cap nozzles, repair leaks or broken sprinkler heads)? (circle one)


7b. If yes, please indicate the approximate date recommended irrigation system changes were made and thepercent of recommended changes that you have implemented?

month year

0% 25% 50% 75% 100% N/A None recommended

7c. If yes, were the changes to your irrigation system's design and condition made by you or a contractor?homeowner contractor

7d. If yes, which of the following changes did you make to the irrigation system and/or landscaping? (circle allthat apply)

A) Repaired leaking or broken sprinklers and/or pipesB) Changed sprinklers or nozzles for correct sizeC) Divided zone(s) into separate turf and plant bed zonesD) Matched sprinkler types (spray or rotor) in same zoneE) Changed sprinklers to drip irrigation in plant bed(s)F) Capped off spray headsG) Adjusted sprinklers for proper angle or directionH) Moved sprinkler to a new location for proper spacingI) Replaced controller with a new multi-programmable oneJ) Pruned turf or shrub interference around sprinklersK) Changed ground cover or shrubs as recommendedL) Reduced turf areasM) Used Xeriscape principles to re-landscape a portion of yardN) Used Xeriscape principles to re-landscape all of yard

7e. If yes, what were the approximate costs to make changes to your irrigation system and/or landscaping?


7f. If you did not implement recommended irrigation system changes, which of the following best indicates thereasons why. (circle all that apply)

A) Too expensiveB) Recommendations were too technicalC) Planning to make the changes, but haven't had the timeD) Don't know who to call to make the changesE) Don't agree with the recommendationsF) Landscape company advised otherwiseG) OtherH) What would be an incentive for you to make the changes:

a) A follow up visit to review recommendationsb) Providing a list of contractors to do the workc) Providing a list of stores that provide the partsd) Provide a rebate for irrigation components -What dollar amount would be an incentive to make the repairs?

$50 _$100 _$200 Other $e) Provide a rebate for the labor to have a contractor do the repairsf) Other

8. Compared to the conditions prior to making the changes, the landscape looks?Better Same Worse

9. Would you like for us to make a follow up visit to review the recommendations made in the report and/orthe changes you have made? _ Yes No

(If yes, write your name, address and phone number at the bottom of this questionnaire)

10. What suggestions do you have to improve this program?

The questions below are designed to assist us in characterizing the types of households thatparticipated in the Sprinkler System Evaluation Program. We would appreciate you answering themto the best of your knowledge.

11. Do you have a separate lawn meter? _ Yes No

12. Indicate the date, if known, that your irrigation system was installed? 19Unknown Here when purchased house

13. Was the irrigation system installed by yourself or by a contractor?Self Contractor Don't Know

14. Do you maintain your landscape or hire a landscape company?_ Self maintained _ Landscape company


15. How long have you lived in your present home? Since 19

16. What year was your home built? 19

17. How many people live in your home? (Circle one)1 2 3 4 5 6 More than 6

18. Indicate the number of persons in each age group?Less than 2 yrs_ 3-12 yrs_ 13-18 yrs 19-40 yrs_ 41-60 yrs__ 61 yrs+

19. Indicate the number of water-using fixtures and appliances that are in your home:

Dishwasher Shower/Tub(s)Garbage Disposal Toilet(s)Clotheswasher Pool or JacuzziWater softener

20. Are any of the water-using fixtures and/or appliances (listed above) water conserving models?Yes No Unknown

If yes, please note the specific fixture (e.g., toilet) and brand (if known)

21. What is your average household annual income range? (Circle one)

A Less than $5,000 F $45,000 - $54,999B $5,000- $14,999 G $55,000 - $64,999C $15,000 - $24,999 H $65,000 - $74,999D $25,000 - $34,999 I $75,000 - $84,999E $35,000 - $44,999 J Greater than $85,000

Jj3 mV UWM uyOi liU, V&" . yo"UA WvpwnM&, a"M, p4WJ apimaý .


MP CITY OF TAMPASandra W. Freedman, Mayor water Department

•' David L. Tippin, 1'E.

Director

January 12, 1995

Dear Resident:

The City of Tampa is committed to finding ways to conserve our valuable waterresources. One way to accomplish this would be to reduce wasteful landscapewatering. If every household in the City of Tampa were to improve their outdoor wateruse efficiency and reduce landscape water use by 25 percent, we could potentiallysave over one million gallons of water per day or 365 million gallons per year. Thesewater savings are significant!

The City of Tampa Water Department has developed a Sensible Sprinkling IrrigationEvaluation Program and we need data from households on the city water system tobetter assess the potential water savings from such a program as well as the likelihoodthat residents would participate in this voluntary initiative.

Please complete the attached questionnaire so that we can estimate the quantity ofwater used to maintain landscapes at homes such as yours and to assess the feasibilityof implementing the Sensible Sprinkling Irrigation Evaluation Program for the entire citywater supply service area.

The City of Tampa appreciates your participation in filling out this questionnaire. Itshould only take a few minutes to complete and we have enclosed a pre-paid returnenvelope for your convenience.

Sincerely,

Neil MingledorffWater Conservation Coordinator

end: questionnaireb:ccovl.doc

All-America City

jiIo I City Hall Plaza * Tampa, Florida 33602 0 813/274-8663

Printed on Recycled Paper Exhibit B-2Page 1 of 3

City of Tampa Water Department Questionnaire

This questionnaire is designed to give us information about your residence so that we may betterassess the potential for continuation of a City sponsored Sensible Sprinkling Program. Pleaseanswer these questions to the best of your knowledge and return the completed questionnaire in thepre-paid, self-addressed envelope as soon as possible.

1. Do you have an inground landscape irrigation system? Yes No

If no. skip to question #10.

2. If you have an inground landscape irrigation system, is it automatic or manual?Automatic Manual Unknown

If your system is manual or unknown, skip to question #5.

3. Where did you get information on how long to run the timer for your automatic irrigation system?

Landscape company Decided yourselfIrrigation contractor Neighbor

County extension service Already set when purchased houseOther

4. Would you install a free rain shut-off switch if one was offered and if your automatic irrigation system couldbe retrofitted?

Yes No Already Have One Unknown

5. When was your inground landscape irrigation system installed? 19Unknown Here when purchased house

6. Was your inground landscape irrigation system installed by yourself or by a contractor?Self Contractor Don't Know

7. Do you have a separate lawn meter for your irrigation system?Yes No I Unknown

8. Would you be interested in a free landscape irrigation evaluation to determine the efficiency of yourexisting system?

Yes No Unknown

9. Would you be willing to make changes to your irrigation system and/or landscaping in order to make it moreefficient and reduce the quantity of water used?

Yes No Unknown

9a. If yes, which of the following changes to the irrigation system and/or landscaping would you be willing tomake, if recommended? (circle all that apply)


A) Repair leaking or broken sprinklers and/or pipesB) Change sprinklers or nozzles for correct sizeC) Divide zone(s) into separate turf and plant bed zonesD) Match sprinkler types (spray or rotor) in same zoneE) Change sprinklers to drip irrigation in plant bed(s)F) Cap off spray headsG) Adjust sprinklers for proper angle or directionH) Move sprinkler to a new location for proper spacingI) Replace controller with a new multi-programmable oneJ) Prune turf or shrub interference around sprinklersK) Change ground cover or shrubs as recommendedL) Reduce turf areasM) Use Xeriscape principles to re-landscape a portion of yardN) Use Xeriscape principles to re-landscape all of yardO) Reset timeclock for new irrigation schedule

10. Do you maintain your landscape or hire a landscape company?SSelf maintained Landscape company

11. How long have you lived in your present home? Since 19(Month) (Year)

12. What year was your home built? 19

13. How many people live in your home? (Circle one)1 2 3 4 5 6 More than 6

14. Indicate the number of persons in each age group?Less than 2 yrs 3-12 yrs 13-18 yrs _ 19-40 yrs 41-60 yrs 61 yrs+

15. Indicate the number of water-using fixtures and appliances that are in your home:

Dishwasher Shower/Tub(s)Garbage Disposal Toilet(s)Clotheswasher Pool or JacuzziWater softener

16. What is your average household annual income range? (Circle one)

A Less than $5,000 F $45,000 - $54,999B $5,000 - $14,999 G $55,000 - $64,999C $15,000-$24,999 H $65,000 -$74,999D $25,000 - $34,999 I $75,000 - $84,999E $35,000 - $44,999 J Greater than $85,000

Jrwn vaun i6i nU w ww,. w4I/ WWWM, A& o/ioau appvecicda .


APPENDIX B, TABLE B-1A. DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' QUESTIONNAIRE RESPONSES (Questions 4d and 11-21, excluding open comment questions).

Q4d Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21House Survey 3- 13-19- 41-

No. Ret'md LC IC ES S N AS O Y N Date U PIP S C U S LC Date Year 1 2 3 4 5 6 6+ <2 12 18 40 60 61 DWGD CWWS ST T P/J Y N U A B C D E F G H I J1 02 1 0 0 0 0 00 1 0 1985 0 01 0 1 Apr-73 1955 0 1 0 0 0 00 0 0 0 0 2 1 0 1 0 2 3 0 0 1

3 04 1 10 0 0 0 0 010 19860 000 1 0 1 Jan-92 1926 0 0 1 0 0 00 0 0 1 2 01 11 0 4 6 0 10 0

5 1 0 0 1 0 0 0 0 1 19830 0 1 0 0 0 1 Jun-65 1965 0 1 0 0 0 0 0 0 0 0 0 2 1 0 1 0 3 3 0 0 1 0 00 0 1 0 0 0 0 0 0

6 1 1 0 0 0 0 0 0 1 0 19760 0 0 1 0 1 1 Aug-7211947 0 1 0 0 000 00 0 0 0 2 11 1 0 2 3 1 0 1 000 0 0 0 0 0 0 1 07 1 0 0 0 0 1 0 0 1 19850 000 1 Jan-6911959 1 0 0 0 0 00 0 0 00 1 0 11 1 0 2 2 10 1 0 0 0 0 0 1 0 0 0 0

8 09 010 011 012 1 0 0 0 0 0 1 0 0 1 Jan-90 1 1 0 3 4 1 1 0 013 1 0 0 0 1 0 0 0 0 1 1989 0 0 0 1 0 0 1 Feb-91 1954 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 4 3 1 1 0 0 0 0 0 0 0 0 0 00 114 015 016 1 1 0 0 0 0 1 0 1 0 1 0 0 0 1 0 1 Feb-93 1950 0 0 0 1 0 0 0 0 2 0 2 0 0 1 1 1 0 3 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 117 018 019 1 1 0 0 0 0 0 0 0 1 19730 0 0 1 0 0 1 Nov-73 1973 0 0 1 0 00 0 0 0 1 0 1 1 1 1 1 0 3 4 0 0 1 020 1 0 1 0 0 121 1 1 1 0 0 0 0 0 0 1 19900 0 1 0 11 Oct-81 1935 0 1 0 0 0 0 0 1 0 0 0 1 01 1 1 0 2 2 00 1 00 00 0 1 0 0 0 0 0 022 1 1 0 0 0 0 0 1 0 19870 0 1 0 0 1 Jan-86 19400 0 0 1 0 0 0 00 2 0 0 2 0 1 1 03 4 1 10 023 024 1 1 0 0 1 0 0 0 1 0 1 0 0 01 Jan-51 1955 0 1 0 0 0 0 0 0 0 0 2 1 11 0 1 1 10 1 025 1 0 1 0 0 0 1 0 1984 0 0 0 1 0 0 1 Jan-61 1961 0 1 0 0 0 0 0 0 0 0 0 2 1 1 1 0 2 3 1 1 0 0 0 0 0 0 0 1 0 0 0 026 027 028 1 0 0 1 0 0 0 1 1984 0 0 01 0 0 1 Oct-59 1958 1 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 2 2 0 1 0 0

29 1 1 0 1 0 0 0 0 1 0 19930 0 0 1 0 0 1 Mar-93 1993 0 0 0 1 0 0 2 1 1 1 0 1 1 1 0 5 6 1 1 0 0 0 0 0 0 0 0 0 0 1

30 031 1 1 0 0 0 0 0 0 1 19930 0 0 1 0 1 0 Jun-93 1978 0 0 0 1 0 0 0 2 0 0 2 0 0 1 1 0 2 2 0 1 0 0 0 0 0 0 0 0 1 0 032 1 10 000 0 1 0 19910 0 0 1 0 0 1 Aug-91 19910000 1 0 0 030 2 0 1 2 1 05 5 1 1 00000000000133 1 0 1 0 0 0 0 1989 0 0 0 1 0 0 1 Jan-8 1954 0 0 0 1 0 0 0 0 2 0 2 0 0 1 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 134 035 1 0 1 0 0 0 0 0 1 0 1992 0 0 0 1 0 1 Jan-481948 1 0 0 0 0 0 0 00000 1 1 0 1 0 2 2 0 0 1 036 037 1 0 00 1 000 01 0 1 0 1 0 1 Jan-9119350 0 1 0 0 0 0 0 0 2 0 1 1 1 3 3 1 1 00000-00000 138 039 1 1 000 1 0 0 Apr-91 19881 0 0 0 0 0 0 1 1 2 1 1 4 4 1 0 1 0 0 0 000000 140 1 0 00 1 000 1 0 1982 0 0 01 00 1 Jan-59 19590 1 0 0 0 0 0 1 1 0 2 3 1 0 1 0 00000 1 0 0 0 041 1 0 0 0 0 0 0 1 0 19870 0 0 1 0 0 1 Jan-87 1987 0 0 1 0 0 0 0 000 1 0 2 0 1 1 0 4 4 1 0 1 0 0 0 0 0 0 0 0 00 142 043 1 0 0 1 0 0 0 1 1 0 1985 0 0 0 1 0 0 1 Jan-39 1939 1 0 0 0 0 0 0 0 00 00 0 10 0 1 0 2 2 0 0 1 0 01 0 0 0 0 0 0 0 044 1 1 1 0 0 0 0 0 1 19620 0 10 1 0 Dec-61 19250 10 0 000 00000 2 1 1 03 3 0 1 0 00000 1 0 00045 046 1 000 1 0 0 0 1 0 0 10 0 1 1 0 Jun-93 19710 1 0 0 0 0 00 000 2 0 1 1 1 0 1 1 1 0 1 0 0 0 0 0 0 0 00 1 047 048 1 0 1 1986 0 0 0 1 0 1 0 Oct-86 1950 1 0 0 0 0 0 0 0 0 00 1 0 1 0 3 4 0 0 0 1 0 0 0 1 0 0 0 0 0 049 050 1 0 1 0 0 0 0 0 0 1 1990 0 0 0 1 0 1 0 Jun-90 19600 1 0 0 0 0 0 000002 1 1 1 0 2 2 00 00 151 0

52 1 1 0 0 0 0 0 0 1 0 19650 00 0 1 0 01 Jan-6319460 1 0 0 0 0 0 0 10 0 0 0 2 1 0 2 5 10 1 053 054 055 056 1 1 0 0 0 0 0 0 1 0 19900 0 0 1 0 0 1 May-94 19400 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 1 1 0 1 0 057 0

TABLEB1A.XLSPage 1 of 3

APPENDIX B, TABLE B-1A. (CONTINUED)

Q4d Qll Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21

House Survey 3- 13- 19- 41-

No. Ret'rnd LC IC ES S N AS O Y N Date U PIP S C U S LC Date Year 1 2 3 4 5 6 6+ <2 12 18 40 60 61 DWGDCWWS SI T PIJ Y N U A B C D E F G H I J

58 059 060 1 0 0 0 1 1 0 Nov-93 1958 0 0 0 1 0 0 0 0 0 2 0 2 0 1 1 1 0 1 1 10 0 1

61 062 063 064 065 1 0 0 1 0 0 0 1 0 1 0001 01 May-92 1936 0 0 1 0 0 0 0 0 0 1 0 2 0 1 1 1 0 3 4 1 0 0 1 0 0 0 0 0 0 0 0 1

66 067 068 069 1 0 1 0 0 0 0 0 1 0 1989 0 0 0 1 0 0 1 Oct-89 1939 0 1 0 0 0 0 0 0 0 0 0 2 0 1 1 1 0 3 4 1 0 0 1 0 0 0 0 0 0 0 0 0 1

70 071 1 1 0 0 0 000 1 0 0 1 0 1 0 0 1 Jul-84 19600 0 0 1 0 0 0 0 1 1 0 2 0 1 1 1 1 4 4 1 0 1 00 0 0 0 0 0 00 01

72 1 0 1 0 0 0 0 0 1 19890 0 1 0 1 0 Apr-83 1976 0 00 1 0 0 0 0 1 1 0 2 01 1 1 03 3 11 0 0 0 00 0 0 0 0 0 0 1

73 074 1 0 0 1 0 0 0 1 0 0 1 0 010 1 Jan-88 1954 0 00 1 0 0 0 0 2 0 2 0 0 1 1 0 4 5 0 1 00

75 1 1 0 0 0 0 0 0 1 0 19890 0 0 1 0 0 1 Jan-58 1958 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 1 0 0 1 0

76 077 078 079 1 0 0 0 0 01 0 1 0 1 0 00 1 01 Jan-92 1960 0 1 0 0 0 0 0 0 0 0 2 0 0 1 0 1 0 2 2 2 1 0 0 0 0 0 0 0 0 0 0 0 1

80 1 1 0 0 0 0 0 0 1 0 19860 00 1 0 1 0 Jan-86 19860 0 1 0 0 0 0

81 082 1 0 0 0 0 1 0 1 0 01 0 1 01 Sep-91 1954 0 0 0 1 0 0 0 3 0 1 0 1 1 0 4 4 1 1 0 0 0 0 0 0 0 0 0 1 0

83 084 085 1 0 1 0 0 0 0 0 1 01 01988 0 01 0 Aug-71 19500 0 1 0 0 0 0 0 0 1 0 2 01 1 0 2 2 01 0 0 0 0 0 0 0 0 0 0 0 1

86+87 1 0 0 0 0 0 1 0 0 1 19870 0 00 0 1 1 0 Oct-93 1987 0 1 0 0 0 0 0 0 0 0 2 0 0 1 1 1 0 2 3 1 1 0 0

88 089 090 091 1 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 1 Oct-86 1954 0 1 0 0 0 0 0 0 00 0 2 0 1 1 1 0 3 3 0 0 1 0 0 0 0 0 0 0 0 0 0 1

92 1 0 0 0 1 0 00 1 0 19640 0 0 1 0 0 1 May-64 1963 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 4 4 10 0 1 0 0 0 0 0 0 0 0 1

93 094 095 1 1 1 0 0 0 0 0 1 0 19930 0 1 0 10 Jul-77 1960 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 2 2 0 0 0 0 0 1 0 00 0

96 097 1 0 0 0 1 0 0 0 1 0 19860 0 0 1 0 1 1 De-84 1954 0 1 0 0 0 0 0 0 0 0 02 0 1 1 1 0 2 2 0 1 00 0 0 0 0 0 0 1 0 0 0

98 099 1 1 0 0 1 00 1 10 Jan-91 1955 1 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 0 2 2 11 0 0 0 0 0 0 0 0 0 0 0 1

100 0101 1 0 0 1 0 0 0 01 19790 0 0 0 11 0 Aug-861974 0 0 0 1 0 0 0 0 2 0 2 0 01 1 0 3 3 10 1 00 0 00 0 0 0 1 0

102 0103 0104 0105 0 0 1 0 0 000 1 0 00 1 0 Aug-89 195500 0 0 1 0 0 0 1 1 0 2 0 0 1 1 1 0 2 3 1 1 00 0 0 0 0 0 1 00 0 0

106 1 1 0 0 00 0 1 0 19920 0 0 1 0 1 Jul-92 1950 0 0 0 1 0 0 0 0 2 0 2 0 0 1 1 1 0 4 5 1 1 0 00 0 0 0 0 0 0 0 0 1

107 1 0 0 0 1 0 00 0 1 19940 0 0 1 0 0 1 May-93 19500 0 0 0 1 0 0 0 3 0 2 0 0 1 0 1 0 2 2 0 1 0 0 0 0 000 0 0 0 0 1

108 1 1 0 0 0 0 0 0 1 0 19910 0 0 1 0 0 1 Dec-91 1991 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 3 3 1 1 0 0 0 0 0 0 0 0 0 1 0 0

109'110 1 0 0 0 0 1 0 1 0 1 0 0 1 0 0 Aug-91 1945 0 0 0 1 0 0 0 0 2 0 2 0 0 1 1 0 2 2 01 0 0 0 0 0 0 0 0 0 0 0 1

111 0112 0113 1 0 1 0 0 0 0 1 0 19870 0 0 1 01 0 Dec-84 1946 0 0 0 1 0 0 0 0 0 0 2 2 0 1 1 1 0 2 3 0 0 1 0 0 0 0 0 0 0 0 0 1 0114 1 1 0 0 0 0 0 00 1 0 1 0 0 1 Jan-70 1960 1 0 0 0 0 0 0 0 0 0 00 1 111 0 1 1 0 0 01 0 0 1 0 0 0 0 0 0

TABLEBA.XLSPage 2 of 3

APPENDIX B, TABLE B-1A. (CONTINUED)

Q4d QIl Q12 Q13 Q14 Q15 Q16 Q17 018 Q19 Q20 Q21


No. Ret'rndLC ICES S N AS O Y N Date U PIP S C U S LC Date Year 1 2 3 4 5 6 6+ <212 18 40 60 61 DWGDCWWSST T PIJY N U A B C D E F G H I J

115 1 0 0 0 0 1 0 0 1 0 1 0 0 1 0 1 Dec-931958 0 1 0 0 0 0 0 0 0 0 2 0 0 1 1 1 0 4 4 1 1 0 0 0 0 0 0 0 0 0 0 0 1

116 1 0 0 0 1 0 0 0 1 0 19860 0 0 1 0 1 0 Jan-84 1940 0 0 0 0 1 0 0 1 2 0 2 0 0 1 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1

117 0

118 0119 0120 0

121 1 0 0 0 1 0 0 0 0 1 19920 0 0 1 0 1 0 Nov-92 19551 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 2 2 1 0 1 0 0 0 0 0 0 1 0 0 0 0

122 0

123 0

124 1 1 0 0 0 0 0 0 1 19920 0 01 0 1 0 Jul-91 1941 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 2 2 1 1 0 0 0 0 0 0 0 1 0 0 0

125 1 0 0 0 1 6 0 0 0 1 0 0 1 0 1 Mar-87 1957 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 3 4 1 0 1 0

126 0

127 1 0 1 0 00 0 0Feb-78 1978 1 1 1 0 1 1 0 1 0 0

128 1 1 0 0 1 1 0 1 0 1 0 0 1 Jul-92 1925 0 0 1 0 0 00 2 0 0 1 0 1 0 2 3 0 1 0 0 0 0 0 0 0 0 0 0 0 1

129 1 0 0 0 1 0 0 0 1 0 0 1 0 1 0 1 0 Feb-92 1960 0 0 1 0 0 0 0 0 1 0 0 2 0 1 1 1 0 2 2 0 0 1 0 0 0 0 0 0 00 0 0 1

130 1 0 1 0 0 0 0 0 0 1 19850 0 01 0 1 0 11979 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 1 1 1 0 0 1 0 0 0 0 0 0 1 0 0 0

131 1 0 0 0 1 0 0 0 1 0 1 0 0 1 0 1 0 Jul-73 1951 1 0 0 0 0 0 0 1 0 1 0 2 2 0 1 0 0

132 0

133 1 0 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 Mar-93 19500 0 0 01 0 0 0 0 2 0 1 1 0 1 1 1 0 3 3 1 0 1 0 0 0 0 0 0 0 0 0 0 1

134 0

135 1 1 00 0 0 1 1980 0 00 0 11 1 Jul-93 1926 0 0 1 0 0 0 0 0 0 1 0 2 0 1 1 1 0 7 6 0 0 0 1 0 0 0 0 0 0 0 0 0 1

136 1 0 1 0 00 0 0 1 0 1 00 1 0 0 1 Jan-47 1945 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 0 2 5 0 0 1 0 0 0 0 0 0 0 0 0 0 1

137 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 1 Jan-75 1956 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0

138 0

139 0140 1 0 0 0 0 1 1 0 0 1 0 1 0 1 0 10 Aug-93 1948 1 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0

141 0142 1 1 0 0 0 0 0 1 0 0 1 0 1 0 0 1 Sep-91 19640 0 1 0 0 0 0 0 0 0 1 2 0 1 1 0 4 5 1 1 0 0 0 0 0 0 0 0 0 00 1

143 0144 0

145"

146 1 1 0 0 0 0 0 01 0 19880 0 0 1 0 10 Jan-88 1944 0 1 0 0 0 0 0 0 0 0 0 2 0 1 1 1 0 3 3 0 1 0 0

147 0148 0149 1 0 1 0 0 0 0 0 0 0 1 0 1 0 1 0 May-78 1959 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 2 2 0 0 1 0 0 0 0 0 0 0 0 0 1 0

150 0151 0152 0 1 0 0 0 0 0 10 19720 0 0 1 0 0 1 0ct-93 19720 0 1 0 0 0 0 1 1 0 1 0 1 1 1 0 2 2 1 0 1 0 0 0 0 0 0 1 0 0 0 0

153 0

154 1 0 0 0 1 0 0 0 1 0 1994 0 0 0 1 0 1 1 Aug-9319700 0 1 0 0 0 0 0 0 0 1 2 0 1 1 1 0 3 3 1 1 0 0 0 0 0 0 0 0 0 0 0 1

155 0

156 0

157 0158 0

159 1 0 0 0 1 0 0 01 0 19940 0 0 1 0 0 1 May-93 19550 0 0 0 1 0 0 0 0 3 0 2 01 1 1 0 2 3 1 0 0 1

160 0___

n 157 74 74 74 74 74 74 74 71 71 47 72 72 74 74 74 74 74 75 75 7474 74 74 74 74 74 71 71 71 71 71 71 75 775 75 75 75 75 74 74 74 55555555 55 55 55 55 55 55 55

sum 77 26 15 2 25 5 10 3 48 23 10 15 2 55 17 32 49 14 27 13 14 6 0 0 7 34 14 41 52 39 72 63 75 5 189 215 42 34 28 12 0 1 0 5 0 8 4 2 6 29

avg 1986 Jun-82 1957 0.1 0.5 0.2 0.6 0.7 0.5 1.0 0.8 1.0 0.1 2.5 2.9 0.6

min 1962 Jan-39 1925 0 0 0 0 0 0 0 0 1 0 1 1 0

max 1994 May-94 1993 2 3 3 2 2 2 1 2 1 1 7 6 2

st dev ___ _ _ 0.3 0.9 0.5 0.8 0.9 0.8 0.2 0.4 0.0 0.3 1.1 1.3 0.5

*Duplicate of #119"Duplicate of #123+ Evaluation not completed

TABLEB1AXLSPage 3 of 3

APPENDIX B, TABLE B-1B. DAVIS ISLANDS PARTICIPANT HOUSEHOLDS' QUESTIONNAIRE RESPONSES (Questions 1-9 excluding Q4d and open comment questions).

Q1 Q2 Q3 Q4a Q4b Q4c Q5House Survey

No. Retmd 1 2 3 4 5 6 7 8 9 101 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Y N U NR Date 0 25 50 75 100 A B C D E F G Ha Hb Y N AH M

4 1 00000001000000000010 0 0000010001000 001 0 0 0100

5 1 00000000010000000010 0 000000010000 1 000000100 0 0016 1 0000000001000000000100000010000001 1000

7 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 00 0 0 1 0 00 00 001 0 08 09 0

12 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0

13 1 0 00 0 0 0 .0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 014 015 016 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 Oct-94 0 0 0 0 1 0 1 0 0

17 018 019 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 Jun-94 0 0 0 0 1 0 0 0 120 1 00000000010000000001 001000Jun-94000001 00020 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 121 1 0 0 0 00 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 Jun-94 0 0 1 0 0 1 0 0

22 1 0 0 0 0 00 0 00 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 Jun-94 0 0 0 1 0 1 0 0 023 024 1 00000100000000000 1 0 0 0 0 0 0 0 0 1 0 0 10 0 0 0 01 0 00 100

25 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 00 0 1 0 0 1 0 0 Jun-94 0 0 0 1 0 1 0 0 026 027 028 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 Apr-94 0 0 0 0 1 1 0 0 029 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 0 1 0 1 0 0

30 031 1 000 0000 1 000000 00010000001 0 0 001000 0 0 0 1 0 1 00

32 1 000 1 0000 000 000 1 0000 0000000 1 0 0 1000 0u- 01 0 0 0 001 0

33 1 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 0 1 0 034 03 1 00 000000 00 000 0 000100001 01000000100

39 1 0000100000000010000000000001001000 01000 0100

40 1 000000001000000000100000000010100 01000 100035 1 00 0 0 0 0 0 1 0 0 0 0 0 1 1 0 1 0 0 0 0 0 10 0 037 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 00 0 0 0 1 0 0 1 0 03842 0

43 1 0000000 0 000000000 100000000010 01000 0 10 0 01 0 0140 1 00000000100000000010000000001 0 1 000 1 1 0 0

4 1 0 0 0 0 0 0 0 0 1 0 0 0000000 1 0 0 0 0 0 0 0 0 1000 001 0 0 0

47 0

48 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 1 0 0 0 1

44 1 0 0 0 0 0 00 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0

49 0

46 1 0 0 00 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 10 0 0 0 0 0 0 1 0 0 0 147 0

482 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 04953 051 0

54 055 056 1 1 0 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 057 0

TABLEB1B.XLSPage 1 of 6

APPENDIX 8, TABLE B-1B. (CONTINUED)

01 02 Q3 Q4a Q4b Q4c Q5

House SurveyNo. Ret'md 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Y N U NRDate 0 25 50 75 100 A B C D E F G Ha Hb Y N AH M

58 059 060 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0

61 062 063 064 0650 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 10 0 0 Nov-94 0 0 1 0 0 0 1 0 0

66 067 068 0690 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 0 1 0 0

70 071 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 Oct-94 0 0 0 1 0 0 1 0 0

72 1 00 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 00 1 0 0 0 0 0 0 0 1 0 0

73 074 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0

75 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0

76 077 078 079 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0

80 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0

81 0820 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 10 0 0 Nov-94 0 0 0 1 0 0 10 0

83 084 085 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0

86+870 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 10 0 0 May-94 0 0 0 0 1 0 1 0 0

88 089 090 091 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0

920 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 Nov-94 0 0 0 1 0 0 1 0

93 094 0950 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0

96 097 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 00 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0

98 099 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 10 0 0 00 1 0 0 0 1 0 0

100 0101 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 10 0 0Aug-94 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0

102 0103 0104 0105 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 10 0 0 0 1 0 0 00 1 0 0

106 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 00 0 0 1 0 0 1 0 0 0Aug-94 0 0 1 0 00 1 0 0

107 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 Dec-94 0 0 0 1 0 0 1 0 0

108 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 0 0 0

109*110 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1000 0 Dec-94 0 1 0 0 0 0 1 0 0 0 0 1 000 1 0 0

111 0112 0113 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 00 1 0 0

114 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 00 0 0 0 0 1 0 0 0 1


APPENDIX B, TABLE B-1B. (CONTINUED)

Q1 02 Q3 Q4a Q4b Q4c Q5House SurveyNo. Remd 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 Y N U NR Date 0 25 50 75 100 A B C D E F G Ha Hb Y N AH M

115 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 01 0 00 0 0 0 0 0 1 1 0 0 0

116 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 00 0 0 0 0 0 0 1 0 10 1 0 0

117 0118 0

119 0120 0121 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0

122 0123 0

124 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1125 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 10 0 0 0 0 0 0 000 1 1 0 0 0126 0

127 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 Jul-94 0 0 0 0 1 0 0 0 1

128 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 Jun-94 0 1 0 0 0 0 1 0 0129 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 0 0

130 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 Oct-94 0 1 0 0 0 0 1 0 0131 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0

132 0133 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 Oct-94 0 1 0 0 0 0 1 0 0134 0135 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 Jun-94 0 0 0 1 0 0 1 0 0136 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 10 0 0 0 1 0 00 1 0 0137 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 1 0 0 0 1

138 0139 0

140 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1000 0 0Sep-94 0 0 1 0 1 0 0 0141 0142 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 Oct-94 0 1 0 0 0 0 1 0 0143 0144 0145"

146 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 Aug-94 0 0 1 0 0 0 1 0 0147 0148 0149 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1

150 0151 0152 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 Aug-94 0 0 0 0 1 0 0 1 0

153 0154 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 00 Sep-94 0 0 0 0 1 0 1 0 0155 0156 0

157 0158 0

159 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1000 0 0Nov-94 0 00 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0

160 0n 157 75 75 75 75 75 75 75 75 75 75 76 76 76 76 76 76 76 76 76 76 73 73 73 73 73 73 73 73 73 73 76 76 76 76 28 52 52 52 52 52 15 15 15 15 15 15 15 15 15 74 74 74 74

sum 77 0 0 1 1 2 3 6 10 20 32 0 0 1 1 3 1 6 13 19 32 0 0 1 3 4 3 11 18 9 24 59 7 0 10 1 16 9 12 14 2 2 6 3 1 1 6 2 4 24 37 5 8

avg Aug-94

min Apr-94

max Dec-94

st dev

*Duplicate of #119SDuplicate of #123+ Evaluation not completed



Q6 Q7a Q7b Q7c Q7d Q7e Q7f Q8 Q9

House Hd

No. Y N U NR Y N U NR Date 0 25 50 75 1000 C A B C D E F G H I J K L M N Cost A B C D E F G Ha Hb He Hd $ He Hf B S W Y N

12 1 0 0 1 0 00 0 0 0 1 0 1 0 1 1 0 0 1 1 1 0 0 1 0 0 0 1 0 0 0

34 1 0 0 1 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 0 $10 00 1 00 1

5 0 00 1 00 0 1 0 1 0

6 01 0 0 0 0 0 Sep-94 0 0 0 1 0 1 01 0 0 0 1 0 0 0 0 0 0 0 0$5 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0

7 1 0 0 0 1 0 0 1 0 000 0 0 0 1

89101112 0 0 1 01 0 0 Jun-94 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 $4 0 1 0 0 1

13 1 0 0 0 0 1 00 0 0 0 0 0 1 0 0 1 0 0 0 $70 1 0 0 1 0

141516 1 0 1 0 0 0 Oct-94.0 0 0 0 1 0 1 1 0 0 0 1 00 1 1 0 0 0 $150 01 00 1

171819 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0000 0 0 0 1 0 0 1

20 0 1

21 01 0 0 0 0 0 0 1 0 0 0 101 0 0 0 0 0 1 0 01 0 0 0 $100 0 1 0 1 0

22 0 0 0 1 10 0 0 Jun-940 0 0 1 0 0 1 $50 0 0 0 0 000 0 1 0 0 0 0 0 1 0 01

2324 0 1 1 0 0 0 0111 0 0 0 1 0 0 0 0 0 $60 0 1 0 01

25 1 0 0 1 0 0 Jun-94 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 $50 1 0 010

262728 0 0 0 1 0 0 Apr-94 0 0 0 10 1 1 1 1 1 0 1 1 1 0 1 00 0 $100 0 1 0 10

29 00010001 00000010000 010100129 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1

3031 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 00 0 1 0 0 1 0 0 0 0 $10 0 1 0 0 1

32 10 00 1 0 0 1 0 0 0 0 0 1 0 1 1 11 1 1 1 1 1 1 1 0 0$500 0 1 0 0 1

33 0110 0 0 0 0 0 0 1 0 1 0 0 0 11 1 1 $100 1 0 1 0

3435 00 0 1 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 $25 0 1 1 1 0 0 1 0 0 0 0 0 0 0 1

3637 1 0 0 1 0 0 Feb-95 0 0 1 0 0 01 1 01 1 10000 0 0 10

3839 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 $50

40 0 1 0 0 1 0 0 0 Jul-94 0 1 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 $100 1 0 0 0 141 0 1 00 0 0 0 0 0 1 0 0 0 1 01 0 0 0 0 0 0 1 0 0 001

4243 0 1 0 0 1 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 000 0 0 $60 0 1 0 0 144 0 00 1 1 0 0 0 Jun-940 0 0 0 1 0 1 1 1000 1 0 1 0 1 0 0 0 0 $100 0 1 0 0 14546 10000 0 1 0 0 0 0 1 10 1 1 000 0 1 1 00 1 11 $10 $101 0 0 00 1

4748 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 1 0 1 $50 0 0 1 0 0 0 14950 00010001 0 1 0 0 1

5152 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 153545556 1 0 0 0 1 0 0 0 0 1 1 1 0 0 0 1 1 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 00 0157

TABLEBl B.XLSPage 4 of 6


Q6 Q7a Q7b Q7c Q7d Q7e Q7f Q8 Q9

House Hd

No. Y N U NRY N U NR Date 0 25 50 75 100 0 C A B C D E F G H I J K L M N Cost AB C D E F G Ha Hb He Hd $ He Hf B S W Y N

585960 0 0 0 1 1 0 0 1 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 $0

6162636465 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 $200 0 0 1 0 1

66676869 0 0 0 1 1 0 0 0 0 0 0 0 1 0 1 1 0 0 0 1 1 0 0 1 0 0 0 0 $0 1 0 0 1 07071 1 0 0 0 0 0 0ct-94 0 0 01 110 1 0 1 1 1 0 0$500 0 1 0 1 0

72 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0

7374 0 1 0 0 1 00 0 Feb-94 0 0 0 1 0 0 1 1 1 0 0 0 1 1 0 0 0 0 0 $50 1 0 0 175 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 $35 0 1 0 0 176777879 00 0 1 0 0 1 0 01

8 0 0 0 1 0 0 0 0 11 1 0 0 0 1 1 0001 0 0 0 0 0 0 0 0 0 0

8182 1 010 0 1 0 0 0 0 0 101 1 0 0 11 0 1 0 1000 0 0 1$10 0 1 0 0 1

838485 0 1 0 0 1 0 0 0 0 1 1 1 0 0 0 1 1 0 010 0 0 0 $40 0 1 0 0 1

86+87 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 0 1 0

88899091 0 00 1 10 0 0 Aug-94 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 1 0 0 0 0$25 01 001

92 0 1 0 0 1 0 0 Oct-94 0 0 10 1 0 0 0 1 0 0 0 0 0 0 00 $0 01 001939495 1 0 0 01 0 0 01 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 $50 0 0 100

9697 0 1 0 0 10 0 0 0 0 0 1 1 0 0 0 0 0 0 0 10 0 0 $0 01001

9899 1 0 0 0 1 0 0 0 Jul-94 0 0 1 0 0 1 0 1 1 1 1 0 1 1 0 0 1 0 1 1 1 $250 0 0 1 1 0 0 0 1 1 1 1 $50 0 0 1 0 0 1 0

100101 1 0 00 1 0 0 0Sep-94 0 0 1 0 0 1 0 01 1 0 0 1 1 0 0 0 0 0 0 $30 0 0 1 0 0 0 0 0 0 0 1 0 0 1 01 0

102103104105 0 0 0 1 1 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 00 01 0

106 10Aug-940 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 10 0 1 0 1

107 0 1 0 0 1 0 0 0 Sep-94 0 0 0 1 0 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 $200 0 0 1 0 0 0 0 0 0 0 1 $50 1 0 0 1 0 1 0

108 1 0 0 0 10 0 0Nov-94 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 0 1 0 0 0 0 $75 1 0 0 0 1

109"110 0 1 0 0 1 0 0 0 Dec-94 0 0 0 1 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0 0 0 $350 1 0 0 1 0

111112113 0 1 0 0 0 1 0 0114 0 1 0 0 1



Q6 Q7a Q7b Q7c Q7d Q7e Q7f Q8 Q9House Hd

No. Y N U NR Y N U NR Date 0 25 50 75 100 C A B C D E F G H I J K L M N Cost A B C D E F G Ha Hb Hc Hd $ He Hf B S W Y N115 0 1 0 0 1 0 0 0 Nov-94 0 0 0 1 0 0 1 1 0 0 0 0 1 0 0 0 1 0 0 0 0 $55 0 0 1 0 0 0 0 1 0 0 1 $50 0 0 0 1 0 0 1116 0 0 0 1 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0117

118

119120

121 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 $50 0 1 0 0 1

122123124 1 0 0 0 1 0 0 0 Jun-94 0 0 0 1 0 1 0 0 1 0 0 1 1 1 0 0 1 0 1 1 0 $200 0 1 0 0 1125 0 1 0 0 1 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 $100 0 1 0 0 1126127 0 0 0 1 1 0 0 0Jul-94 0 0 0 0 1 1 0 $0128 0 1 0 0 1 0 0 0Aug-94 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 $0 1 1 1 0 0 0 0 0 0 0 1 $50 1 0 0 1 0 0 1129 0 0 0 1 0 0 0 1 0 1130 0 1 0 0 0 1 0 0 0 1 00 1131 0 0 0 1 1 0 0 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 $6 0 1 0 0 1132133 10 0 0 1 0 00 Jan-95 0 1 0 0 0 0 1 1 0 0 0 0 0 1 0 0 1 1 0 00 0 1 0 0 0 0 0 0 0 0 0 1 $100 1 0 10 0 0 1134135 1 0 0 0 1 0 0 0 Jun-94 0 0 0 1 0 1 0 1 1 0 0 0 1 1 0 0 1 0 0 0 0 $30 1 0 0 1 0136 1 0 0 0 1 0 0 0 Jun-94 0 1 0 0 0 0 1 1 1 0 0 0 0 1 0 0 1 0 1 0 0 $125 1 0 0 0 1137 0 0 0 1 1 0 0 0 Oct-94 0 0 0 0 1 0 1 0 0 0 0 0 1 1 0 0 1 0 0 0 0 $49 0 1 0 0 1138139140 0 1 0 0 1 0 0 0Sep-94 0 0 0 1 0 0 1 1 0 0 0 0 1 1 0 0 1 0 0 0 0 $75 0 1 0 0 1141142 0 0 0 1 1 0 0 0 Oct-94 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0$35 0 1 0 0 1143144145"

146 0 0 0 1 1 0 0 0Sep-94 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 $5 0 1 0 0 1147148149 0 1 0 0 0 1 00 0 1 0 0 1

150151152 0 0 0 1 1 0 0 0 Aug-94 0 0 0 0 1 1 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 $58 0 1 0 0 1153154 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0155156157158159 0 0 0 1 1 0 0 0 Nov-94 0 0 0 0 1 0 1 1 1 0 1 1 0 1 1 0 0 0 0 0 0 $900 1 0 0 1160 ____

n 74 74 74 74 75 75 75 75 32 51 51 51 51 51 57 57 59 59 59 59 59 59 59 59 59 59 59 59 59 59 50 20 20 20 20 20 20 20 20 20 20 20 9 20 20 65 65 65 68 68sum 18 31 1 24 61 9 0 5 N/A 0 12 9 15 15 27 31 47 31 9 7 5 26 37 7 2 31 9 8 3 1 $4,767 3 3 8 5 1 0 5 4 5 3 10 $700 4 1 19 46 0 18 50avg Aug-94 $95 $78

min Feb-94 $0 $50max Feb-95 $900 $200st dev_ $161 $51

*Duplicate of #119"Duplicate of #123+ Evaluation not completed


APPENDIX B, TABLE B-2. DAVIS ISLANDS CONTROL HOUSEHOLDS' QUESTIONNAIRE RESPONSES.

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q9aHouse Survey

No. Ret'rnd Y N A M U LC IC ES S N AS O Y N AH U Year U PIP S C U Y N U Y N U Y N U A B C D E F G H I J K L M N O1.2 1 1 010 0 1 0 0 1 0 1 0 1 0 0 0 0 1 1 1 0 0 0 0 1 0 1 1 0 0 1 0 12.2 1 1 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 1990 0 0 1 0 0 1 0 0 1 0 0 1 0 03.2 0

4.2 1 10 1 0 00 1 0 0 0 001 0 00 1 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 15.2 0

6.2 0

7.2 08.2 1 1 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 1989 0 0 0 0 1 1 0 0 0 1 0 0 0 19.2 1 1 0 10 0 00 0 0 1 0 0 0 1 0 0 0 1981 0 0 0 1 0 1 0 0 1 0 0 1 0 010.2 1 1 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 0 0 1 1 1 0 0 0 0 0 0 0 111.2 ++

12.2 1 1 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 1 0 0 0 0 1 0 0 0 1 0 1 0 1 1 1 1 0 0 0 0 0 113.2 014.2 015.2 016.2 1 1 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 117.2 1 1010010 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 1 1 0 0 0 0 0 1 0 0 1 0 0 0 0 118.2 1 10 1 001 0 0 0 0 0 01 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 119.2 020.2 021.222.2 1 1 0 1 0 0 1 1 0 0 0 0 0 0 0 1 0 1994 0 0 0 1 0 1 0 0 0 1 0 0 1 023.2 024.2 025.2 026.2 1 10010 1 0 0 1 0 0 1 0 0 1 0 0 0 127.2 028.2 ++

29.2 1 1010 01 1 0 0 0 00 0 1 0 1 0 0 1 0 0 0 1 0 1 0

30.2 1 1 0 1 0 1 0 0 0 0 0 1 0 0 0 1958 0 0 0 1 0 1 0 0 1 0 0 0 0 1 1 1 1 1 1 0 1 0 0 0 1 0 1 1 131.2 *32.2 033.2 034.2 1 1 01000 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 1 0 0 1 0 0 1 0 035.2 1 1 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 036.2 1 101000 1 0 0 0 0 0 0 0 1 01994 0 0 0 1 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 137.2 *38.2 039.2 040.2 041.2 042.2 1 101 0 0 0 1 0 00 0 1 0 0 0 0 1 0 1 0 0 0 1 1 0 1 0 0 1 1 0 0 0 0 1 0 0 1 0 0 0 143.2 044.2 1 1 0 1 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 145.2 046.2 047.2 048.2 049.2 050.2 051.2 0

TABLEB2.XLSPace 1 of 8

APPENDIX B, TABLE B-2. (CONTINUED)

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q9a

House SurveyNo. Ret'md Y N A M ULC ICES S N AS O Y N AH U Year U PIPS C U Y N U Y N U Y N U A B C D E F G H I J K L M N O

52.2 1 1 01 0 00 0 0 1 0 0 0 1 0 0 01974 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1

53.2 1 1 010 1 0 1980 0 0 0 1 0 0 1 0 0 1 0 0 1 0

54.2 1 10.1 0 00 0 0 0 0 0 1 0 0 1 01994 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 1 0 0 1 1 0 0 1 0 1 0 1 155.2 1 1 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 1984 0 0 0 1 0 1 01 0 0 0 1 0 0 1 1 0 0 0 1 1 0 0 1 0 0 0 0 1

56.2 057.2 058.2 1 1 00 1 0 0 1 0 0 1 1 0 0 1 0 0 1 0 0 1 1 0 1 0 1 1 1 0 1 0 1 1 0 1

59.2 060.2 061.2 1 1 01 0 00 1 0 0 0 0 00 1 0 01985 0 0 0 1 0 1 0 0 0 1 0 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0

62.2 1 1 01 0 0 0 1 0 0 0 0 01 0 0 0 1 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 0 1 0 1 1 0 1

63.2 064.2 1 1 01 0 01 0 0 0 0 0 1 0 0 0 1 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 165.2 1 11 01 0 1 0 0 0 0 0 1 0 0 01985 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 0 166.2 1 101 0 0 0 0 0 0 1 0 0 1 0 0 1 00 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 0 0 1 0 0 0 0 1

67.2 068.2 1 1 01 0 0 0 0 1 0 0 00 0 0 1 1 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 0 0 0 0 1 0 0 1 0 0 0 0 0

69.2 070.271.2 1 1 01 00 0 0 0 1 0 0 00 1 00 1 1 0 0 1 0 1 0 0 1 0 0 1 1 0 0 1 0 1 0 0 1 0 0 0 0 1

72.2 073.2 074.2 075.2 1 1 00 1 0 1995 0 0 0 1 0 0 1 0 0 1 0 0 1 076.2 077.2 078.2 079.2 080.2 081.2 082.2 083.2 084.2 085.2 1 1 01 0 01 1 0 1 0 0 0 0 1 01992 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 1 1 0 1 1 1 1 1 0 0 0 0 1

86.2 +87.2 1 101 1 0 0 0 01 0 0 01 0 0 1 0 11 0 0 1 0 1 0 0 0 1 00

88.2 089.2 090.2 091.2 1 1 0 1 0 0 1 0 0 0 0 0 00 0 0 1 1993 0 0 0 1 0 0 1 0 0 0 1 1 0 0

92.2 1 101 0 0 0 0 1 0 0 0 0 0 1 01994 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 0 1 0 1 1 1 0 0 0 0 1 1 193.2 094.2 095.2 096.2 1 1 0 1 0 00010000 00 0 00 1 00 0 1 0 0 1 0 1 0 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1

97.2 098.2 1 1 01 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 1 1 0 1 1 0 1 1 0 1 0 1 0 0 1

99.2100.2 0101.2 0102.2 1 01000 0 0 0 0 1 0 0 0 1991 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 1 1 0 0 1 1 1 0 0 0 0 1

TABLEB2.XLSPage 2 of 8


Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q9a

House SurveyNo. Retrnd Y N A M U LC ICES S N AS O Y N AH U Year U PIP S C U Y N U Y N U Y N U A B C D E F G H I J K L M N O

103.2 1 1 00 0 1 0 1 0 0 1 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

104.2 0105.2 0106.2 0107.2 1 101 0 011 0 0 0 0 0 1 0 0 01994 00 0 1 0 0 1 0 0 0 1 0 0 11 1 1 1 1 1 1 0 1 0 0 0 0 1

108.2 1 101 0 0 0 0 1 0 0 0 1 0 0 01992 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1

109.2 +110.2 0111.2 0112.2 1 1 01 0 0 1 0 0 0 0 0 1 0 0 01984 0 0 0 0 1 0 1 0 1 0 0 1 0 0 1 1 1 1 1 0 1 1 0 1 0 0 0 0 1

113.2 0114.2 0115.2 0116.2 1 1 0 1 0 0 1 1 0 0 0 0 0 0 0 1 0 1994 0 0 0 1 0 0 0 1 1 0 0 1 0 0 1 1 0 0 0 1 1 0 0 0 0 0 1 0 1

117.2 0118.2 1 1 0 1 0 0 0 1 0 0 0 0 00 0 1 0 1980 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1

119.2 1 1 0 1 1 0 0 0 0 1 0 0 0 0 0 0 1 1992 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 1 1 0 0 0 1 1 0 1 0 1 1 0 1

120.2 0121.2 0122.2 0123.2 0124.2 0125.2 0126.2 1 1 01 0 01 0 0 0 0 0 01 0 0 0 1 0 0 0 1 1 0 0 1 0 0 1 0 0 1 1 0 0 0 1 1 1 0 1 0 0 0 0 1

127.2 0128.2 0129.2 0130.2 1 101 0 0 1 0 0 0 0 01 0 0 0 1980 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1

131.2 0132.2 0133.2 0134.2 0135.2 0136.2 1 1 01 0 01 1 0 0 0 0 0 1 0 0 01993 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 1

137.2 0138.2 0139.2 0140.2 1 1 0 1 1 0 0 0 0 1 0 0 0 1 0 0 0 1985 0 0 0 1 0 1 0 0 0 1 0 0 1 0141.2 0142.2 0143.2 0144.2 0145.2 +146.2 1 1001 0 0 1 0 0 1 0 1 0 0 0 1147.2 1 101 0 0 0 1 0 0 0 0 0 0 0 1 01989 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 0 0 1 1 0 0 1 0 0 0 0 1

148.2 0149.2 0150.2 1 1 01 0 01 0 0 0 0 0 0 1 0 0 01979 0 0 0 1 0 1 0 0 1 0 0 1 0 0

151.2 0152.2 1 1 01 0 0 0 0 1 0 0 01 0 0 0 1991 0 0 0 0 1 0 0 1 0 0 1 0 0 1 1 1 0 1 0 1 1 0 1 1 0 0 0 1

153.2 0



Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q9a

House SurveyNo. Ret'd Y N A M U LC IC ES S N AS O Y N AH U Year U PIP S C U Y N U Y N U Y N U A B C D E F G H I J K L M N O

154.2 0155.2 1 1 0 0 1 0 10 0 0 1 0 0 1 1 0 0 0 0 1

156.2 0157.2 0158.2 0159.2 1 1 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 1985 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 0 1 1 0 1 0 1 1 1 0 0 0 1

160.2 1 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 1 0 0 1 0 0 1 0 0 1 1 1 1 1 0 1 0 1 0 0 0 1 0 1

n 150 57 57 57 57 57 49 49 49 49 49 49 49 49 49 49 49 30 56 56 57 57 57 57 57 57 57 57 57 56 56 56 42 42 42 42 42 42 42 42 42 42 42 42 42 42 42

sum 57 57 0 49 10 1 15 19 1 14 1 3 3 31 3 11 4 13 13 4 35 19 28 24 5 44 9 4 42 5 9 40 35 23 23 23 24 41 22 17 33 12 12 16 7 39

avg 1987min 1958max 1995

stdev

* Survey returned, address not valid.+ Corresponding participant household was duplicate or did not have evaluation completed.

*" Household had independent audit completed previously.++ Household removed from study because did not have inground sprinkler system.



Q10 Q11 Q12 Q13 Q14 Q15 Q16


No. Ret'rnd S LC Date Date 1 2 3 4 5 6 6+ <2 12 18 40 60 61+ DW GD CW WS S/T T P/J A B C D E F G H I J

1.2 1 0 1Aug-94 1959 0 0 0 1 0 0 0 2 0 0 2 0 0 1 1 1 0 6 4 1

2.2 1 0 1Jan-90 1953 0 0 0 0 1 0 0 1 1 1 0 2 3 0 0 0 0 0 0 0 0 0 0 1

3.2 0

4.2 1 0 1Aug-94 1955 0 1 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 2 3 1 0 0 0 0 0 0 0 0 0 1

5.2 06.2 0

7.2 08.2 1 0 1Aug-94 1989 0 0 1 0 0 0 0 0 0 0 1 2 0 1 1 1 0 4 4 1 0 0 0 0 0 0 0 0 0 1

9.2 1 1 0Jan-72 1940 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 3 3 1 0 0 0 0 0 0 0 1 0 0

10.2 1 1 0Jun-89 1953 0 0 0 1 0 0 0 0 1 1 0 2 0 1 0 1 0 3 3 0

11.2 ++

12.2 1 1 0Dec-72 1962 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 3 4 1 0 0 0 0 0 0 0 0 0 113.2 014.2 015.2 016.2 1 0 1Dec-86 1958 0 0 1 0 0 0 0 0 1 0 2 0 0 1 1 1 0 2 3 1 0 0 0 0 0 0 0 0 0 1

17.2 1 0 1Apr-94 1955 0 0 1 0 0 0 0 1 0 0 2 0 0 1 1 1 0 3 4 1 0 0 0 0 0 0 0 0 0 1

18.2 1 0 1 Jul-91 1990 0 0 0 1 0 0 0 0 0 1 1 2 0 1 1 1 0 3 4 0 0 0 0 0 0 0 0 0 1 0

19.2 020.2 021.222.2 1 1 0 Jul-94 1949 0 0 1 0 0 0 0 0 1 0 2 0 0 1 1 1 0 2 4 0

23.2 024.2 025.2 026.2 1 1 Feb-94 1957 0 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 2 2 0 0 0 0 0 0 0 0 0 0 1

27.2 028.2 ++

29.2 1 1 0 1947 0 0 0 1 0 0 0 0 0 0 2 2 0 1 1 1 0 3 3 0 0 0 0 0 0 0 0 0 1

30.2 1 1 0Jun-76 1958 0 1 0 0 0 0 0 0 0 0 0 2 0 1 0 1 0 1 2 1 0 0 0 0 1 0 0 0 0 0

31.232.2 033.2 034.2 1 1 1Jan-90 1925 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0

35.2 1 0 1Apr-73 1950 0 0 1 0 0 0 0 0 1 1 0 1 0 1 1 1 0 4 4 0 0 0 0 0 0 1 0 0 0 0

36.2 1 0 1May-92 1958 1 0 0 0 0 0 0 0 0 0 1 0 0 1 1 1 0 2 2 0 0 0 0 0 0 0 0 1 0 0

37.238.2 039.2 040.2 041.2 042.2 1 1 1Mar-92 1941 0 0 1 0 0 0 0 0 2 0 0 1 0 1 1 1 1 2 2 1 0 0 0 1 0 0 0 0 0 0

43.2 044.2 1 0 1Aug-90 1965 0 0 0 1 0 0 0 0 0 1 1 2 0 1 1 1 0 2 3 0 0 0 0 0 0 0 0 0 0 1

45.2 046.2 047.2 048.2 049.2 050.2 051.2 0



Q10 Q11 Q12 Q13 Q14 Q15 Q16

House Survey 3- 13- 19- 41-No. Ret'rnd S LC Date Date 1 2 3 4 5 6 6+ <2 12 18 40 60 61+ DW GD CW WS S/T T P/J A B C D E F G H I J

52.2 1 1 Apr-69 1928 0 0 1 0 0 0 0 0 0 0 0 1 2 1 1 1 0 4 4 0 0 0 0 0 0 0 0 0 0 1

53.2 1 0 1 Jun-57 1956 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0

54.2 1 1 0Jan-92 0 1 0 0 0 0 0 0 0 0 0 2 0 1 0 1 4 4 1 0 0 0 0 0 0 0 0 1 0

55.2 1 0 1 Nov-41 1941 1 0 0 0 0 0 0 0 0 0 0 0 156.2 0

57.2 0

58.2 1 0 1 Jun-93 1950 0 1 0 0 0 0 0 0 0 0 2 0 0 1 1 1 0 2 3 0 0 0 0 0 0 0 0 1

59.2 060.2 0

61.2 1 1 0 Jan-60 1951 1 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 2 2 0 0 0 0 1 0 0 0 0 0 0

62.2 1 0 1 Feb-90 196 0 0 0 0 1 0 0 0 0 1 2 2 0 1 1 1 0 6 6 1 0 0 0 0 0 0 0 0 0 163.2 064.2 1 Sep-87 0 1 0 0 0 0 0 0 0 0 0 1 1 1 0 1 1 4 4 1 0 0 0 0 0 0 0 0 0 1

65.2 1 1 0Aug-85 1985 0 0 1 0 0 0 0 0 0 0 2 1 0 1 1 1 0 2 3 0 0 0 0 1 0 0 0 0 0 0

66.2 1 0 1 Oct-93 1956 0 0 0 1 0 0 0 0 0 0 2 2 0 1 1 1 0 2 3 0 0 0 0 0 0 0 0 0 1 0

67.2 068.2 1 1 0 Nov-93 1950 0 0 0 1 0 0 0 1 1 0 2 0 0 1 1 1 0 3 2 0 0 0 0 0 0 0 0 0 0 1

69.2 070.271.2 1 1 0Jun-93 1961 0 0 0 0 0 1 0 1 3 0 2 0 0 1 1 1 1 3 3 1 0 0 0 0 0 0 0 0 0 172.2 073.2 074.2 075.2 1 0 Sep-89 1957 0 1 0 0 0 0 0 0 0 0 2 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 176.2 0

77.2 078.2 0

79.2 0

80.2 081.2 082.2 083.2 084.2 085.2 1 1 1May-77 1955 0 1 0 0 0 0 0 0 0 0 0 0 2 1 1 1 0 2 2 0 0 0 0 0 0 0 0 0 0 1

86.2 +87.2 1 1 0 Jul-720 0 1 0 0 0 0 0 0 0 2 1 0 1 1 1 0 2 2 1 0 0 0 0 0 1 0 0 088.2 089.2 090.2 091.2 1 0 1 Sep-86 1953 0 1 0 0 0 0 0 0 0 0 2 0 1 1 1 0 3 3 0

92.2 1 1 0Jun-94 1994 0 0 0 1 0 0 0 0 2 0 0 2 0 1 1 1 1 3 3 1 0 0 0 0 0 0 0 0 0 1

93.2 094.2 095.2 096.2 1 0 1 Apr-88 1926 0 0 0 1 0 0 0 0 2 0 1 1 0 1 0 1 0 3 3 0 0 0 0 0 0 0 0 0 0 1

97.2 098.2 1 0 1 1950 0 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 2 2 1 0 0 0 0 0 0 0 0 1 0

99.2100.2 0101.2 0

102.2 1 1 0 Oct-88 1965 0 0 1 0 0 0 0 0' 0 0 1 0 2 1 1 1 1 2 4 1 0 0 0 0 0 0 0 0 0 1



Q10 Q11 Q12 Q13 Q14 Q15 Q16


No. Ret'rnd S LC Date Date 1 2 3 4 5 6 6+ <2 12 18 40 60 61+ DW GD CW WS S/T T P/J A B C D E F G H I J

103.2 1 1 0 Apr-94 1950 0 0 1 0 0 0 0 0 1 1 1 1 1 1 1 0 3 3 1 0 0 0 0 0 0 0 1 0 0

104.2 0105.2 0106.2 0107.2 1 1 Jun-93 1949 0 0 0 1 0 0 0 0 1 1 1 1 0 1 1 1 0 3 4 1 0 0 0 0 0 0 0 0 1

108.2 1 1 Feb-92 1992 0 0 0 1 0 0 0 2 0 0 2 0 0 1 2 1 0 3 3 0 0 0 0 0 0 0 0 0 0 1

109.2 +110.2 0111.2 0112.2 1 0 1 Nov-91 1927 0 0 0 1 0 0 0 0 1 0 0 2 1 1 0 1 0 3 3 1113.2 0114.2 0115.2 0116.2 1 1 0 Aug-93 1945 0 0 1 0 0 0 0 0 0 0 1 0 2 1 0 1 0 3 3 1 0 0 1 0 0 0 0 0 0 0

117.2 0118.2 1 0 1 Jun-75 1970 0 0 0 1 0 0 0 0 0 1 1 2 0 1 1 1 0 4 4 1 0 0 0 0 0 0 0 0 0 1

119.2 1 1 0 Jan-85 1957 0 0 1 0 0 0 0 0 0 0 1 2 0 1 1 1 0 3 3 0 0 0 0 0 0 0 0 0 1 0

120.2 0121.2 0122.2 0123.2 0124.2 0125.2 0126.2 1 0 1 Jul-84 1949 0 0 0 1 0 0 0 0 2 0 0 2 0 1 1 1 0 2 2 1 0 0 0 0 0 0 0 0 0 1

127.2 0128.2 0129.2 0130.2 1 1 Dec-55 1951 0 1 0 0 0 0 0 0 0 0 0 2 1 0 1 0 2 2 0 0 0 0 0 1 0 0 0 0 0

131.2 0132.2 0133.2 0134.2 0135.2 0136.2 1 0 1Jun-92 1949 0 0 0 0 1 0 0 0 1 2 0 2 0 0 0 0 0 0 0 0 0 1

137.2 0138.2 0139.2 0140.2 1 1 0Dec-44 1944 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 1 1 0

141.2 0142.2 0143.2 0144.2 0145.2 +146.2 1 0 1Nov-93 1945 0 1 0 0 0 0 0 0 0 0 0 1 1 1 0 1 0 1 2 0 0 0 1 0 0 0 0 0 0

147.2 1 1 0Mar-88 1988 0 1 0 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 0 0

148.2 0149.2 0150.2 1151.2 0152.2 1 1 0 Jan-50 1950 0 1 0 0 0 0 0 0 0 2 0 0 0 1 0 0 0 0 0

153.2 0



Q10 Q11 Q12 Q13 Q14 Q15 Q16

House Survey 3- 13- 19- 41-No. Ret'md S LC Date Date 1 2 3 4 5 6 6+ <2 12 18 40 60 61+ DW GD CW WS S/T T P/J A B C D E F G H I J

154.2 0

155.2 1 0 1 Jun-94 1960 0 1 0 0 0 0 0 0 0 0 1 0 1 1 1 0 2 3 0 0 0 0 0 0 0 0 0 0 1

156.2 0157.2 0158.2 0159.2 1 1 0Jan-84 1956 0 0 1 0 0 0 0 1 0 0 1 1 0 1 2 1 0 3 4 1 0 0 0 0 0 0 0 0 1 0

160.2 1 1 Nov-94 1958 0 0 0 1 0 0 0 1 1 0 2 0 0 1 1 1 0 1 2 0 0 0 0 0 0 1 0 0 0 0n 150 55 SS 54 53 56 56 56 56 56 56 56 55 55 55 55 55 55 51 51 51 51 51 51 51 49 49 49 49 49 49 49 49 49 49

sum 57 30 28 5 18 13 16 3 1 0 9 20 10 45 48 28 48 41 51 5 134 151 24 0 1 2 4 2 2 2 4 7 25

avg Mar-84 1956 0.2 0.4 0.2 0.8 0.9 0.5 0.9 0.8 1.0 0.1 2.6 3.0 0.5min Nov-41 1925 0 0 0 0 0 0 0 0 1 0 1 1 0

max Nov-94 1994 2 3 2 2 2 2 1 2 1 1 6 6 1stdev 5000.7 15.5 0.5 0.7 0.4 0.8 0.8 0.8 0.2 0.5 0.0 0.3 1.1 1.0 0.5

* Survey returned, address not valid.

+ Corresponding participant household was duplicate or did not have evaluation completed.

* Household had independent audit completed previously.++ Household removed from study because did not have inground sprinkler system.


APPENDIX C

DAVIS ISLAND STUDY HOUSEHOLDS' WATER USE DATA

EXHIBIT C-1A. STATISTICAL ANALYSES - PRE-EVALUATION TOTALWATER USE, PARTICIPANT VS. CONTROL HOUSEHOLDSt-Test: Two-Sample Assuming Unequal Variances

Participant Pre Controls PreMean 673.356 610.334Variance 138706.256 152443.980Observations 114 112Hypothesized Mean Difference 0df 223t Stat 1.241P(T<=t) one-tail 0.108t Critical one-tail 1.652P(T<=t) two-tail 0.216t Critical two-tail 1.971

EXHIBIT C-1 B. STATISTICAL ANALYSES - POST-EVALUATION TOTALWATER USE, PARTICIPANT VS. CONTROL HOUSEHOLDSt-Test: Two-Sample Assuming Unequal Variances

Participant Post Controls PostMean 490.034 505.130Variance 67330.682 92596.342Observations 114 112Hypothesized Mean Difference 0df 217t Stat -0.401P(T<=t) one-tail 0.344t Critical one-tail 1.652P(T<=t) two-tail 0.689t Critical two-tail 1.971

EXHIBITC.XLSPage 1 of 14

EXHIBIT C-2A. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS'TOTAL WATER USE, PRE- VS. POST EVALUATIONt-Test: Two-Sample Assuming Unequal Variances

Pre Post

Mean 673.356 490.034Variance 138706.256 67330.682

Observations 114 114

Hypothesized Mean Difference 0df 202t Stat 4.312P(T<=t) one-tail 0.000t Critical one-tail 1.652P(T<=t) two-tail 0.000t Critical two-tail 1.972

EXHIBIT C-2B. STATISTICAL ANALYSES - CONTROL HOUSEHOLDS'TOTAL WATER USE, PRE- VS. POST-EVALUATIONt-Test: Two-Sample Assuming Unequal Variances

Pre Post

Mean 610.334 505.130

Variance 152443.980 92596.342Observations 112 112



EXHIBIT C-3A. STATISTICAL ANALYSES - PRE-EVALUATION TOTAL WATER

USE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Pre Controls Pre

Mean 790.258 765.938

Variance 147255.331 156646.590

Observations 72 64

Hypothesized Mean Difference 0df 131t Stat 0.363P(T<=t) one-tail 0.359

t Critical one-tail 1.657P(T<=t) two-tail 0.717t Critical two-tail 1.978

EXHIBIT C-3B. STATISTICAL ANALYSES - POST-EVALUATION TOTAL WATERUSE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Post Controls Post

Mean 562.161 608.352

Variance 69038.616 93812.971

Observations 72 64

Hypothesized Mean Difference 0df 125t Stat -0.938P(T<=t) one-tail 0.175t Critical one-tail 1.657P(T<=t) two-tail 0.350t Critical two-tail 1.979


EXHIBIT C-4A. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS WITH

LAWN METERS, PRE- VS. POST-EVALUATION TOTAL WATER USEt-Test: Two-Sample Assuming Unequal Variances

Pre Post

Mean 790.258 562.161

Variance 147255.331 69038.616

Observations 72 72


EXHIBIT C-4B. STATISTICAL ANALYSES - CONTROL HOUSEHOLDSWITH LAWN METERS, PRE- VS. POST-EVALUATION TOTAL WATER USEt-Test: Two-Sample Assuming Unequal Variances

Pre Post

Mean 765.938 608.352

Variance 156646.590 93812.971

Observations 64 64



EXHIBIT C-5A. STATISTICAL ANALYSES - PRE-EVALUATION IRRIGATIONWATER USE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Pre Controls PreMean 569.862 505.611Variance 122945.215 100993.505Observations 72 64Hypothesized Mean Difference 0df 134t Stat 1.121P(T<=t) one-tail 0.132t Critical one-tail 1.656P(T<=t) two-tail 0.264t Critical two-tail 1.978

EXHIBIT C-5B. STATISTICAL ANALYSES - POST-EVALUATION IRRIGATIONWATER USE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Post Controls PostMean 353.666 347.904Variance 51206.512 59215.491Observations 72 64Hypothesized Mean Difference 0df 129t Stat 0.142P(T<=t) one-tail 0.443t Critical one-tail 1.657P(T<=t) two-tail 0.887t Critical two-tail 1.979


EXHIBIT C-6A. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS WITHLAWN METERS, PRE- VS. POST-EVALUATION IRRIGATION WATER USEt-Test: Two-Sample Assuming Unequal Variances

Pre PostMean 569.862 353.666Variance 122945.215 51206.512Observations 72 72Hypothesized Mean Difference 0df 121t Stat 4.396P(T<=t) one-tail 0.000t Critical one-tail 1.658P(T<=t) two-tail 0.000t Critical two-tail 1.980

EXHIBIT C-6B. STATISTICAL ANALYSES - CONTROL HOUSEHOLDS WITHLAWN METERS, PRE- VS. POST-EVALUATION IRRIGATION WATER USEt-Test: Two-Sample Assuming Unequal Variances



EXHIBIT C-7. STATISTICAL ANALYSES - DIFFERENCE BETWEEN PRE- AND

POST-IRRIGATION WATER USE AVERAGES, PARTICIPANT VS. CONTROLHOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participants ControlsMean 216.196 157.707Variance 53129.786 69360.037Observations 72 64



EXHIBIT C-8A. STATISTICAL ANALYSES - PRE-EVALUATION OTHER WATERUSE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Pre Controls PreMean 219.679 260.327Variance 10800.665 24355.544Observations 72 64Hypothesized Mean Difference 0df 108t Stat -1.765P(T<=t) one-tail 0.040t Critical one-tail 1.659P(T<=t) two-tail 0.080t Critical two-tail 1.982

EXHIBIT C-8B. STATISTICAL ANALYSES - POST-EVALUATION OTHER WATERUSE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITH LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Post Controls PostMean 208.495 260.448Variance 8414.249 15149.762Observations 72 64Hypothesized Mean Difference 0df 116t Stat -2.763P(T<=t) one-tail 0.003t Critical one-tail 1.658P(T<=t) two-tail 0.007t Critical two-tail 1.981


EXHIBIT C-9A. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS

WITH LAWN METERS, PRE- VS. POST-EVALUATION OTHER WATER USEt-Test: Two-Sample Assuming Unequal Variances

Pre Post

Mean 219.679 208.495

Variance 10800.665 8414.249

Observations 72 72

Hypothesized Mean Difference 0df 140t Stat 0.685

P(T<=t) one-tail 0.247t Critical one-tail 1.656

P(T<=t) two-tail 0.495t Critical two-tail 1.977

EXHIBIT C-9B. STATISTICAL ANALYSES - CONTROL HOUSEHOLDS

WITH LAWN METERS, PRE- VS. POST-EVALUATION OTHER WATER USEt-Test: Two-Sample Assuming Unequal Variances

Pre Post

Mean 260.327 260.448

Variance 24355.544 15149.762

Observations 64 64

Hypothesized Mean Difference 0df 120

t Stat -0.005P(T<=t) one-tail 0.498t Critical one-tail 1.658P(T<=t) two-tail 0.996t Critical two-tail 1.980


EXHIBIT C-10A. STATISTICAL ANALYSES - PRE-EVALUATION TOTAL WATER

USE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Pre Controls Pre

Mean 472.953 402.861

Variance 62144.697 73123.046

Observations 42 48


EXHIBIT C-10B. STATISTICAL ANALYSES - POST-EVALUATION TOTAL WATER

USE, PARTICIPANT VS. CONTROL HOUSEHOLDS WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

Participant Post Controls Post

Mean 366.388 367.501

Variance 41218.348 59082.194

Observations 42 48

Hypothesized Mean Difference 0

df 88t Stat -0.024P(T<=t) one-tail 0.491t Critical one-tail 1.662P(T<=t) two-tail 0.981t Critical two-tail 1.987


EXHIBIT C-11A. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS' PRE-EVALUATION TOTAL WATER USE, WITH VS. WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

without irrig. meter with inig. meterMean 472.953 790.258Variance 62144.697 147255.331Observations 42 72Hypothesized Mean Difference 0df 111t Stat -5.345P(T<=t) one-tail 0.000t Critical one-tail 1.659P(T<=t) two-tail 0.000t Critical two-tail 1.982

EXHIBIT C-11 B. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS'POST-EVALUATION TOTAL WATER USE, WITH VS. WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

without irrig. meter with irrig. meterMean 366.388 562.161Variance 41218.348 69038.616Observations 42 72Hypothesized Mean Difference 0df 103t Stat -4.444P(T<=t) one-tail 0.000t Critical one-tail 1.660P(T<=t) two-tail 0.000t Critical two-tail 1.983


EXHIBIT C-12A. STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' PRE-EVALUATION TOTAL WATER USE, WITH VS. WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances


EXHIBIT C-12B. STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' POST-EVALUATION TOTAL WATER USE, WITH VS. WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances



EXHIBIT C-13A. STATISTICAL ANALYSES - PARTICIPANT HOUSEHOLDS'WITHOUT LAWN METERS, PRE- VS. POST-EVALUATION TOTAL WATER USEt-Test: Two-Sample Assuming Unequal Variances


EXHIBIT C-13B. STATISTICAL ANALYSES - CONTROL HOUSEHOLDS' WITHOUTLAWN METERS, PRE- VS. POST-EVALUATION TOTAL WATER USEt-Test: Two-Sample Assuming Unequal Variances



EXHIBIT C-14A. STATISTICAL ANALYSES - DIFFERENCE BETWEENPARTICIPANT HOUSEHOLDS' PRE- AND POST-EVALUATION TOTALWATER USE WITH VS. WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances


EXHIBIT C-14B. STATISTICAL ANALYSES - DIFFERENCE BETWEENCONTROL HOUSEHOLDS' PRE- AND POST-EVALUATION TOTALWATER USE, WITH VS. WITHOUT LAWN METERSt-Test: Two-Sample Assuming Unequal Variances

without irrig. meter with irrig. meterMean 35.361 157.586Variance 53929.920 69459.289Observations 48 64Hypothesized Mean Difference 0-df 107t Stat -2.601P(T<=t) one-tail 0.005t Critical one-tail 1.659P(T<=t) two-tail 0.011t Critical two-tail 1.982


DAVIS ISLAND PARTICIPANTS' PRE-EVALUATIONTOTAL WATER USE

2000

1750

S 1500

1250 *

0 1000

S500 * * * * 4*250 * Mean * * *

0

FIGURE C-1A DAVIS ISLAND PARTICIPANT HOUSEHOLDS' AVERAGE PRE-EVALUATION TOTAL WATER USE (114 HOMES).

DAVIS ISLAND CONTROLS' PRE-EVALUATIONTOTAL WATER USE

2000 -

1750-

m 1500- • * •

% 1250- * * *

0 1000- . ** * 4750t- * Mean , * *

( 500 * *

250 -4 *

0

FIGURE C-1B DAVIS ISLAND CONTROL HOUSEHOLDS' AVERAGE PRE-EVALUATION TOTAL WATER USE (112 HOMES).

Figures C-1 to C-3Page 1 of 3

DAVIS ISLAND PARTICIPANTS' POST-EVALUATIONTOTAL WATER USE

2000

1750

" 1500

S1250

1000 .

S750- p

2500 - * Mean * **250 ** *' * .

0*

FIGURE C-2A DAVIS ISLAND PARTICIPANT HOUSEHOLDS' AVERAGE POST-EVALUATION TOTAL WATER USE (114 HOMES).

DAVIS ISLAND CONTROLS' POST-EVALUATIONTOTAL WATER USE

2000

1750-

I 1500 -

S1250 -

o 1000- *

75 * Mean • •2500

0 . . * ...* , .- . . , .*

FIGURE C-2B DAVIS ISLAND CONTROL HOUSEHOLDS' AVERAGE POST-EVALUATION TOTAL WATER USE (112 HOMES).


DAVIS ISLAND PARTICIPANTS' DIFFERENCE BETWEEN PRE-AND POST-EVALUATION TOTAL WATER USE

1000

S 600 *

i *Mean200

S-200

-600

-1000

FIGURE C-3A DIFFERENCE BETWEEN DAVIS ISLAND PARTICIPANTHOUSEHOLDS' AVERAGE PRE- AND POST-EVALUATIONTOTAL WATER USE (114 HOMES).

DAVIS ISLAND CONTROLS' DIFFERENCE BETWEEN PRE-AND POST-EVALUATION TOTAL WATER USE

1000

600

U 200 - -- ,, Me»an_ . e ^ .

0 v 4

-200 ••

-600

-1000

FIGURE C-3B DIFFERENCE BETWEEN DAVIS ISLAND CONTROLHOUSEHOLDS' AVERAGE PRE-AND POST-EVALUATIONTOTAL WATER USE (113 HOMES).


APPENDIX C, TABLE C-1A. BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS (March 1993 - July 1994).

House Evaluation Dates Meter 1993 Average Gallons Per Household 1994 Average Gallons Per Household No. No. Total Household Water UseNo. Site Visit Report Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

1 4/7/94 4/7/94 2 68068 89012 78540 67320 75548 77044 12 365 455532 37961 12482 4/7/94 4/7/94 2 14960 50864 117436 33660 35904 32164 12 365 284988 23749 7813 4/8/94 4/8/94 1 16456 29172 32912 11220 18700 11220 12 365 119680 9973 3284+5 4/4/94, 4/4/94 1 7480 18700 18700 11968 17952 11968 12 365 86768 7231 2386 4/4/94 4/4/94 2 48620 87516 74052 44132 59092 38148 12 365 351560 29297 9637 4/5/94 4/5/94 1 2992 . 5236 5236 5236 4488 3740 12 365 26928 2244 748+9+

10 4/6/94 4/6/94 2 17952 41140 27676 10472 22440 14212 12 365 133892 11158 36711 4/7/94 4/7/94 1 28424 26180 23936 12716 23936 16456 12 365 131648 10971 36112 4/7/94 4/7/94 2 53706 29172 40392 35156 38148 41140 12 365 237714 19810 65113 4/8/94 4/26/94 1 17204 53856 36652 17204 19448 20944 12 365 165308 13776 45314 4/8/94 4/26/94 2 32912 67320 68816 19448 36652 34408 12 365 259556 21630 71115 4/14/94 4/14/94 1 45628 42636 37400 31416 42636 35904 12 365 235620 19635 64616 4/14/94 4/18/94 2 35904 61336 39644 15708 21692 22440 12 365 196724 16394 539

17 4/15/94 4/18/94 2 6732 35904 64328 27676 32912 21692 12 365 189244 15770 518

18 4/15/94 4/15/94 2 29920 18700 41140 26180 24684 42636 12 365 183260 15272 50219 4/13/94 4/13/94 1 67320 50864 83776 59840 74052 77792 12 365 413644 34470 113320 4/13/94 4/6/94 1 11968 12716 14212 31416 45628 29172 12 365 145112 12093 398

21 4/13/94 4/13/94 1 35156 64328 59092 35156 77792 37400 12 365 308924 25744 84622 4/14/94 4/14/94 2 30668 82280 78540 86020 118932 72556 12 365 468996 39083 128523 4/14/94 4/18/94 1 11220 23936 29172 24684 17952 17204 12 365 124168 10347 340

24 4/14/94 4/14/94 2 11220 42636 49368 35904 74052 58344 12 365 271524 22627 74425 4/15/94 4/18/94 2 38896 44880 39644 26928 37400 37400 12 365 225148 18762 61726 4/15/94 4/19/94 2 32912 62084 60588 42636 57596 31416 12 365 287232 23936 78727 4/21/94 4/21/94 2 50916 87516 89012 72556 49368 41140 12 365 390508 32542 107028 4/21/94 4/21/94 2 14212 47124 55352 23188 38148 13464 12 365 191488 15957 525

29 4/22/94 4/22/94 2 73304 84524 54604 58344 52360 40392 12 365 363528 30294 99630 4/22/94 4/22/94 1 10472 29172 17952 9724 22440 11968 12 365 101728 8477 27931 #32 4/18/94 4/18/94 2 128656 85272 195228 92752 119680 100232 12 365 721820 60152 197833 4/19/94 4/19/94 1 38896 56848 73304 41140 50116 39644 12 365 299948 24996 82234 #35 4/20/94 4/20/94 2 25432 53108 34408 20944 39644 30668 12 365 204204 17017 55936 4/20/94 4/26/94 1 20944 47124 64328 43384 44880 43384 12 365 264044 22004 72337 4/20/94 4/25/94 1 14212 20944 18700 8976 19448 16456 12 365 98736 8228 27138 ?39 +

40 4/23/94 4/25/94 2 41888 89760 75548 38148 65824 30668 12 365 341836 28486 93741 4/25/94 4/25/94 2 62084 84524 28424 19448 45628 48620 12 365 288728 24061 79142 4/25/94 4/25/94 2 39644 43384 26928 26928 32912 74800 12 365 244596 20383 67043 4/26/94 4/26/94 2 24684 27676 20196 16456 29172 25432 12 365 143616 11968 393444546 +

47 4/27/94 4/27/94 2 53108 62832 62084 45628 57596 43384 12 365 324632 27053 88948 4/27/94 4/27/94 1 25432 29920 25432 12716 21692 13464 12 365 128656 10721 35249 5/2/94 5/2/94 2 46376 37400 51612 54604 71060 63580 12 365 324632 27053 88950 5/2/94 5/3/94 1 29172 28424 14960 29172 21692 11968 12 365 135388 11282 37151 5/3/94 5/3/94 1 2992 7480 14960 14212 24684 22440 12 365 86768 7231 23852 5/3/94 5/9/94 2 44880 84524 127160 47872 86020 31416 12 365 421872 35156 1156

TABLEC1A.XLSPage 1 of 4

APPENDIX C, TABLE C-1A. (CONTINUED)

House Evaluation Dates Meter 1993 Average Gallons Per Household 1994 Average Gallons Per Household No. No. Total Household Water Use

No. Site Visit Report Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-AprApr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

53+

54 #55 5/4/94 5/4/94 2 47872 35904 38148 47872 57596 44880 12 365 272272 22689 746

56 5/4/94 5/4/94 2 29920 38148 35156 25432 29172 23936 12 365 181764 15147 498

57 +

58 5/5/94 5/5/94 1 14212 24684 29172 3740 9724 12716 12 365 94248 7854 258

59 5/6/94 5/8/94 2 151096 88264 71060 53108 94248 51612 12 365 509388 42449 1396

60 +

61 #62 #63 #64 5/10/94 5/10/94 2 34408 59840 59840 61336 27676 36652 12 365 279752 23313 766

65 5/11/94 5/11/94 2 54604 38148 42636 37400 33660 42636 12 365 249084 20757 682

66 +

67 +

68 5/12/94 5/25/94 2 44132 31416 19448 16456 12716 31416 12 365 155584 12965 426

69 5/16/94 5/16/94 2 92752 96492 67320 92752 56100 100980 12 365 506396 42200 1387

70 5/16/94 5/16/94 2 18700 93500 56848 13464 52360 77044 12 365 311916 25993 855

71 5/17/94 5/17/94 2 29920 31416 32164 46376 80784 41140 12 365 261800 21817 717

72 5/17/94 5/17/94 1 54604 32912 34408 39644 41140 40392 12 365 243100 20258 666

73 #74 5/18/94 5/18/94 2 95744 74052 47124 41140 25432 40392 12 365 323884 26990 887

75 5/18/94 5/18/94 2 26180 26180 20944 31416 13464 14212 12 365 132396 11033 363

76 5/18194 5/18/94 2 65076 70312 61336 70312 53108 57596 12 365 377740 31478 1035

77 5/19/94 5/24/94 2 29920 37400 34408 33660 41140 29172 12 365 205700 17142 564

78 5/23/94 5/23/94 2 83776 89760 34408 78540 72556 64328 12 365 423368 35281 1160

79 +

80 5/24/94 5/24/94 1 19448 14212 10472 14212 11220 10472 12 365 80036 6670 219

81 5/24/94 5/24/94 2 54604 57596 62084 44880 71060 41888 12 365 332112 27676 910

82 ?83 +

84 5/25/94 5/25/94 1 44880 34408 22440 15708 35156 29920 12 365 182512 15209 500

85 5/25/94 5/25/94 2 94996 74800 67320 35156 43384 81532 12 365 397188 33099 1088

86 @87 #88 5/31/94 6/7/94 2 29920 54604 17952 11220 15708 9724 12 365 139128 11594 381

89 +

90 6/1/94 6/1/94 2 139876 118184 74800 108325 101728 107712 12 365 650625 54219 1783

91 6/1/94 6/2/94 2 121924 121924 21692 72556 14960 35156 12 365 388212 32351 1064

92 6/2/94 6/2/94 2 43384 71808 27676 29172 26928 43384 12 365 242352 20196 664

93 6/2/94 6/2/94 1 11220 13464 9724 13464 10472 11220 12 365 69564 5797 191

94 6/2/94 6/6/94 1 86020 80036 71060 59840 74052 83028 12 365 454036 37836 1244

95 6/3/94 6/3/94 1 12716 53856 25432 10472 5984 41888 12 365 150348 12529 412

96 +

97 #98 6/7/94 6/19/94 1 31416 31416 17204 20944 14960 41888 12 365 157828 13152 432

99 6/8/94 6/8/94 2 23936 27676 3740 7480 5984 25432 12 365 94248 7854 258

100 6/8/94 6/8/94 3 37400 32164 24684 31416 40392 25432 12 365 191488 15957 525

101 6/8/94 6/28/94 1 5984 8228 18700 20196 15708 20196 12 365 89012 7418 244

102 6/9/94 6/24/94 2 39644 63580 39644 52360 41888 46376 12 365 283492 23624 777

103 6/9/94 6/15/94 2 54604 49368 21692 17204 11968 14960 12 365 169796 14150 465

104 6/11/94 6/15/94 2 141372 118184 83028 128656 100980 102476 12 365 674696 56225 1848




No. Site Visit Report Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

105 6/14/94 6/14/94 2 65076 66572 53108 32164 29920 35904 12 365 282744 23562 775

106 6/14/94 6/14/94 2 81532 104720 50864 ;77044 71808 50864 12 365 436832 36403 1197

107 6/15/94 6/19/94 1 10472 17204 14960 17952 15708 27676 12 365 103972 8664 285

108 +109110 7/5/94 7/8/94 2 11220 11968 8976 8228 17952 29920 12 365 88264 7355 242

111 7/5/94 7/5/94 2 47872 59840 48620 32912 61336 51612 12 365 302192 25183 828

112 7/6/94 7/6/94 2 53108 18700 18700 15708 22440 31416 12 365 160072 13339 439

113 7/7/94 7/7/94 2 35904 18700 26928 15708 40392 37400 12 365 175032 14586 480

114 7/7/94 7/7/94 1 83776 33660 8976 5236 14960 60588 12 365 207196 17266 568

115 +116 7/11/94 7/11/94 2 35904 23936 16456 17204 32912 29172 12 365 155584 12965 426

117 +118 #119 7/13/94 7/13/94 1 8228 8228 20196 40392 22440 23936 12 365 123420 10285 338

120 7/13/94 7/13/94 2 19448 10472 14212 7480 15708 19448 12 365 86768 7231 238

121 +122 7/14/94 7/14/94 2 20196 18700 17952 18700 20196 44132 12 365 139876 11656 383

123 7/14/94 7/20/94 1 46376 20944 9724 14212 9724 29920 12 365 130900 10908 359

124 7/18/94 7/18/94 1 29920 29172 6732 15708 12716 32164 12 365 126412 10534 346

125 7/18/94 7/18/94 2 76296 54604 28424 11968 30668 48620 12 365 250580 20882 687

126 7/19/94 7/31/94 2 121924 89012 82280 66572 76296 100980 12 365 537064 44755 1471

127 7/19/94 8/1/94 1 44880 9724 39644 14960 17204 41888 12 365 168300 14025 461

128 +129 +130 7/20/94 7/20/94 1 47124 26180 34408 23188 38896 37400 12 365 207196 17266 568

131 7/21/94 7/25/94 2 39644 19448 10472 18700 27676 44132 12 365 160072 13339 439

132 7/25/94 7/25/94 2 58344 57596 58344 56848 59092 54604 12 365 344828 28736 945

133 +134 #135 +136 #137 #138 7/29/94 8/1/94 1 32164 20944 11968 12716 11968 23188 12 365 112948 9412 309

139 ?140 +141 8/2/94 8/9/94 1 59092 39644 43384 17952 24684 41888 12 365 226644 18887 621

142 8/2/94 8/10/94 2 115940 44880 65076 47124 48620 73304 12 365 394944 32912 1082

143 8/8/94 8/20/94 2 35156 26180 30668 29172 27676 32164 12 365 181016 15085 496

144 8/9/94 8/9/94 1 14960 9724 23936 8976 24684 26180 12 365 108460 9038 - 297

145 *146 8/9/94 8/9/94 1 57596 47124 55352 47872 53108 53856 12 365 314908 26242 863

147 8/9/94 8/11/94 2 50116 11220 49368 38896 46376 57596 12 365 253572 21131 695

148 8/11/94 8/11/94 2 34408 19448 47124 34408 35156 42636 12 365 213180 17765 584

149 8/11/94 8/11/94 2 41888 13464 38148 33660 32912 6732 12 365 166804 13900 457

150 8/12/94 8/18/94 1 54604 30668 45628 35156 52360 47124 12 365 265540 22128 728

151 8/12/94 8/16/94 2 112200 77044 107712 27676 96492 74800 12 365 495924 41327 1359

152 8/17/94 8/17/94 3 19448 5984 16456 12716 22440 38896 12 365 115940 9662 318

153 8/17/94 8/17/94 1 25432 11220 96492 34408 34408 24684 12 365 226644 18887 621

154 +155 8/18/94 8/20/94 1 50116 32912 33660 32164 29172 33660 12 365 211684 17640 580

156 8/18/94 8/18/94 1 14212 34408 25432 35904 35904 46376 12 365 192236 16020 527




No. Site Visit Report Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

157 8/18/94 8/20/94 2 132396 53856 105468 24684 58344 68816 12 365 443564 36964 1215

158 8/20/94 8/20/94 2 12716 29172 33660 7480 17204 21692 12 365 121924 10160 334

159 +160 8/27/94 8/27/94 1 17204 11220 22440 20944 31416 26928 12 365 130152 10846 357

n 114 114 114 19 29 42 39 65 49 65 49 65 49 65 49 46 20 23 10 114 114 114 114 114

Sum 807743 1013540 2290376 1878228 3668192 2109360 2395844 1245420 2790788 2047141 2277660 1534148 1760044 804100 1002320 393448 1368 41610 28018352 2334863 76763

Avg 5/31/94 6/2/94 42513 34950 54533 48160 56434 43048 36859 25417 42935 41778 35041 31309 38262 40205 43579 39345 12 365 245775 20481 673

Min 4/4/94 4/4/94 2992 7480 2992 5984 5236 8228 5236 3740 4488 7480 3740 5984 10472 11220 19448 6732 12 365 26928 2244 74

Max 8/27/94 8/27/94 128656 151096 141372 139876 195228 127160 92752 86020 128656 118932 100980 101728 102476 107712 100980 74800 12 365 721820 60152 1978

St.Dev 2/13/00 2/13/00 29924 28950 29223 30366 33671 31581 20140 20156 26817 28638 22717 22598 21312 25912 17576 22784 0 0 135938 11328 372

# - Household omitted because no water use was recorded for two or more months.* - Duplicate household.+ - Household omitted because water account numbers changed sometime during the study period.? - Household omitted because water use data were not available for various reasons.

@ - Household omitted because they voluntarily removed themselves from the program.


APPENDIX C, TABLE C-1B. BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS CONTROL HOUSEHOLDS (March 1993 - July 1994).

House Meter 1993 Average Gallons Per Household 1994 Average Gallons Per Household No. No. Total Household Water UseNo. Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

1.2 +2.2 2 28948 62832 46376 34408 60588 38148 12 365 271300 22608 7433.2 +4.2 +5.2 2 24684 74052 65076 30668 35904 17204 12 365 247588 20632 678

6.2 1 11968 21692 14212 11220 14960 14960 12 365 89012 7418 244

7.2 +8.2 +9.2 2 16456 27676 41140 38148 80036 44880 12 365 248336 20695 680

10.2 #11.2 1 32164 29920 25432 11220 14960 11968 12 365 125664 10472 344

12.2 ?13.2 2 28424 44880 50116 59092 37400 28424 12 365 248336 20695 680

14.2 3 14212 31416 30668 14212 11220 8976 12 365 110704 9225 303

15.2 2 26928 67320 44880 8228 14960 14212 12 365 176528 14711 484

16.2 1 32164 32912 25432 21692 22440 7480 12 365 142120 11843 389

17.2 +18.2 1 15708 44880 26928 22440 24684 17952 12 365 152592 12716 418

19.2 +20.2 +21.2 ?22.2 #23.2 1 20944 23188 13464 16456 8976 7480 12 365 90508 7542 248

24.2 #25.2 #26.2 +27.2 2 13090 26180 41888 14212 20196 14960 12 365 130526 10877 358

28.2 2 10472 25432 30668 14960 14212 13464 12 365 109208 9101 299

29.2 2 60588 44132 26180 17204 17204 34408 12 365 199716 16643 547

30.2 #31.2 +32.2 2 31416 58344 50864 63580 44132 51612 12 365 299948 24996 822

33.2 1 19448 37400 26180 19448 25432 15708 12 365 143616 11968 393

34.2 #35.2 2 13464 26180 5984 7480 54604 17204 12 365 124916 10410 342

36.2 1 2992 5236 5236 5236 8976 9724 12 365 37400 3117 102

37.2 1 2244 5236 5236 2992 4488 3740 12 365 23936 1995 66

38.2 1 23188 32912 42636 30668 32164 24684 12 365 186252 15521 51039.2 +40.2 2 41140 66572 71060 36652 36652 34408 12 365 286484 23874 785

41.2 2 68816 80784 72556 73304 83776 64328 12 365 443564 36964 1215

42.2 2 30668 62832 65824 51612 65076 63580 12 365 339592 28299 930

43.2 1 16456 30668 28424 28424 20944 22440 12 365 147356 12280 404

44.2 2 22440 35904 34408 17952 27676 21692 12 365 160072 13339 439

45.2 2 14960 50864 45628 42636 43384 47124 12 365 244596 20383 670

46.2 1 26180 26928 20944 14960 25432 20196 12 365 134640 11220 369

47.2 1 5984 58344 70312 59840 81532 44132 12 365 320144 26679 877

48.2 2 28424 84524 62832 48620 89760 41140 12 365 355300 29608 973

49.2 1 11220 16456 12716 9724 7480 12716 12 365 70312 5859 193

50.2 ?51.2 +52.2 2 14212 65076 56100 61336 68816 92004 12 365 357544 29795 980

TABLEC1B.XLSPana 1 nf 4

APPENDIX C, TABLE C-1B. (CONTINUED)

House Meter 1993 Average Gallons Per Household 1994 Average Gallons Per Household No. No. Total Household Water Use

No. Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

53.2 1 17204 11220 5984 6732 2244 6732 12 365 50116 4176 137

54.2 1 9724 9724 12716 14212 15708 12716 12 365 74800 6233 205

55.2 2 14960 29172 10472 5236 16456 11220 12 365 87516 7293 240

56.2 1 32912 53856 42636 23188 22440 14960 12 365 189992 15833 521

57.2 2 65076 54604 17952 14212 29920 13464 12 365 195228 16269 535

58.2 2 17952 11968 20196 13464 14960 14212 12 365 92752 7729 254

59.2 2 38148 65076 50116 45628 11968 62084 12 365 273020 22752 748

60.2 1 140624 112948 83776 75548 51612 67320 12 365 531828 44319 1457

61.2 2 21692 26180 14212 14212 13464 18700 12 365 108460 9038 297

62.2 2 53856 52360 44880 68068 65076 57596 12 365 341836 28486 937

63.2 2 109956 54604 47872 63580 30668 58344 12 365 365024 30419 1000

64.2 2 38148 28424 77792 83776 109208 139876 12 365 477224 39769 1307

65.2 #66.2 #

67.2 1 12716 54604 77792 71060 38896 32164 12 365 287232 23936 787

68.2 2 39644 45628 1496 11220 20944 41888 12 365 160820 13402 441

69.2 2 119680 100232 92752 13464 28424 35156 12 365 389708 32476 1068

70.2 2 87516 100232 201960 59840 77792 29172 12 365 556512 46376 1525

71.2 2 46376 54604 41140 26928 27676 29172 12 365 225896 18825 619

72.2 2 69564 45628 51612 48620 59840 57596 12 365 332860 27738 912

73.2 1 14960 18700 21692 20944 23188 21692 12 365 121176 10098 332

74.2 #

75.2 1 12716 9724 7480 11220 9724 6732 12 365 57596 4800 158

76.2 1 15708 14212 13464 16456 14960 17204 12 365 92004 7667 252

77.2 +78.2 1 13464 9724 5984 5984 10472 10472 12 365 56100 4675 154

79.2 2 41140 43384 35904 18700 23936 23188 12 365 186252 15521 510

80.2 2 83776 68068 59092 68816 77044 62084 12 365 418880 34907 1148

81.2 1 18700 11968 97988 42636 16456 23936 12 365 211684 17640 580

82.2 2 17952 79288 42636 19448 25432 11968 12 365 196724 16394 539

83.2 +84.2 +85.2 1 27676 19448 22440 20944 27676 22440 12 365 140624 11719 385

86.2 2 74052 67320 48620 72556 75548 66572 12 365 404668 33722 1109

87.2 1 26180 13464 17204 18700 18700 29172 12 365 123420 10285 338

88.2 2 92752 98736 65076 35156 87516 76296 12 365 455532 37961 1248

89.2 a90.2 +91.2 1 30668 26928 14212 29172 21692 36652 12 365 159324 13277 437

92.2 +93.2 1 25432 14212 6732 12716 7480 14212 12 365 80784 6732 221

94.2 1 33660 18700 6732 15708 8976 12716 12 365 96492 8041 264

95.2 2 82280 73304 49368 71808 34408 94996 12 365 406164 33847 1113

96.2 2 74052 69564 29172 37400 34408 66572 12 365 311168 25931 853

97.2 1 22440 17952 8228 10472 8228 14960 12 365 82280 6857 225

98.2 1 11220 15708 8976 23188 10472 8228 12 365 77792 6483 213

99.2 ?100.2 2 27676 31416 16456 16456 12716 19448 12 365 124168 10347 340

101.2 2 53856 56100 48620 36652 24684 35156 12 365 255068 21256 699

102.2 2 94996 50116 33660 46376 23188 66572 12 365 314908 26242 863

103.2 +104.2 +

TABLEC1B.XLSPage 2 of 4



105.2 2 53108 8976 11220 38896 44132 35156 12 365 191488 15957 525

106.2 +107.2 1 37400 17952 22440 11968 3740 30668 12 365 124168 10347 340108.2 1 50116 55352 32164 49368 48620 45628 12 365 281248 23437 771109.2 ?110.2 1 55352 33660 50864 47872 43384 44880 12 365 276012 23001 756

111.2 1 24684 18700 23188 14212 26928 43384 12 365 151096 12591 414

112.2 1 78540 47124 96492 62084 65076 65076 12 365 414392 34533 1135113.2 #114.2 2 95744 67320 75548 54604 60588 95744 12 365 449548 37462 1232

115.2 +116.2 1 41888 25432 29920 23936 23936 40392 12 365 185504 15459 508117.2 1 56848 25432 16456 20944 35904 53856 12 365 209440 17453 574118.2 2 62832 68068 62084 65076 41888 51612 12 365 351560 29297 963

119.2 2 75548 19448 24684 17952 35904 41140 12 365 214676 17890 588

120.2 1 5984 5236 5236 4488 9724 15708 12 365 46376 3865 127

121.2 +122.2 2 17952 16456 15708 13464 16456 17952 12 365 97988 8166 268

123.2 2 13464 7480 3740 5984 5984 12716 12 365 49368 4114 135

124.2 +125.2 2 70312 50864 48620 42636 52360 83028 12 365 347820 28985 953

126.2 2 131648 72556 100232 56100 77792 97988 12 365 536316 44693 1469

127.2 1 17204 5984 4488 12716 15708 20944 12 365 77044 6420 211128.2 #129.2 2 44880 23936 22440 29172 22440 23188 12 365 166056 13838 455130.2 1 56848 34408 32164 27676 38148 35904 12 365 225148 18762 617

131.2 2 45628 28424 33660 26928 29172 48620 12 365 212432 17703 582

132.2 2 107712 41140 29920 27676 33660 23188 12 365 263296 21941 721133.2 1 17204 18700 11220 17204 23936 50116 12 365 138380 11532 379134.2 #135.2 1 32912 34408 10472 13464 10472 15708 12 365 117436 9786 322

136.2 2 145860 111452 65076 99484 94996 56100 12 365 572968 47747 1570137.2 1 10472 5236 4488 5236 9724 7480 12 365 42636 3553 117138.2 1 31416 29920 15708 21692 56848 59092 12 365 214676 17890 588139.2 2 34408 24684 28424 17952 30668 34408 12 365 170544 14212 467140.2 2 56848 30668 29920 26180 47124 48620 12 365 239360 19947 656141.2 1 33660 19448 21692 26928 27676 32912 12 365 162316 13526 445142.2 2 171292 95744 125664 97240 124168 133892 12 365 748000 62333 2049143.2 2 17952 15708 17204 15708 17952 8228 12 365 92752 7729 254144.2 +145.2 ?146.2 1 11968 5984 12716 5236 4488 5984 12 365 46376 3865 127147.2 #148.2 2 113696 68068 110704 86768 65076 122672 12 365 566984 47249 1553149.2 #150.2 2 81532 64328 53108 60588 55352 60588 12 365 375496 31291 1029151.2 2 5236 2992 5236 9724 38896 46376 12 365 108460 9038 297152.2 #153.2 1 19448 8976 16456 11968 38148 23188 12 365 118184 9849 324154.2 2 136136 17952 71060 165308 39644 28424 12 365 458524 38210 1256155.2 +156.2 1 26928 11220 14212 13464 29172 35904 12 365 130900 10908 359




No. Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

157.2 2 44132 23936 21692 18700 47124 40392 12 365 195976 16331 537

158.2 2 61336 31416 38148 35904 35156 39644 12 365 241604 20134 662

159.2 2 47872 29920 21692 19448 41888 45628 12 365 206448 17204 566

160.2 +

n 112 14 27 39 42 63 49 63 49 63 49 63 49 49 22 24 7 112 112 112 112 112

Sum 365174 732292 1828860 1981452 2766104 2246992 1959012 1447380 2140028 1832600 2020348 1418956 1810908 910316 1029996 460020 1344 40880 24950438 2079203 68357

Avg 26084 27122 46894 47177 43906 45857 31095 29538 33969 37400 32069 28958 36957 41378 42917 65717 12 365 222772 18564 610

Min 2992 2244 5236 5236 5236 5236 1496 2992 4488 4488 2244 3740 4488 7480 5984 23188 12 365 23936 1995 66

Max 68816 92752 140624 145860 136136 201960 97988 95744 100232 125664 165308 97240 139876 124168 97988 133892 12 365 748000 62333 2049

St.Dev 19059 20478 31945 29207 30959 39322 23606 22494 24798 30630 27347 24915 24683 28690 24571 43685 0 0 142511 11876 390

# - Household omitted because no water use was recorded for two or more months.* - Duplicate household.+ - Household omitted because water account numbers changed sometime during the study period.

? - Household omitted because water use data were not available for various reasons.a - anomalous water usage


APPENDIX C, TABLE C-2A. BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS (June 1994 - October 1995).


No. Site Visit Report Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Mnths. Days Gals g/m g/d

1 4/7/94 4/7/94 2 39644 32164 45628 44132 34408 4488 12 365 200464 16705 549

2 4/7/94 4/7/94 2 17952 16456 43384 16456 23188 23188 12 365 140624 11719 385

3 4/8/94 4/8/94 1 11220 7480 19448 8228 14960 22440 12 365 83776 6981 230

4+5 4/4/94 414/94 1 20196 14212 14960 14960 11968 12716 12 365 89012 7418 244

6 4/4/94 4/4/94 2 44132 22440 44880 53108 35904 26180 12 365 226644 18887 621

7 4/5/94 4/5/94 1 3740 7480 5236 2992 2992 2992 12 365 25432 2119 70

8+9+

10 4/6/94 4/6/94 2 37400 14960 11220 25432 14212 29920 12 365 133144 11095 365

11 4/7/94 4/7/94 1 22440 23188 25432 28424 18700 22440 12 365 140624 11719 385

12 4/7/94 4/7/94 2 23188 23188 29172 27676 23188 30459 12 365 156871 13073 430

13 4/8/94 4/26/94 1 31416 13464 8228 22440 17952 14960 12 365 108460 9038 297

14 4/8/94 4/26/94 2 24684 14212 13464 31416 8228 20944 12 365 112948 9412 309

15 4/14/94 4/14/94 1 38896 31416 28424 37400 19448 29920 12 365 185504 15459 508

16 4/14/94 4/18/94 2 38896 26928 14960 23936 17204 29172 12 365 151096 12591 414

17 4/15/94 4/18/94 2 15708 9724 20196 13464 8976 29172 12 365 97240 8103 266

18 4/15/94 4/15/94 2 28424 20196 23188 41140 35904 38148 12 365 187000 15583 512

19 4/13/94 4/13/94 1 22440 17952 36652 32912 40392 37400 12 365 187748 15646 514

20 4/13/94 4/6/94 1 48620 43384 47124 55352 45628 36652 12 365 276760 23063 758

21 4/13/94 4/13/94 1 23188 5236 23188 32164 31416 34408 12 365 149600 12467 410

22 4/14/94 4/14/94 2 59840 49368 32912 57596 59840 53856 12 365 313412 26118 859

23 4/14/94 4/18/94 1 28424 35156 41888 32912 22440 33660 12 365 194480 16207 533

24 4/14/94 4/14/94 2 52360 12716 13464 53856 33660 51612 12 365 217668 18139 596

25 4/15/94 4/18/94 2 41140 26928 19448 31416 16456 28424 12 365 163812 13651 449

26 4/15/94 4/19/94 2 40392 18700 49368 32164 38896 50116 12 365 229636 19136 629

27 4/21/94 4/21/94 2 32164 26180 55352 58344 63580 61336 12 365 296956 24746 814

28 4/21/94 4/21/94 2 23188 9724 24235 12716 27676 44880 12 365 142419 11868 390

29 4/22/94 4/22/94 2 71808 42636 60588 47872 53108 50116 12 365 326128 27177 894

30 4/22/94 4/22/94 1 22440 4488 5984 7480 8976 8976 12 365 58344 4862 160

31 #32 4/18/94 4/18/94 2 35156 29172 47872 65076 56848 58344 12 365 292468 24372 801

33 4/19/94 4/19/94 1 46376 29920 30668 35156 35156 38148 12 365 215424 17952 590

34 #35 4/20/94 4/20/94 2 34408 27676 8228 38148 30668 29172 12 365 168300 14025 461

36 4/20/94 4/26/94 1 10472 8228 9724 8228 8228 25432 12 365 70312 5859 193

37 4/20/94 4/25/94 1 17952 13464 6732 38148 14212 7480 12 365 97988 8166 268

38 ?39 +

40 4/23/94 4/25/94 2 25432 18700 44132 27676 30668 38148 12 365 184756 15396 506

41 4/25/94 4/25/94 2 29172 17952 61336 25432 23936 41140 12 365 198968 16581 545

42 4/25/94 4/25/94 2 27676 8228 19448 35904 22440 23188 12 365 136884 11407 375

43 4/26/94 4/26/94 2 17952 5984 5236 21692 21692 18700 12 365 91256 7605 250

44 #45 #46 +

47 4/27/94 4/27/94 2 56100 35904 17952 67320 30668 42636 12 365 250580 20882 687

48 4/27/94 4/27/94 1 21692 7480 6732 16456 4488 14212 12 365 71060 5922 195

49 5/2/94 5/2/94 2 60588 32164 37400 88264 39644 74052 12 365 332112 27676 910

50 5/2/94 513/94 1 20196 11220 20944 9724 11968 23936 12 365 97988 8166 268

51 5/3/94 5/3/94 1 21692 8976 9724 23936 20196 21692 12 365 106216 8851 291

52 5/3/94 5/9/94 2 31416 45628 73304 38148 55352 65824 12 365 309672 25806 848

TABLEC2A.XLSPane 1 of 4




53 +

54 #55 5/4/94 5/4/94 2 30668 31416 60588 41140 45628 46376 12 365 255816 21318 701

56 5/4/94 5/4/94 2 29172 25432 34408 21692 23936 27676 12 365 162316 13526 445

57 +

58 5/5/94 5/5/94 1 1496 11968 11220 5984 8228 13464 12 365 52360 4363 143

59 5/6/94 5/8/94 2 21692 14212 17204 13464 11220 35904 12 365 113696 9475 311

60 +

61 #62 #63 #64 5/10/94 5/10/94 2 30668 26928 44132 53108 32912 32164 12 365 219912 18326 602

65 5/11/94 5/11/94 2 11968 7480 20196 26928 15693 22440 12 365 104705 8725 287

66 +

67 +

68 5/12/94 5/25/94 2 16456 17204 44132 13464 17204 32164 12 365 140624 11719 385

69 5/16/94 5/16/94 2 52360 29172 77044 24684 35156 62832 12 365 281248 23437 771

70 5/16/94 5/16/94 2 22440 14212 27676 15708 40392 60588 12 365 181016 15085 496

71 5/17/94 5/17/94 2 20944 23188 38148 41140 30668 40392 12 365 194480 16207 533

72 5/17/94 5/17/94 1 18700 .16456 38148 24684 27676 35904 12 365 161568 13464 443

73 #74 5/18/94 5/18/94 2 24684 8228 29920 29920 7480 45628 12 365 145860 12155 400

75 5/18/94 5/18/94 2 11968 7480 23188 16456 10472 19448 12 365 89012 7418 244

76 5/18/94 5/18/94 2 46376 33660 57596 73304 50116 63580 12 365 324632 27053 889

77 5/19/94 5/24/94 2 14212 9724 19448 8976 14212 35904 12 365 102476 8540 281

78 5/23/94 5/23/94 2 39644 44132 53856 50116 42636 89760 12 365 320144 26679 877

79 +

80 5/24/94 5/24/94 1 11220 9724 10472 10472 11968 11968 12 365 65824 5485 180

81 5/24/94 5/24/94 2 48620 26180 41888 30668 38148 46376 12 365 231880 19323 635

82 783 +

84 5/25/94 5/25/94 1 14960 11220 18700 14960 18700 26180 12 365 104720 8727 287

85 5/25/94 5/25/94 2 35156 24684 68068 50864 62084 68816 12 365 309672 25806 848

86 @87 #88 5/31/94 6/7/94 2 44132 25432 14960 11968 17204 53856 12 365 167552 13963 459

89 +

90 6/1/94 6/1/94 2 79288 30668 132396 94248 118932 103972 12 365 559504 46625 1533

91 6/1/94 6/2/94 2 40392 45628 44132 53856 55352 62084 12 365 301444 25120 826

92 6/2/94 6/2/94 2 26928 37400 29920 36652 46376 29920 12 365 207196 17266 568

93 6/2/94 6/2/94 1 11968 11968 10472 8976 8976 7480 12 365 59840 4987 164

94 6/2/94 6/6/94 1 32164 2244 90508 97988 98736 68816 12 365 390456 32538 1070

95 6/3/94 6/3/94 1 11968 33660 27676 16456 51612 29172 12 365 170544 14212 467

96 +

97 #98 6/7/94 6/19/94 1 28424 25432 26928 19448 20196 15708 12 365 136136 11345 373

99 6/8/94 6/8/94 2 3740 23936 5984 5236 13464 7480 12 365 59840 4987 164

100 6/8/94 6/8/94 3 22440 32164 27676 25432 28424 22440 12 365 158576 13215 434

101 6/8/94 6/28/94 1 18700 19448 39644 8228 27676 26180 12 365 139876 11656 383

102 6/9/94 6/24/94 2 21692 33660 53108 32912 35156 38896 12 365 215424 17952 590

103 6/9/94 6/15/94 2 7480 17204 8228 22440 22440 14212 12 365 92004 7667 252

104 6/11/94 6/15/94 2 30668 147356 72556 32912 117436 92752 12 365 493680 41140 1353





105 6/14/94 6/14/94 2 21692 47124 29172 26180 116456 40392 12 365 281016 23418 770

106 6/14/94 6/14/94 2 34408 58344 56100 48620 64328 39644 12 365 301444 25120 826

107 6/15/94 6/19/94 1 12716 18700 18700 17204 14960 15708 12 365 97988 8166 268

108 +109110 7/5/94 7/8/94 2 8228 8228 28424 27676 31416 49368 12 365 153340 12778 420

111 7/5/94 7/5/94 2 23936 37400 26928 39644 51612 16456 12 365 195976 16331 537

112 7/6/94 7/6/94 2 16456 26928 13464 18700 17204 17204 12 365 109956 9163 301

113 7/7/94 7/7/94 2 13464 22440 24684 20196 30668 31416 12 365 .142868 11906 391

114 7/7/94 7/7/94 1 4488 5236 8976 5984 8976 33660 12 365 67320 5610 184

115 +116 7/11/94 7/11/94 2 9724 18700 26180 43384 74052 35904 12 365 207944 17329 570

117 +118 #119 7/13/94 7/13/94 1 29172 20944 47124 35904 33660 47124 12 365 213928 17827 586

120 7/13/94 7/13/94 2 3740 5984 9724 10472 17204 7480 12 365 54604 4550 150

121 +122 7/14/94 7/14/94 2 21692 23188 18700 20196 13464 9724 12 365 106964 8914 293

123 7/14/94 7/20/94 1 34408 86768 15708 19448 10472 9724 12 365 176528 14711 484

124 7/18/94 7/18/94 1 7480 12716 7480 16456 21692 8976 12 365 74800 6233 205

125 7/18/94 7/18/94 2 9724 47124 31416 29920 26928 26928 12 365 172040 14337 471

126 7/19/94 7/31/94 2 23936 93500 60588 57596 56848 49368 12 365 341836 28486 937

127 7/19/94 8/1/94 1 19448 22440 12716 51612 30668 11220 12 365 148104 12342 406

128 +129 +130 7/20/94 7/20/94 1 8228 37400 23188 27676 29172 22440 12 365 148104 12342 406

131 7/21/94 7/25/94 2 7480 15708 17204 17204 30668 17952 12 365 106216 8851 291

132 7/25/94 7/25/94 2 34408 59092 33660 22440 28424 37400 12 365 215424 17952 590

133 +134 #135 +136 #137 #138 7/29/94 8/1/94 1 11968 11968 10472 14212 8228 11968 12 365 68816 5735 189

139 ?140 +141 8/2/94 8/9/94 1 20196 17204 16456 26928 15708 18700 12 365 115192 9599 316

142 8/2/94 8/10/94 2 68068 75548 65076 74800 70312 35904 12 365 389708 32476 1068

143 8/8/94 8/20/94 2 20196 22440 26180 24684 23936 18700 12 365 136136 11345 373

144 8/9/94 8/9/94 1 10472 19448 17204 15708 25432 1496 12 365 89760 7480 .246

145146 8/9/94 8/9/94 1 15708 92004 59840 72556 48620 37400 12 365 326128 27177 894

147 8/9/94 8/11/94 2 27676 45628 60588 53856 65076 26180 12 365 279004 23250 764

148 8/11/94 8/11/94 2 16456 34408 20944 26928 29172 16456 12 365 144364 12030 396

149 8/11/94 8/11/94 2 6732 34408 19448 24684 15708 7480 12 365 108460 9038 297

150 8/12/94 8/18/94 1 27676 21692 14960 35904 29920 23936 12 365 154088 12841 422

151 8/12/94 8/16/94 2 26928 62084 26180 58344 79288 48620 12 365 301444 25120 826

152 8/17/94 8/17/94 3 23936 36652 43384 19448 33660 29920 12 365 187000 15583 512

153 8/17/94 8/17/94 1 5984 25432 11220 21692 27676 5236 12 365 97240 8103 266

154 +155 8/18/94 8/20/94 1 21692 17204 14960 28424 26928 19448 12 365 128656 10721 352

156 8/18/94 8/18/94 1 36652 30668 32164 33660 26180 29920 12 365 189244 15770 .518





157 8/18/94 8/20/94 2 60588 30668 45628 45628 11968 10472 12 365 204952 17079 562

158 8/20/94 8/20/94 2 29920 33660 14960 22440 20196 17952 12 365 139128 11594 381

159 +160 8/27/94 8/27/94 1 6732 23936 11968 14960 17204 5984 12 365 80784 6732 221

n 114 114 114 19 34 37 56 49 65 49 65 49 65 49 65 30 31 12 9 114 114 114 114 114

Sum 642532 945472 916300 1041216 1015036 2261503 1867756 2021096 1282820 1809397 1556588 2534531 1168376 932008 213928 181764 1368 41610 20390323 1699194 55864

Avg 5/31/94 6/2/94 33817 27808 24765 18593 20715 34792 38117 31094 26180 27837 31767 38993 38946 30065 17827 20196 12 365 178862 14905 490

Min 4/4/94 4/4/94 17952 3740 1496 3740 2244 5236 5984 2992 4488 2992 7480 2992 7480 7480 1496 10472 12 365 25432 2119 70

Max 8/27/94 8/27/94 59840 71808 79288 44132 68068 147356 132396 92004 97988 63580 118932 117436 103972 92752 48620 37400 12 365 559504 46625 1533

St.Dev 2/13/00 2/13/00 13136 15486 15969 10240 13369 22963 24766 19655 21162 14292 22861 22502 25219 16894 14490 9030 0 0 94711 7893 259

# - Household omitted because no water use was recorded for two or more months.S- Duplicate household.

+ - Household omitted because water account numbers changed sometime during the study period.

? - Household omitted because water use data were not available for various reasons.

@ - Household omitted because they voluntarily removed themselves from the program.


APPENDIX C, TABLE C-2B. BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS CONTROLS HOUSEHOLDS (June 1994 - October 1995).

House Meter 1994 Average Gallons Per Household 1995 Average Gallons Per Household No. No. Total Household Water UseNo. Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Mnths. Days Gals glm g/d1.2 +2.2 2 94248 15708 45628 29920 30668 42636 12 365 258808 21567 7093.2 +4.2 +5.2 2 23188 9724 20196 28424 29920 38148 12 365 149600 12467 410

6.2 1 14212 14212 14212 13464 14960 22440 12 365 93500 7792 256

7.2 +8.2 +9.2 2 31416 17204 17952 38896 29920 47872 12 365 183260 15272 50210.2 #

11.2 1 24684 13464 7480 12716 5236 14212 12 365 77792 6483 213

12.2 ?

13.2 - 2 50116 26180 17952 24684 29920 32912 12 365 181764 15147 498

14.2 3 23188 2992 2992 26180 11220 5984 12 365 72556 6046 199

15.2 2 53108 2244 6732 31416 17204 47124 12 365 157828 13152 432

16.2 1 32164 5984 6732 26180 7480 14212 12 365 92752 7729 25417.2 +18.2 1 13464 14960 37400 26928 19448 44132 12 365 156332 13028 42819.2 +20.2 +21.2 ?22.2 #23.2 1 100980 57596 28424 42636 30668 30668 12 365 290972 24248 79724.2 #25.2 #26.2 +27.2 2 11968 8976 18700 11220 13464 32164 12 365 96492 8041 26428.2 2 13464 8976 11220 9724 7480 23188 12 365 74052 6171 203

29.2 2 17952 26928 41140 41140 34408 47124 12 365 208692 17391 57230.2 #31.2 +32.2 2 94996 13464 35156 38896 2139 46376 12 365 231027 19252 633

33.2 1 18700 16456 23188 42486 12716 26180 12 365 139726 11644 383

34.2 #35.2 2 29172 8228 7480 5236 8228 53856 12 365 112200 9350 307

36.2 1 11220 9724 26180 20944 20944 21692 12 365 110704 9225 303

37.2 1 4488 2992 4488 8228 4488 2992 12 365 27676 2306 7638.2 1 15708 11968 21692 28424 21692 26180 12 365 125664 10472 34439.2 +40.2 2 26180 11968 13464 15708 11220 89012 12 365 167552 13963 45941.2 2 106964 10472 21692 20196 15708 70312 12 365 245344 20445 672

42.2 2 53108 52360 56848 71060 47124 56100 12 365 336600 28050 922

43.2 1 23936 21692 18700 26180 10472 19448 12 365 120428 10036 330

44.2 2 20944 15708 24684 5236 15708 34408 12 365 116688 9724 320

45.2 2 9724 11220 39644 29920 30668 43384 12 365 164560 13713 45146.2 1 19448 9724 11968 15708 11220 14960 12 365 83028 6919 22747.2 1 72556 36652 15708 50116 43384 47872 12 365 266288 22191 73048.2 2 105468 64328 23188 89012 94996 42636 12 365 419628 34969 115049.2 1 12716 9724 5236 5236 21692 20196 12 365 74800 6233 20550.2 ?51.2 +52.2 2 38896 49368 75548 56848 49368 95744 12 365 365772 30481 1002




No. Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Mnths. Days Gals g/m g/d

53.2 1 5236 3740 4488 5984 5236 6732 12 365 31416 2618 86

54.2 1 31416 10472 16456 20196 13464 22440 12 365 114444 9537 314

55.2 2 - 9724 6732 23936 8976 14212 11220 12 365 74800 6233 205

56.2 1 6732 29172 33660 17204 32164 30668 12 365 149600 12467 410

57.2 2 22440 13464 17204 15708 18700 50116 12 365 137632 11469 377

58.2 2 17204 8228 26180 15708 57596 30668 12 365 155584 12965 426

59.2 2 33660 39644 68816 91256 80784 97240 12 365 411400 34283 1127

60.2 1 23188 23188 47102 35156 26180 70312 12 365 225126 18760 617

61.2 2 11220 7480 20944 10472 13464 17952 12 365 81532 6794 223

62.2 2 30668 17204 53108 75548 68068 67911 12 365 312507 26042 856

63.2 2 33660 17952 29920 23936 19448 44880 12 365 169796 14150 465

64.2 2 154836 24684 35156 93500 84524 89760 12 365 482460 40205 1322

65.2 #

66.2 #67.2 1 36652 37400 44880 26928 108460 85272 12 365 339592 28299 930

68.2 2 23936 13464 11968 40392 10472 45628 12 365 145860 12155 400

69.2 2 47124 29172 30668 40392 41888 51612 12 365 240856 20071 660

70.2 2 22440 21692 20944 20944 38148 37400 12 365 161568 13464 443

71.2 2 45628 22440 27676 32912 56848 89760 12 365 275264 22939 754

72.2 2 59092 58344 52360 53108 37400 46376 12 365 306680 25557 840

73.2 1 22440 20196 21692 22440 18700 19448 12 365 124916 10410 342

74.2 #

75.2 1 23936 14212 17952 9724 11968 20196 12 365 97988 8166 268

76.2 1 19448 17952 21692 10472 11968 17204 12 365 98736 8228 271

77.2 +78.2 1 9724 8976 6732 10472 6732 5236 12 365 47872 3989 131

79.2 2 24684 16456 36652 13464 36652 43384 12 365 171292 14274 469

80.2 2 27676 23936 48620 40392 35904 50864 12 365 227392 18949 623

81.2 1 15708 13464 9724 18700 7480 9724 12 365 74800 6233 205

82.2 2 17204 10472 27676 10472 41140 35156 12 365 142120 11843 389

83.2 +84.2 +85.2 1 25432 3740 20196 11220 26928 32912 12 365 120428 10036 330

86.2 2 78540 34408 77792 68816 63580 77044 12 365 400180 33348 1096

87.2 1 12716 8976 15708 20944 11968 29172 12 365 99484 8290 273

88.2 2 29172 38148 68816 112200 51612 92004 12 365 391952 32663 1074

89.2 a90.2 +91.2 1 10472 12716 31416 11968 19448 35904 12 365 121924 10160 334

92.2 +93.2 1 8228 7480 27676 37400 33660 17952 12 365 132396 11033 363

94.2 1 8228 6732 8976 8228 8976 13464 12 365 54604 4550 150

95.2 2 17952 28424 63580 39644 . 38896 41140 12 365 229636 19136 629

96.2 2 17952 29172 44132 29920 33660 39644 12 365 194480 16207 533

97.2 1 5984 21692 7480 20196 23936 10472 12 365 89760 7480 246

98.2 1 5984 6732 13464 7480 21692 8976 12 365 64328 5361 176

99.2 ?

101.2 2 27676 17204 38148 39644 29172 38896 12 365 190740 15895 523

102.2 2 20944 34408 61336 53108 45628 36652 12 365 252076 21006 691

103.2 +104.2 +



House Meter 1994 Average Gallons Per Household 1995 Average Gallons Per Household No. No. Total Household Water UseNo. Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Mnths. Days Gals g/m g/d

105.2 2 21692 47124 35904 29920 41140 29172 12 365 204952 17079 562106.2 +107.2 1 13464 150348 80036 49368 62084 62832 12 365 418132 34844 1146

108.2 1 46376 51612 45628 42636 65824 53108 12 365 305184 25432 836

109.2 ?110.2 1 14960 23936 40392 35156 42636 33660 12 365 190740 15895 523

111.2 1 17204 41888 36652 37400 38896 32912 12 365 204952 17079 562

112.2 1 26180 42636 41140 39644 44132 48620 12 365 242352 20196 664

113.2 #114.2 2 38148 65076 85272 44880 81532 99484 12 365 414392 34533 1135115.2 +116.2 1 47124 62832 48620 44880 57596 17952 12 365 279004 23250 764

117.2 1 14960 50864 32164 36652 35904 38896 12 365 209440 17453 574118.2 2 44132 44880 31416 40392 48620 62084 12 365 271524 22627 744

119.2 2 13464 39644 23188 29920 58344 26180 12 365 190740 15895 523

120.2 1 748 1496 7480 748 5984 1496 12 365 17952 1496 49

121.2 +122.2 2 14212 17204 14960 17952 19448 19448 12 365 103224 8602 283

123.2 2 3740 8228 5984 7480 8228 4488 12 365 38148 3179 105

124.2 +125.2 2 37400 51612 34408 28424 66572 38148 12 365 256564 21380 703

126.2 2 18700 64328 56848 44880 105468 50116 12 365 340340 28362 932

127.2 1 2992 5236 5984 6732 8976 8228 12 365 38148 3179 105

128.2 #129.2 2 11220 43384 29920 32912 76296 11968 12 365 205700 17142 564

130.2 1 17204 32912 24684 32912 26928 33660 12 365 168300 14025 461

131.2 2 14960 31416 17952 21692 68816 26928 12 365 181764 15147 498

132.2 2 11220 15708 40504 20944 39644 24684 12 365 152704 12725 418

133.2 1 11220 18700 12716 23936 25432 8976 12 365 100980 8415 277

134.2 #135.2 1 10472 13464 8976 9724 13464 44880 12 365 100980 8415 277

136.2 2 50864 58344 27676 41888 85272 56100 12 365 320144 26679 877

137.2 1 2244 3740 2992 4488 7480 6732 12 365 27676 2306 76

138.2 1 15708 30668 29920 23936 47124 21692 12 365 169048 14087 463

139.2 2 26180 26928 24684 17952 20944 36652 12 365 153340 12778 420

140.2 2 12716 34408 23188 25432 41140 13464 12 365 150348 12529 412

141.2 1 10472 11220 11220 10472 8976 5984 12 365 58344 4862 160

142.2 2 36652 79288 38148 148104 151096 114444 12 365 567732 47311 1555

143.2 2 26180 19448 14960 18700 14960 17204 12 365 111452 9288 305

144.2 +145.2 ?146.2 1 10472 9724 9724 2244 5236 3740 12 365 41140 3428 113

147.2 #148.2 2 107712 141372 29920 37400 41888 25432 12 365 383724 31977 1051

149.2 #150.2 2 60588 57596 45628 54604 112200 53108 12 365 383724 31977 1051

151.2 2 19448 47872 37400 77044 78540 26928 12 365 287232 23936 787

152.2 #153.2 1 8976 21692 11968 11968 14212 10472 12 365 79288 6607 217

154.2 2 24684 35156 11968 21692 18700 17204 12 365 129404 10784 355

155.2 +156.2 1 8976 18700 46376 28424 25432 11968 12 365 139876 11656 383




No. Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Mnths. Days Gals g/m g/d

157.2 2 19448 16456 16456 36652 25432 19448 12 365 133892 11158 367

158.2 2 15708 41140 35156 33660 36652 32912 12 365 195228 16269 535

159.2 2 20944 40392 69564 30668 54604 21692 12 365 237864 19822 652

160.2 +

n 112 15 34 35 55 49 63 49 63 49 63 49 63 34 29 14 8 112 112 112 112 112

Sum 647020 1158652 725560 973896 1146684 1834822 1902164 1847523 1397264 1609591 1810160 2531075 1563320 866184 470492 165308 1344 40880 20649714 1720810 56575

Avg 43135 34078 20730 17707 23402 29124 38820 29326 28516 25549 36942 40176 45980 29868 33607 20664 12 365 184372 15364 505

Min 4488 5236 2244 748 2244 1496 3740 5236 2992 748 2992 2244 7480 1496 4488 3740 12 365 17952 1496 49

Max 105468 154836 64328 58344 150348 77792 141372 93500 112200 84524 148104 105468 151096 112200 114444 53108 12 365 567732 47311 1555

St.Dev 29709 33926 15488 11165 26220 17332 26024 19883 23738 17083 26366 23797 32606 24882 29404 16524 0 0 111068 9256 304

# - Household omitted because no water use was recorded for two or more months.* - Duplicate household.

+ - Household omitted because water account numbers changed sometime during the study period.

? - Household omitted because water use data were not available for various reasons.

a - anomalous water use


APPENDIX C, TABLE C-3A. BI-MONTHLY PRE-EVALUATION WATER USE FOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS WITH IRRIGATION METERS (March 1993-July 1994).

1993 Average Gallons Per HouseholdHouse Meter Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-OctID No. Type Other Irrigation ITotal Other Irrigation Total Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation Total

1 2 14212 53856 68068 18700 70312 89012 20196 58344 78540 15708 51612 673202 2 7480 7480 14960 11220 39644 50864 4488 112948 117436 8228 25432 336606 2 5984 42636 48620 11220 76296 87516 8228 65824 74052 7480 36652 44132

10 2 5984 11968 17952 11968 29172 41140 12716 14960 2767612 2 7854 45852 53706 5236 23936 29172 6732 33660 40392 7480 27676 3515614 2 8976 23936 32912 6732 60588 67320 7480 61336 6881616 2 10472 25432 35904 11968 49368 61336 11968 27676 3964417 2 6732 0 6732 11220 24684 35904 10472 53856 64328 11968 15708 2767618 2 15708 14212 29920 17204 1496 18700 19448 21692 41140 15708 10472 2618022 2 6732 23936 30668 7480 74800 82280 10472 68068 7854024 2 4488 6732 11220 11220 31416 42636 10472 38896 4936825 2 14212 24684 38896 7480 37400 44880 12716 26928 3964426 2 13464 19448 32912 20944 41140 62084 17204 43384 60588 14212 28424 4263627 2 14212 36704 50916 27676 59840 87516 26180 62832 89012 20944 51612 7255628 2 6732 7480 14212 11968 35156 47124 13464 41888 55352 8976 14212 2318829 2 9724 63580 73304 10472 74052 84524 11968 42636 54604 14960 43384 5834432 2 32164 96492 128656 23188 62084 85272 17952 177276 195228 22440 70312 9275235 2 2992 22440 25432 6732 46376 53108 7480 26928 3440840 2 8976 32912 41888 8976 80784 89760 7480 68068 75548 7480 30668 3814841 2 38896 23188 62084 39644 44880 84524 22440 5984 28424 12716 6732 1944842 2 20944 18700 39644 16456 26928 43384 8976 17952 2692843 2 2244 22440 24684 3740 23936 27676 3740 16456 2019647 2 1496 51612 53108 5984 56848 62832 5236 56848 6208449 2 18700 27676 46376 8976 28424 37400 19448 32164 5161252 2 5984 38896 44880 13464 71060 84524 31416 95744 12716055 2 21692 26180 47872 17952 17952 35904 17952 20196 3814856 2 4488 25432 29920 5984 32164 38148 6732 28424 3515659 2 14212 136884 151096 10472 77792 88264 9724 61336 7106064 2 11968 22440 34408 7480 52360 59840 9724 50116 5984065 2 19448 35156 54604 25432 12716 38148 29172 13464 4263668 2 7480 36652 44132 5984 25432 31416 6732 12716 1944869 2 20196 72556 92752 23188 73304 96492 18700 48620 6732070 2 18700 0 18700 23188 70312 93500 17204 39644 5684871 2 29920 0 29920 31416 0 31416 23936 8228 3216474 2 11220 84524 95744 12716 61336 74052 11968 35156 4712475 2 6732 19448 26180 5236 20944 26180 4488 16456 2094476 2 11220 53856 65076 13464 56848 70312 11968 49368 6133677 2 2992 26928 29920 10472 26928 37400 12716 21692 3440878 2 15708 68068 83776 12716 77044 89760 11968 22440 3440881 2 20944 33660 54604 22440 35156 57596 19448 42636 6208485 2 14212 80784 94996 15708 59092 74800 14212 53108 6732088 2 7480 22440 29920 15708 38896 54604 17204 748 1795290 2 9724 130152 139876 13464 104720 11818491 2 8976 112948 121924 10472 111452 12192492 2 13464 29920 43384 11220 60588 71808 13464 14212 2767699 2 5236 18700 23936 9724 17952 27676

100 3 24684 12716 37400 2094 11220 32164 19448 5236 24684102 2 17952 21692 39644 19448 44132 63580 16456 23188 39644

, TABLEC3A.XLSPage 1 of 6


1993 Average Gallons Per HouseholdHouse Meter Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-OctID No. Type Other Irrigation JTotal Other Irrigation JTotal Other Irrigation Total Other Irrigation |Total Other Irrigation Total Other Irrigation ITotal Other Irigation ITotal

103 2 14212 40392 54604 17952 31416 49368 9724 11968 21692

104 2 13464 127908 141372 15708 102476 118184 9724 73304 83028

105 2 13464 51612 65076 12716 53856 66572 10472 42636 53108

106 2 11220 70312 81532 8228 96492 104720 9724 41140 50864

110 2 10472 748 11220 8228 3740 11968

111 2 13464 34408 47872 13464 46376 59840

112 2 10472 42636 53108 8976 9724 18700

113 2 18700 17204 35904 11220 7480 18700

116 2 7480 28424 35904 11220 12716 23936

120 2 5236 14212 19448 3740 6732 10472

122 2 12716 7480 20196 11968 6732 18700

125 2 6732 69564 76296 7480 47124 54604

126 2 19448 102476 121924 29172 59840 89012

131 2 6732 32912 39644 4488 14960 19448

132 2 24684 33660 58344 23188 34408 57596

142 2 13464 102476 115940

143 2 10472 24684 35156 10472 15708 26180

147 2 9724 40392 50116

148 2 15708 18700 34408

149 2 8228 33660 41888

151 2 62832 49368 112200

152 3 8228 11220 19448

157 2 20944 111452 132396 5236 48620 53856

158 2 8228 4488 12716

n 72 13 13 13 18 18 18 31 31 31 21 21 21 44 44 44 28 28 28 44 44 44

Sum 182138 443841 625979 186252 596156 782408 481712 1436160 1917872 238612 1101056 1339668 598250 2143768 2760868 385220 1192312 1577532 566984 1249160 1816144

Avg 14011 34142 48152 10347 33120 43467 15539 46328 61867 11362 52431 63794 13597 48722 62747 13758 42583 56340 12886 28390 41276

Min 5984 0 6732 1496 0 11220 2992 0 18700 3740 17952 23936 2094 0 11220 3740 748 12716 3740 3740 10472

Max 38896 96492 128656 21692 136884 151096 39644 127908 141372 23188 130152 139876 31416 177276 195228 62832 111452 127160 29172 73304 92752

St.Dev 10193 26896 32037 6842 31259 32715 7744 27926 28180 5525 29648 29885 6814 35525 35859 11056 30831 34434 6183 18813 20995



1994 Average Gallons Per Household

House Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-MayID No. Other Irrigation ITotal Other Irrigation JTotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation Total Other Irrigation |Total Other Irrigation Total

1 21692 53856 75548 26928 50116 770442 11968 23936 35904 6732 25432 321646 10472 48620 59092 9724 28424 3814810 10472 0 10472 12716 9724 22440 9724 4488 14212

12 6732 31416 38148 10472 30668 41140

14 8228 11220 19448 16456 20196 36652 8976 25432 34408

16 11968 3740 15708 13464 8228 21692 14212 8228 22440

17 12716 20196 32912 14212 7480 2169218 16456 8228 24684 17952 24684 4263622 10472 75548 86020 15708 103224 118932 11220 61336 72556

24 9724 26180 35904 26180 47872 74052 8228 50116 58344

25 5984 20944 26928 14212 23188 37400 13464 23936 37400

26 15708 41888 57596 16456 14960 31416

27 16456 32912 49368 17204 23936 41140

28 8228 29920 38148 8976 4488 13464

29 15708 36652 52360 17204 23188 40392

32 20944 98736 119680 20944 79288 10023235 12716 8228 20944 10472 29172 39644 3740 26928 30668

40 8976 56848 65824 9724 20944 3066841 18700 26928 45628 14960 33660 4862042 12716 14212 26928 14212 18700 32912 20196 54604 74800

43 3740 12716 16456 4488 24684 29172 4488 20944 25432

47 5236 40392 45628 6732 50864 57596 6732 36652 43384

49 20196 34408 54604 20196 50864 71060 16456 47124 63580

52 17952 29920 47872 20944 65076 86020 14960 16456 3141655 17952 29920 47872 22440 35156 57596 17952 26928 44880

56 4488 20944 25432 8228 20944 29172 5984 17952 23936

59 11220 41888 53108 14212 80036 94248 11968 39644 5161264 8228 53108 61336 9724 17952 27676 10472 26180 3665265 20196 17204 37400 11968 21692 33660 11968 30668 4263668 7480 8976 16456 9724 2992 12716 8228 23188 3141669 28424 64328 92752 25432 30668 56100 22440 78540 10098070 13464 0 13464 18700 33660 52360 14960 62084 77044

71 26180 20196 46376 26180 54604 80784 36652 4488 41140

74 6732 34408 41140 17204 8228 25432 8976 31416 4039275 2244 29172 31416 6732 6732 13464 5236 8976 1421276 24684 45628 70312 17952 35156 53108 12716 44880 57596

77 14212 19448 33660 14212 26928 41140 11220 17952 2917278 12716 65824 78540 23936 48620 72556 19448 44880 6432881 12716 32164 44880 22440 48620 71060 15708 26180 41888

85 14212 20944 35156 20944 22440 43384 14960 66572 81532

88 10472 748 11220 14960 748 15708 9724 0 9724

90 12716 62084 74800 1361 106964 108325 14960 86768 101728 15708 92004 107712

91 7480 14212 21692 13464 59092 72556 7480 7480 14960 8228 26928 35156

99 3740 0 3740 6732 748 7480 3740 2244 5984 6732 18700 25432

100 22440 8976 31416 40392 0 40392 14212 11220 25432

102 21692 30668 52360 20944 20944 41888 16456 29920 46376



1994 Average Gallons Per HouseholdHouse Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-MayID No. Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation Total Other Irrigation ITotal Other Irrigation Total Other Irrigation Total

103 8228 8976 17204 8228 3740 11968 8976 5984 14960

104 14960 113696 128656 53856 47124 100980 14212 88264 102476

105 11968 20196 32164 11968 17952 29920 11220 24684 35904

106 11220 65824 77044 11968 59840 71808 11220 39644 50864

110 8976 0 8976 7480 748 8228 7480 10472 17952111 10472 38148 48620 11220 21692 32912 12716 48620 61336112 11220 7480 18700 10472 5236 15708 14960 7480 22440

113 15708 11220 26928 15708 0 15708 16456 23936 40392

116 8976 7480 16456 10472 6732 17204 13464 19448 32912120 5984 8228 14212 5236 2244 7480 3740 11968 15708122 11968 5984 17952 13464 5236 18700 11968 8228 20196125 7480 20944 28424 5984 5984 11968 6732 23936 30668126 11220 71060 82280 16456 50116 66572 11968 64328 76296131 5984 4488 10472 5984 12716 18700 5984 21692 27676132 20196 38148 58344 14212 42636 56848 14960 44132 59092142 10472 34408 44880 21692 43384 65076 14212 32912 47124 12716 35904 48620

143 12716 17952 30668 8228 20944 29172 8228 19448 27676147 8228 2992 11220 9724 39644 49368 8228 30668 38896 8976 37400 46376

148 11220 8228 19448 19448 27676 47124 12716 21692 34408 10472 24684 35156149 2244 11220 13464 7480 30668 38148 6732 26928 33660 5236 27676 32912151 68816 8228 77044 38896 68816 107712 27676 0 27676 26928 69564 96492

152 5984 0 5984 11220 5236 16456 12716 0 12716 14212 8228 22440

157 8228 97240 105468 6732 17952 24684 4488 53856 58344

158 28424 748 29172 33660 0 33660 5236 2244 7480 12716 4488 17204

n 28 28 28 44 44 44 28 28 28 44 44 44 28 28 28 31 31 31 10 10 10

Sum 353056 531828 884884 596156 1498244 2094400 441185 1024760 1465945 659736 1034484 1694220 320892 779416 1100308 383724 948464 1332188 121924 345576 467500

Avg 12609 18994 31603 13549 34051 47600 15757 36599 52355 14994 23511 38505 11460 27836 39297 12378 30596 42974 12192 34558 46750

Min 2244 0 3740 2244 0 8976 1361 0 7480 5236 0 7480 3740 0 5984 3740 4488 14212 5236 4488 17204

Max 68816 75548 86020 28424 113696 128656 38896 106964 118932 53856 79288 100980 27676 86768 101728 36652 88264 102476 26928 92004 107712

St.Dev 12230 19150 21866 6105 26623 28363 8390 28623 29936 9267 18734 24049 5448 22811 24416 6234 20963 22656 6159 27054 30863



Pre-Evaluation Average Household Water Use

House May-Jun Jun-Jul Total Total Other Irrigation Total

ID No. Other Irrigation ITotal Other Irrigation Total #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d

1 12 365 117436 9786 322 338096 28175 926 455532 37961 1248

2 12 365 50116 4176 137 234872 19573 643 284988 23749 781

6 12 365 53108 4426 146 298452 24871 818 351560 29297 963

10 12 365 63580 5298 174 70312 5859 193 133892 11158 367

12 12 365 44506 3709 122 193208 16101 529 237714 19810 651

14 12 365 56848 4737 156 202708 16892 555 259556 21630 711

16 12 365 74052 6171 203 122672 10223 336 196724 16394 539

17 12 365 67320 5610 184 121924 10160 334 189244 15770 518

18 12 365 102476 8540 281 80784 6732 221 183260 15272 502

22 12 365 62084 5174 170 406912 33909 1115 468996 39083 1285

24 12 365 70312 5859 193 201212 16768 551 271524 22627 744

25 12 365 68068 5672 186 157080 13090 430 225148 18762 617

26 12 365 97988 8166 268 189244 15770 518 287232 23936 787

27 12 365 122672 10223 336 267836 22320 734 390508 32542 1070

28 12 365 58344 4862 160 133144 11095 365 191488 15957 525

29 12 365 80036 6670 219 283492 23624 777 363528 30294 996

32 12 365 137632 11469 377 584188 48682 1601 721820 60152 1978

35 12 365 44132 3678 121 160072 13339 439 204204 17017 559

40 12 365 51612 4301 141 290224 24185 795 341836 28486 937

41 12 365 147356 12280 404 141372 11781 387 288728 24061 791

42 12 365 93500 7792 256 151096 12591 414 244596 20383 670

43 12 365 22440 1870 61 121176 10098 332 143616 11968 393

47 12 365 31416 2618 86 293216 24435 803 324632 27053 889

49 12 365 103972 8664 285 220660 18388 605 324632 27053 889

52 12 365 104720 8727 287 317152 26429 869 421872 35156 1156

55 12 365 115940 9662 318 156332 13028 428 272272 22689 746

56 12 365 35904 2992 98 145860 12155 400 181764 15147 498

59 12 365 71808 5984 197 437580 36465 1199 509388 42449 1396

64 12 365 57596 4800 158 222156 18513 609 279752 23313 766

65 12 365 118184 9849 324 130900 10908 359 249084 20757 682

68 12 365 45628 3802 125 109956 9163 301 155584 12965 426

69 12 365 138380 11532 379 368016 30668 1008 506396 42200 1387

70 12 365 106216 8851 291 205700 17142 564 311916 25993 855

71 12 365 174284 14524 477 87516 7293 240 261800 21817 717

74 12 365 68816 5735 189 255068 21256 699 323884 26990 887

75 12 365 30668 2556 84 101728 8477 279 132396 11033 363

76 12 365 92004 7667 252 285736 23811 783 377740 31478 1035

77 12 365 65824 5485 180 139876 11656 383 205700 17142 564

78 12 365 96492 8041 264 326876 27240 896 423368 35281 1160

81 12 365 113696 9475 311 218416 18201 598 332112 27676 910

85 12 365 94248 7854 258 302940 25245 830 397188 33099 1088

88 12 365 75548 6296 207 63580 5298 174 139128 11594 381

90 12 365 67933 5661 186 582692 48558 1596 650625 54219 1783

91 12 365 56100 4675 154 332112 27676 910 388212 32351 1064

92 12 365 65076 5423 178 177276 14773 486 242352 20196 664

99 12 365 35904 2992 98 58344 4862 160 94248 7854 258

100 12 365 123270 10273 338 49368 4114 135 191488 15957 525

102 12 365 112948 9412 309 170544 14212 467 283492 23624 777



Pre-Evaluation Average Household Water UseHouse May-Jun Jun-Jul Total Total Other Irrigation TotalID No. Other Irrigation ITotal Other Irrigation ITotal #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d

103 12 365 67320 5610 184 102476 8540 281 169796 14150 465104 12 365 121924 10160 334 552772 46064 1514 674696 56225 1848

105 12 365 71808 5984 197 210936 17578 578 282744 23562 775

106 12 365 63580 5298 174 373252 31104 1023 436832 36403 1197

110 11220 18700 29920 12 365 53856 4488 148 34408 2867 94 88264 7355 242

111 17204 34408 51612 12 365 78540 6545 215 223652 18638 613 302192 25183 828

112 11220 20196 31416 12 365 67320 5610 184 92752 7729 254 160072 13339 439

113 14960 22440 37400 12 365 92752 7729 254 82280 6857 225 175032 14586 480

116 11968 17204 29172 12 365 63580 5298 174 92004 7667 252 155584 12965 426

120 5236 14212 19448 12 365 29172 2431 80 57596 4800 158 86768 7231 238

122 15708 28424 44132 12 365 77792 6483 213 62084 5174 170 139876 11656 383

125 8228 40392 48620 12 365 42636 3553 117 207944 17329 570 250580 20882 687

126 12716 88264 100980 12 365 100980 8415 277 436084 36340 1195 537064 44755 1471131 8228 35904 44132 12 365 37400 3117 102 122672 10223 336 160072 13339 439

132 19448 35156 54604 12 365 116688 9724 320 228140 19012 625 344828 28736 945

142 20944 52360 73304 12 365 93500 7792 256 301444 25120 826 394944 32912 1082

143 8976 23188 32164 12 365 59092 4924 162 121924 10160 334 181016 15085 496

147 11220 46376 57596 12 365 56100 4675 154 197472 16456 541 253572 21131 695

148 16456 26180 42636 12 365 86020 7168 236 127160 10597 348 213180 17765 584

149 6732 0 6732 12 365 36652 3054 100 130152 10846 357 166804 13900 457

151 30668 44132 74800 12 365 255816 21318 701 240108 20009 658 495924 41327 1359

152 12716 26180 38896 12 365 65076 5423 178 50864 4239 139 115940 9662 318157 5984 62832 68816 12 365 51612 4301 141 391952 32663 1074 443564 36964 1215158 7480 14212 21692 12 365 95744 7979 262 26180 2182 72 121924 10160 334

n 13 13 13 7 7 7 7272 2 72 72 72 72 72 72 72 72 72

Sum 151096 441320 592416 106216 209440 315656 864 26280 5773153 481096 15817 14975985 1247999 41030 20767988 1730666 56899

Avg 11623 33948 45570 15174 29920 45094 12 365 80183 6682 220 208000 17333 570 288444 24037 790

Min 5236 14212 19448 6732 0 6732 12 365 22440 1870 61 26180 2182 72 86768 7231 238Max 19448 88264 100980 30668 52360 74800 12 365 255816 21318 701 584188 48682 1601 721820 60152 1978St.Dev 4325 20820 21184 8437 18913 25490 0 0 37933 3161 104 127982 10665 351 140065 11672 384


APPENDIX C, TABLE C-3B. BI-MONTHLY PRE-EVALUATION WATER USE FOR DAVIS ISLANDS CONTROL HOUSEHOLDS WITH IRRIGATION METERS (March 1993 - July 1994).

1993 Average Gallons Per HouseholdHouse Meter Mar-Apr Apr-May ay-Jun Jun-Jul Jul-Aug Aug-Sep Sep-OctID No. Type Other Irrigation Total Other Irrigation ITotal Other Irrigation Total Other Ilrrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation Total22 2 14960 13988 28948 16456 46376 62832 6732 39644 46376 12716 21692 344085.2 2 2244 22440 24684 13464 60588 74052 15708 49368 650769.2 2 5236 11220 16456 8976 18700 27676 11220 29920 4114013.2 2 6732 21692 28424 11220 33660 44880 10472 39644 5011614.2 3 9724 4488 14212 5984 25432 31416 3740 26928 3066815.2 2 2992 23936 26928 4488 62832 67320 4488 40392 4488027.2 2 8228 4862 13090 10472 15708 26180 10472 31416 41888 8228 5984 1421228.2 2 9724 748 10472 12716 12716 25432 11968 18700 30668 11220 3740 1496029.2 2 8976 51612 60588 12716 31416 44132 26180 0 26180 14960 2244 1720432.2 2 11968 19448 31416 16456 41888 58344 15708 35156 50864 14212 49368 6358035.2 2 2992 10472 13464 4488 21692 26180 2992 2992 598440.2 2 5236 35904 41140 5984 60588 66572 8228 62832 71060 5236 31416 3665241.2 2 8228 60588 68816 13464 67320 80784 13464 59092 72556 10472 62832 7330442.2 2 5984 24684 30668 14960 47872 62832 14960 50864 6582444.2 2 14212 8228 22440 17204 18700 35904 17204 17204 34408 14960 2992 1795245.2 2 8976 5984 14960 10472 40392 50864 4488 41140 45628 6732 35904 4263648.2 2 11968 16456 28424 11220 73304 84524 13464 49368 6283252.2 2 4488 9724 14212 41140 23936 65076 14960 41140 5610055.2 2 2992 11968 14960 4488 24684 29172 5236 5236 1047257.2 2 20196 44880 65076 28424 26180 54604 15708 2244 1795258.2 2 17952 0 17952 6732 5236 11968 10472 9724 2019659.2 2 8228 29920 38148 9724 55352 65076 9724 40392 5011661.2 2 7480 14212 21692 11220 14960 26180 5236 8976 14212

62.2 2 29172 24684 53856 31416 20944 52360 20944 23936 4488063.2 2 51612 58344 109956 18700 35904 54604 23936 23936 4787264.2 2 24684 13464 38148 28424 0 28424 37400 40392 77792

68.2 2 3740 35904 39644 1496 44132 45628 748 748 149669.2 2 17204 102476 119680 14212 86020 100232 12716 80036 9275270.2 2 7480 80036 87516 23188 77044 100232 20944 181016 20196071.2 2 34408 11968 46376 41140 13464 54604 34408 6732 41140

72.2 2 20196 49368 69564 21692 23936 45628 17204 34408 5161279.2 2 17204 23936 41140 14212 29172 43384 15708 20196 3590480.2 2 50864 32912 83776 47124 20944 68068 42636 16456 5909282.2 2 7480 10472 17952 16456 62832 79288 7480 35156 4263686.2 2 20944 53108 74052 21692 45628 67320 17204 31416 4862088.2 2 26928 65824 92752 29172 69564 98736 20196 44880 6507695.2 2 8228 74052 82280 8976 64328 7330496.2 2 16456 57596 74052 17952 51612 69564100.2 2 10472 17204 27676 10472 20944 31416 6732 9724 16456101.2 2 11220 42636 53856 14960 41140 56100102.2 2 26180 68816 94996 15708 34408 50116 17204 16456 33660

105.2 2 15708 37400 53108 1496 7480 8976 11220 0 11220114.2 2 29172 66572 95744 23188 44132 67320118.2 2 29172 33660 62832 17952 50116 68068119.2 2 14960 60588 75548 11220 8228 19448122.2 2 14960 2992 17952 14960 1496 16456123.2 2 3740 9724 13464 3740 3740 7480125.2 2 26928 43384 70312 29172 21692 50864



1993 Average Gallons Per HouseholdHouse Meter Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-OctID No. Type Other lrrgation Total Other Irrigation ITotal Other Irrigation Total Other |Irrigation |Total Other lrrigation ITotal Other - rrigation |Total Other Irrigation |Total126.2 2 31416 100232 131648 28424 44132 72556129.2 2 3740 41140 44880 6732 17204 23936131.2 2 22440 23188 45628 18700 9724 28424132.2 2 19448 88264 107712 5984 35156 41140136.2 2 35156 110704 145860 35904 75548 111452139.2 2 22440 11968 34408 12716 11968 24684140.2 2 7480 49368 56848142.2 2 28424 142868 171292143.2 2 4488 13464 17952 2992 12716 15708148.2 2 59840 53856 113696150.2 2 23188 58344 81532 20196 44132 64328151.2 2 3740 1496 5236154.2 2 13464 122672 136136 17952 0 17952157.2 2 21692 22440 44132 14960 8976 23936158.2 2 11220 50116 61336159.2 2 10472 37400 47872n 64 9 9 9 16 16 16 23 23 23 23 23 23 35 35 35 29 29 29 35 35 35Sum 90508 201362 291870 140624 367268 507892 448800 899844 1348644 327624 1061412 1389036 652256 1314236 1966492 409156 1306008 1715164 562496 753984 1316480Avg 10056 22374 32430 8789 22954 31743 19513 39124 58637 14245 46148 60393 18636 37550 56185 14109 45035 59144 16071 21542 37614Min 5236 748 10472 2244 0 13464 3740 11968 21692 3740 5236 11968 1496 0 8976 2992 1496 5236 748 0 1496Max 14960 60588 68816 26928 80036 92752 51612 102476 119680 41140 110704 145860 47124 122672 136136 59840 181016 201960 42636 80036 92752St.Dev 3109 21852 20818 6760 21302 24362 12427 22759 26573 10531 25711 31387 10490 29109 30261 11579 37813 44401 9566 19684 22970



1994 Average Gallons Per HouseholdHouse Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-MayID No. Other Irrigation Total Other Irnigation Total Other Irrigation Total Other Irrigation Total Other Irigation ITotal Other lrrigation Total Other Irrigation ITotal2.2 17204 43384 60588 12716 25432 381485.2 11220 19448 30668 23188 12716 35904 11220 5984 172049.2 5236 32912 38148 20196 59840 80036 11968 32912 4488013.2 9724 49368 59092 14212 23188 37400 11968 16456 2842414.2 3740 10472 14212 4488 6732 11220 8228 748 897615.2 3740 4488 8228 4488 10472 14960 3740 10472 1421227.2 8228 11968 20196 9724 5236 1496028.2 12716 1496 14212 12716 748 1346429.2 14960 2244 17204 13464 20944 3440832.2 15708 28424 44132 19448 32164 5161235.2 5236 2244 7480 3740 50864 54604 12716 4488 1720440.2 6732 29920 36652 6732 27676 3440841.2 18700 65076 83776 20944 43384 6432842.2 14212 37400 51612 24684 40392 65076 14960 48620 6358044.2 18700 8976 27676 17204 4488 2169245.2 7480 35904 43384 10472 36652 4712448.2 11968 36652 48620 16456 73304. 89760 8228 32912 4114052.2 11968 49368 61336 17952 50864 68816 12716 79288 9200455.2 3740 1496 5236 5984 10472 16456 4488 6732 1122057.2 14212 0 14212 14212 15708 29920 13464 0 1346458.2 4488 8976 13464 5236 9724 14960 5236 8976 1421259.2 5236 40392 45628 4488 7480 11968 27676 34408 6208461.2 5236 8976 14212 8228 5236 13464 6732 11968 1870062.2 27676 40392 68068 25432 39644 65076 23188 34408 5759663.2 27676 35904 63580 21692 8976 30668 28424 29920 5834464.2 37400 46376 83776 29920 79288 109208 69564 70312 13987668.2 6732 4488 11220 11220 9724 20944 14212 27676 4188869.2 3740 9724 13464 9724 18700 28424 13464 21692 3515670.2 14960 44880 59840 17952 59840 77792 15708 13464 2917271.2 26928 0 26928 27676 0 27676 28424 748 2917272.2 17204 31416 48620 19448 40392 59840 18700 38896 5759679.2 11968 6732 18700 14212 9724 23936 11220 11968 2318880.2 58344 10472 68816 67320 9724 77044 46376 15708 6208482.2 7480 11968 19448 8976 16456 25432 7480 4488 1196886.2 17204 55352 72556 15708 59840 75548 14960 51612 6657288.2 21692 13464 35156 21692 65824 87516 21692 54604 7629695.2 8228 41140 49368 10472 61336 71808 8228 26180 34408 8976 86020 9499696.2 21692 7480 29172 22440 14960 37400 18700 15708 34408 18700 47872 66572100.2 8228 8228 16456 8228 4488 12716 8228 11220 19448101.2 11968 36652 48620 17204 19448 36652 14212 10472 24684 11968 23188 35156102.2 17204 29172 46376 16456 6732 23188 17204 49368 66572105.2 14212 24684 38896 14960 29172 44132 15708 19448 35156114.2 26928 48620 75548 25432 29172 54604 30668 29920 60588118.2 14960 47124 62084 22440 42636 65076 17952 23936 41888 25432 26180 51612119.2 14212 10472 24684 17204 748 17952 13464 22440 35904122.2 14212 1496 15708 12716 748 13464 15708 748 16456123.2 3740 0 3740 4488 1496 5984 3740 2244 5984 3740 8976 12716125.2 35904 12716 48620 33660 8976 42636 29920 22440 52360

TABLEC3B.XLS

Page 3 of 6


1994 Average Gallons Per HouseholdHouse Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-MayID No. Other Irrigationotal Other igation otal Other Irigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total126.2 28424 71808 100232 23936 32164 56100 29920 47872 77792129.2 5236 17204 22440 8976 20196 29172 5984 16456 22440 6732 16456 23188131.2 17204 16456 33660 18700 8228 26928 14960 14212 29172132.2 11968 17952 29920 8976 18700 27676 20944 12716 33660136.2 26928 38148 65076 34408 65076 99484 31416 63580 94996 20944 35156 56100

139.2 17952 10472 28424 14212 3740 17952 20196 10472 30668140.2 5236 25432 30668 6732 23188 29920 7480 18700 26180 8228 38896 47124142.2 9724 86020 95744 19448 106216 125664 24684 72556 97240 18700 105468 124168143.2 3740 13464 17204 3740 11968 15708 4488 13464 17952148.2 38896 29172 68068 29920 80784 110704 38148 48620 86768 29920 35156 65076150.2 11968 41140 53108 22440 38148 60588 19448 35904 55352151.2 1496 1496 2992 3740 1496 5236 8228 1496 9724 9724 29172 38896154.2 16456 54604 71060 17952 147356 165308 14212 25432 39644157.2 15708 5984 21692 15708 2992 18700 14212 32912 47124158.2 11220 20196 31416 12716 25432 38148 10472 25432 35904 12716 22440 35156159.2 8976 20944 29920 10472 11220 21692 8976 10472 19448 12716 29172 41888

n 29 29 29 35 35 35 29 29 29 35 35 35 29 29 29 26 26 26 13 13 13

Sum 314908 741268 1056176 617100 837760 1454860 411400 981376 1392776 628320 827288 1455608 387464 702372 1089836 546788 651508 1198296 188496 504152 692648

Avg 10859 25561 36420 17631 23936 41567 14186 33841 48027 17952 23637 41589 13361 24220 37581 21030 25058 46088 14500 38781 53281

Min 1496 0 2992 3740 0 11220 3740 1496 5236 3740 0 12716 3740 748 5984 4488 0 13464 3740 8976 12716

Max 38896 86020 95744 58344 71808 100232 34408 106216 125664 67320 147356 165308 38148 79288 97240 69564 70312 139876 29920 105468 124168St.Dev 8112 19976 23348 10961 20023 24814 8511 27961 33776 10987 28287 31203 8455 21997 28159 13371 17101 26236 7723 27429 29825



Pre-Evaluation Average Household Water UseHouse May-Jun Jun-Jul Total Total Other Irrigation TotalID No. Other Irrigation ITotal Other Irrigation Total #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d2.2 12 365 80784 6732 221 190516 15876 522 271300 22608 7435.2 12 365 77044 6420 211 170544 14212 467 247588 20632 6789.2 12 365 62832 5236 172 185504 15459 508 248336 20695 680

13.2 12 365 64328 5361 176 184008 15334 504 248336 20695 68014.2 12 365 35904 2992 98 74800 6233 205 110704 9225 30315.2 12 365 23936 1995 66 152592 12716 418 176528 14711 48427.2 12 365 55352 4613 152 75174 6265 206 130526 10877 35828.2 12 365 71060 5922 195 38148 3179 105 109208 9101 29929.2 12 365 91256 7605 250 108460 9038 297 199716 16643 54732.2 12 365 93500 7792 256 206448 17204 566 299948 24996 82235.2 12 365 32164 2680 88 92752 7729 254 124916 10410 34240.2 12 365 38148 3179 105 248336 20695 680 286484 23874 78541.2 12 365 85272 7106 234 358292 29858 982 443564 36964 121542.2 12 365 89760 7480 246 249832 20819 684 339592 28299 93044.2 12 365 99484 8290 273 60588 5049 166 160072 13339 43945.2 12 365 48620 4052 133 195976 16331 537 244596 20383 67048.2 12 365 73304 6109 201 281996 23500 773 355300 29608 97352.2 12 365 103224 8602 283 254320 21193 697 357544 29795 980

55.2 12 365 26928 2244 74 60588 5049 166 87516 7293 24057.2 12 365 106216 8851 291 89012 7418 244 195228 16269 53558.2 12 365 50116 4176 137 42636 3553 117 92752 7729 25459.2 12 365 65076 5423 178 207944 17329 570 273020 22752 74861.2 12 365 44132 3678 121 64328 5361 176 108460 9038 29762,2 12 365 157828 13152 432 184008 15334 504 341836 28486 93763.2 12 365 172040 14337 471 192984 16082 529 365024 30419 100064.2 12 365 227392 18949 623 249832 20819 684 477224 39769 130768.2 12 365 38148 3179 105 122672 10223 336 160820 13402 44169.2 12 365 71060 5922 195 318648 26554 873 389708 32476 106870.2 12 365 100232 8353 275 456280 38023 1250 556512 46376 152571.2 12 365 192984 16082 529 32912 2743 90 225896 18825 61972.2 12 365 114444 9537 314 218416 18201 598 332860 27738 91279.2 12 365 84524 7044 232 101728 8477 279 186252 15521 51080.2 12 365 312664 26055 857 106216 8851 291 418880 34907 114882.2 12 365 55352 4613 152 141372 11781 387 196724 16394 53986.2 12 365 107712 8976 295 296956 24746 814 404668 33722 110988.2 12 365 141372 11781 387 314160 26180 861 455532 37961 124895.2 12 365 53108 4426 146 353056 29421 967 406164 33847 111396.2 12 365 115940 9662 318 195228 16269 535 311168 25931 853100.2 12 365 52360 4363 143 71808 5984 197 124168 10347 340101.2 12 365 81532 6794 223 173536 14461 475 255068 21256 699102.2 12 365 109956 9163 301 204952 17079 562 314908 26242 863105.2 12 365 73304 6109 201 118184 9849 324 191488 15957 525

114.2 40392 55352 95744 12 365 175780 14648 482 273768 22814 750 449548 37462 1232

118.2 12 365 127908 10659 350 223652 18638 613 351560 29297 963

119.2 12716 28424 41140 12 365 83776 6981 230 130900 10908 359 214676 17890 588122.2 15708 2244 17952 12 365 88264 7355 242 9724 810 27 97988 8166 268123.2 12 365 23188 1932 64 26180 2182 72 49368 4114 135125.2 35156 47872 83028 12 365 190740 15895 523 157080 13090 430 347820 28985 953



Pre-Evaluation Average Household Water UseHouse May-Jun Jun-Jul Total Total Other Irrigation TotalID No. Other Irrigation Total Other Irrigation Total #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d126.2 28424 69564 97988 12 365 170544 14212 467 365772 30481 1002 536316 44693 1469129.2 12 365 37400 3117 102 128656 10721 352 166056 13838 455131.2 18700 29920 48620 12 365 110704 9225 303 101728 8477 279 212432 17703 582132.2 8976 14212 23188 12 365 76296 6358 209 187000 15583 512 263296 21941 721136.2 12 365 184756 15396 506 388212 32351 1064 572968 47747 1570139.2 20196 14212 34408 12 365 107712 8976 295 62832 5236 172 170544 14212 467140.2 8976 39644 48620 12 365 44132 3678 121 195228 16269 535 239360 19947 656142.2 38148 95744 133892 12 365 139128 11594 381 608872 50739 1668 748000 62333 2049143.2 3740 4488 8228 12 365 23188 1932 64 69564 5797 191 92752 7729 254148.2 36652 86020 122672 12 365 233376 19448 639 333608 27801 914 566984 47249 1553150.2 14212 46376 60588 12 365 111452 9288 305 264044 22004 723 375496 31291 1029151.2 12716 33660 46376 12 365 39644 3304 109 68816 5735 189 108460 9038 297154.2 17952 10472 28424 12 365 97988 8166 268 360536 30045 988 458524 38210 1256157.2 14212 26180 40392 12 365 96492 8041 264 99484 8290 273 195976 16331 537158.2 12716 26928 39644 12 365 71060 5922 195 170544 14212 467 241604 20134 662159.2 15708 29920 45628 12 365 67320 5610 184 139128 11594 381 206448 17204 566n 12 12 12 6 6 6 64 64 64 64 64 64 64 64 64 64 64Sum 230384 349316 579700 124916 311916 436832 768 23360 6081240 506770 16661 11811070 984256 32359 17892310 1491026 49020Avg 19199 29110 48308 20819 51986 72805 12 365 95019 7918 260 184548 15379 506 279567 23297 766Min 3740 2244 8228 8976 26928 39644 12 365 23188 1932 64 9724 810 27 49368 4114 135Max 40392 69564 97988 38148 95744 133892 12 365 312664 26055 857 608872 50739 1668 748000 62333 2049St.Dev 10614 21541 30055 13028 30581 43220 0 0 56963 4747 156 115995 9666 318 144462 12038 396


APPENDIX C, TABLE C-4A. BI-MONTHLY POST-EVALUATION WATER USE FOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS WITH IRRIGATION METERS (June 1994 - October 1995).

1994 Average Gallons Per HouseholdHouse Meter Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-JanID No. Type Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation ITotal Other Irrigation Total Other Irrigation Total Other Irrigation Total

1 2 13464 26180 39644 13464 18700 32164 15708 29920 456282 2 6732 11220 17952 5984 10472 16456 8228 35156 433846 2 6732 37400 44132 8976 13464 22440 10472 34408 44880

10 2 12716 24684 37400 11968 2992 14960 8228 2992 11220 5984 19448 2543212 2 7480 15708 23188 7480 15708 23188 8228 20944 2917214 2 6732 17952 24684 11220 2992 14212 9724 3740 13464 8976 22440 3141616 2 16456 22440 38896 19448 7480 26928 11220 3740 14960 13464 10472 2393617 2 8976 6732 15708 8976 748 9724 11220 8976 2019618 2 18700 9724 28424 17204 2992 20196 16456 6732 2318822 2 8976 50864 59840 8976 40392 49368 12716 20196 32912 11968 45628 5759624 2 11968 40392 52360 9724 2992 12716 9724 3740 13464 11968 41888 5385625 2 10472 30668 41140 11220 15708 26928 10472 8976 19448 14212 17204 3141626 2 14212 26180 40392 14212 4488 18700 17204 32164 4936827 2 9724 22440 32164 8228 17952 26180 14960 40392 5535228 2 7480 15708 23188 6732 2992 9724 7031 17204 2423529 2 17204 54604 71808 12716 29920 42636 11968 48620 6058832 2 17952 17204 35156 20196 8976 29172 26180 21692 4787235 2 3740 30668 34408 3740 23936 27676 2992 5236 8228 3740 34408 3814840 2 9724 15708 25432 8976 9724 18700 10472 33660 4413241 2 23188 5984 29172 17952 0 17952 23936 37400 6133642 2 12716 14960 27676 6732 1496 8228 13464 5984 19448 15708 20196 3590443 2 4488 13464 17952 3740 2244 5984 5236 0 5236 4488 17204 2169247 2 9724 46376 56100 5236 30668 35904 5984 11968 17952 5984 61336 6732049 2 14212 46376 60588 15708 16456 32164 11220 26180 3740052 2 17204 14212 31416 35904 9724 45628 23188 50116 7330455 2 17204 13464 30668 19448 11968 31416 20944 39644 6058856 2 3740 25432 29172 5236 20196 25432 7480 26928 3440859 2 8976 12716 21692 10472 3740 14212 11220 5984 1720464 2 5984 24684 30668 8228 18700 26928 8228 35904 4413265 2 8976 2992 11968 6732 748 7480 8976 11220 2019668 2 6732 9724 16456 8228 8976 17204 8228 35904 4413269 2 23936 28424 52360 19448 9724 29172 25432 51612 7704470 2 19448 2992 22440 14212 0 14212 14212 13464 2767671 2 10472 10472 20944 20196 2992 23188 20944 17204 3814874 2 11220 13464 24684 8228 0 8228 8228 21692 2992075 2 5236 6732 11968 4488 2992 7480 4488 18700 2318876 2 11968 34408 46376 20944 12716 33660 17204 40392 5759677 2 9724 4488 14212 6732 2992 9724 8228 11220 1944878 2 8976 30668 39644 16456 27676 44132 14212 39644 5385681 2 24684 23936 48620 5236 20944 26180 21692 20196 4188885 2 14212 20944 35156 17204 7480 24684 21692 46376 6806888 2 9724 34408 44132 9724 15708 25432 13464 1496 1496090 2 15708 63580 79288 16456 14212 30668 17952 11444 13239691 2 11220 29172 40392 8228 37400 45628 12716 31416 4413292 2 14212 12716 26928 11220 26180 3740099 2 3740 0 3740 5236 18700 23936 4488 1496 5984

100 3 21692 748 22440 22440 9724 32164102 2 15708 5984 21692 17204 16456 33660



1994 Average Gallons Per HouseholdHouse Meter Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-JanID No. Type Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other lrrigation ITotal Other Irrigation Total Other Irrigation ITotal Other Irrigation Total

103 2 7480 0 7480 10472 6732 17204104 2 13464 17204 30668 17952 129404 147356105 2 11220 10472 21692 11220 35904 47124106 2 12716 21692 34408 11968 46376 58344110 2 7480 748 8228 7480 748 8228111 2 17204 6732 23936 14212 23188 37400112 2 9724 6732 16456 11220 15708 26928113 2 13464 0 13464 15708 6732 22440116 2 9724 0 9724 9724 8976 18700120 2 3740 0 3740 4488 1496 5984122 2 21692 0 21692 17204 5984 23188125 2 5984 3740 9724 7480 39644 47124126 2 12716 11220 23936 15708 77792 93500131 2 4488 2992 7480 4488 11220 15708132 2 20196 14212 34408 23188 35904 59092142 2 36652 31416 68068 20944 54604 75548143 2 5236 14960 20196147 2 20944 6732 27676 11968 33660 45628148 2 10472 5984 16456 16456 17952 34408149 2 5236 1496 6732 8976 25432 34408151 2 26928 0 26928 27676 34408 62084152 3 10472 13464 23936 9724 26928 36652157 2 5984 54604 60588158 2 15708 14212 29920 20196 13464 33660

n 72 10 10 10 24 24 24 21 21 21 42 42 42 28 28 28 44 44 44 28 28 28Sum 97988 292468 390456 279004 477224 756228 237864 371756 609620 509388 355300 864688 363528 299948 663476 562047 1244672 1806719 381480 848232 1229712Avg 9799 29247 39046 11625 19884 31510 11327 17703 29030 12128 8460 20588 12983 10712 23696 12774 28288 41062 13624 30294 43918Min 3740 13464 17952 5236 2992 11968 3740 0 3740 3740 0 3740 2992 0 5236 4488 748 5984 3740 1496 5984Max 16456 50864 59840 23936 54604 71808 24684 63580 79288 21692 29920 44132 36652 37400 68068 26180 129404 147356 27676 114444 132396St.Dev 3965 13068 13783 5257 13602 15579 5967 16110 17562 5347 7932 10176 8561 9305 13351 5830 22604 24623 6364 22709 25132



1995 Average Gallons Per HouseholdHouse Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-AugID No. Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total

1 15708 28424 44132 12716 21692 34408 4488 0 44882 10472 5984 16456 9724 13464 23188 5984 17204 231886 11968 41140 53108 8228 27676 35904 5984 20196 26180

10 8976 5236 14212 9724 20196 2992012 6732 20944 27676 6732 16456 23188 9814 20645 3045914 5984 2244 8228 10472 10472 2094416 12716 4488 17204 11968 17204 2917217 9724 3740 13464 8228 748 8976 8228 20944 2917218 19448 21692 41140 17204 18700 35904 19448 18700 3814822 11968 47872 59840 12716 41140 53856

24 8976 24684 33660 12716 38896 5161225 11220 5236 16456 10472 17952 28424

26 15708 16456 32164 14960 23936 38896 18700 31416 5011627 25432 32912 58344 20196 43384 63580 15708 45628 6133628 6732 5984 12716 8976 18700 27676 8228 36652 4488029 11220 36652 47872 14960 38148 53108 13464 36652 5011632 22440 42636 65076 29920 26928 56848 26180 32164 5834435 2992 27676 30668 2244 26928 2917240 11968 15708 27676 8228 22440 30668 9724 28424 3814841 20944 4488 25432 22440 1496 23936 22440 18700 4114042 9724 12716 22440 7480 15708 23188

43 5236 16456 21692 4488 14212 1870047 6732 23936 30668 6732 35904 42636

49 20944 67320 88264 8976 30668 39644 17952 56100 7405252 16456 21692 38148 13464 41888 55352 18700 47124 6582455 20196 20944 41140 20944 24684 45628 22440 23936 4637656 4488 17204 21692 5984 17952 23936 5236 22440 2767659 13464 0 13464 11220 0 11220 14212 21692 3590464 28424 24684 53108 6732 26180 32912 5984 26180 3216465 9724 17204 26928 11205 4488 15693 7480 14960 2244068 8976 4488 13464 8228 8976 17204 7480 24684 3216469 22440 2244 24684 18700 16456 35156 19448 43384 6283270 15708 0 15708 16456 23936 40392 18700 41888 6058871 29172 11968 41140 26928 3740 30668 26180 14212 4039274 10472 19448 29920 7480 0 7480 6732 38896 4562875 5984 10472 16456 4488 5984 10472 5236 14212 1944876 15708 57596 73304 17204 32912 50116 21692 41888 6358077 8976 0 8976 7480 6732 14212 9724 26180 35904

78 17952 32164 50116 14212 28424 42636 15708 74052 8976081 18700 11968 30668 17204 20944 38148 17952 28424 4637685 16456 34408 50864 13464 48620 62084 17204 51612 6881688 11968 0 11968 9724 7480 17204 17952 35904 53856

90 16456 77792 94248 13464 105468 118932 15708 88264 10397291 8976 44880 53856 9724 45628 55352 9724 52360 6208492 10472 19448 29920 9724 26928 36652 18700 27676 46376 8228 21692 2992099 3740 1496 5236 3740 9724 13464 7480 0 7480

100 23188 4488 27676 22440 2992 25432 21692 6732 28424 18700 3740 22440102 18700 34408 53108 16456 16456 32912 15708 19448 35156 18700 20196 38896



1995 Average Gallons Per HouseholdHouse Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-AugID No. Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other rriation Total er Irrigation ITotal

103 6732 1496 8228 10472 11968 22440 8228 14212 22440 5984 8228 14212104 15708 56848 72556 14960 17952 32912 14960 102476 117436 16456 76296 92752105 11220 17952 29172 11220 14960 26180 94016 22440 116456 15708 24684 40392106 14960 41140 56100 11220 37400 48620 11968 52360 64328 12716 26928 39644110 9724 18700 28424 8228 19448 27676 14212 17204 31416 23936 25432 49368111 10472 16456 26928 10472 29172 39644 11220 40392 51612 3740 12716 16456112 8976 4488 13464 14212 4488 18700 9724 7480 17204 7480 9724 17204113 17952 6732 24684 12716 7480 20196 15708 14960 30668 17204 14212 31416116 6732 19448 26180 11220 32164 43384 13464 60588 74052 9724 26180 35904120 3740 5984 9724 3740 6732 10472 3740 13464 17204 4488 2992 7480122 18700 0 18700 20196 0 20196 11220 2244 13464 8976 748 9724125 9724 21692 31416 8976 20944 29920 7480 19448 26928 10472 16456 26928126 14960 45628 60588 7480 50116 57596 11220 45628 56848 16456 32912 49368131 5236 11968 17204 5236 11968 17204 5984 24684 30668 4488 13464 17952132 18700 14960 33660 22440 0 22440 25432 2992 28424 26180 11220 37400142 20944 44132 65076 23936 50864 74800 24684 45628 70312143 6732 15708 22440 8228 17952 26180 6732 17952 24684 5984 17952 23936147 13464 47124 60588 13464 40392 53856 20196 44880 65076148 9724 11220 20944 8976 17952 26928 14960 14212 29172149 7480 11968 19448 5984 18700 24684 5984 9724 15708151 26180 0 26180 16456 41888 58344 14960 64328 79288152 11968 31416 43384 8976 10472 19448 17204 16456 33660157 5984 24684 30668 4488 41140 45628 5984 39644 45628 4488 7480 11968158 4488 10472 14960 11220 11220 22440 7480 12716 20196

n 44 44 44 28 28 28 44 44 44 28 28 28 44 44 44 18 18 18 20 20 20Sum 605880 906576 1512456 325380 557260 882640 548269 808588 1356857 313412 776424 1089836 639398 1254097 1893495 270776 621588 892364 240108 373252 613360Avg 13770 20604 34374 11621 19902 31523 12461 18377 30838 11193 27729 38923 14532 28502 43034 15043 34533 49576 12005 18663 30668Min 3740 0 8228 2992 0 5236 3740 0 7480 2244 0 11220 3740 0 4488 5236 0 7480 3740 748 7480Max 29172 67320 88264 26180 77792 94248 29920 50116 63580 23936 105468 118932 94016 102476 117436 24684 88264 103972 26180 76296 92752St.Dev 6520 16531 19275 5767 19048 20749 6149 12976 13654 4947 20703 22999 13781 19698 24238 5684 22114 24948 6789 16204 19384



Post-Evaluation Average Household Water UseHouse Aug-Sep Sep-Oct Total Total Other Irrigation TotalID No. Other Irrigation ITotal Other Irrigation ITotal #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d

1 12 365 75548 6296 207 124916 10410 342 200464 16705 5492 12 365 47124 3927 129 93500 7792 256 140624 11719 3856 12 365 52360 4363 143 174284 14524 477 226644 18887 621

10 12 365 57596 4800 158 75548 6296 207 133144 11095 365

12 12 365 46466 3872 127 110405 9200 302 156871 13073 43014 12 365 53108 4426 146 59840 4987 164 112948 9412 309

16 12 365 85272 7106 234 65824 5485 180 151096 12591 41417 12 365 55352 4613 152 41888 3491 115 97240 8103 26618 12 365 108460 9038 297 78540 6545 215 187000 15583 512

22 12 365 67320 5610 184 246092 20508 674 313412 26118 859

24 12 365 65076 5423 178 152592 12716 418 217668 18139 59625 12 365 68068 5672 186 95744 7979 262 163812 13651 44926 12 365 94996. 7916 260 134640 11220 369 229636 19136 62927 12 365 94248 7854 258 202708 16892 555 296956 24746 81428 12 365 45179 3765 124 97240 8103 266 142419 11868 39029 12 365 81532 6794 223 244596 20383 670 326128 27177 89432 12 365 142868 11906 391 149600 12467 410 292468 24372 80135 12 365 19448 1621 53 148852 12404 408 168300 14025 46140 12 365 59092 4924 162 125664 10472 344 184756 15396 50641 12 365 130900 10908 359 68068 5672 186 198968 16581 54542 12 365 65824 5485 180 71060 5922 195 136884 11407 37543 12 365 27676 2306 76 63580 5298 174 91256 7605 25047 12 365 40392 3366 111 210188 17516 576 250580 20882 68749 12 365 89012 7418 244 243100 20258 666 332112 27676 91052 12 365 124916 10410 342 184756 15396 506 309672 25806 84855 12 365 121176 10098 332 134640 11220 369 255816 21318 70156 12 365 32164 2680 88 130152 10846 357 162316 13526 44559 12 365 69564 5797 191 44132 3678 121 113696 9475 31164 12 365 63580 5298 174 156332 13028 428 219912 18326 60265 12 365 53093 4424 145 51612 4301 141 104705 8725 28768 12 365 47872 3989 131 92752 7729 254 140624 11719 38569 12 365 129404 10784 355 151844 12654 416 281248 23437 77170 12 365 98736 8228 271 82280 6857 225 181016 15085 49671 12 365 133892 11158 367 60588 5049 166 194480 16207 53374 12 365 52360 4363 143 93500 7792 256 145860 12155 40075 12 365 29920 2493 82 59092 4924 162 89012 7418 24476 12 365 104720 8727 287 219912 18326 602 324632 27053 88977 12 365 50864 4239 139 51612 4301 141 102476 8540 28178 12 365 87516 7293 240 232628 19386 637 320144 26679 87781 12 365 105468 8789 289 126412 10534 346 231880 19323 63585 12 365 100232 8353 275 209440 17453 574 309672 25806 848

88 12 365 72556 6046 199 94996 7916 260 167552 13963 459

90 12 365 95744 7979 262 463760 38647 1271 559504 46625 153391 12 365 60588 5049 166 240856 20071 660 301444 25120 82692 12 365 72556 6046 199 134640 11220 369 207196 17266 56899 12 365 28424 2369 78 31416 2618 86 59840 4987 164100 12 365 130152 10846 357 28424 2369 78 158576 13215 434102 12 365 102476 8540 281 112948 9412 309 215424 17952 590



Post-Evaluation Average Household Water UseHouse Aug-Sep Sep-Oct Total Total Other Irrigation TotalID No. Other Irrigation ITotal Other Irrigation ITotal #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d

103 12 365 49368 4114 135 42636 3553 117 92004 7667 252104 12 365 93500 7792 256 400180 33348 1096 493680 41140 1353105 12 365 154604 12884 424 126412 10534 346 281016 23418 770106 12 365 75548 6296 207 225896 18825 619 301444 25120 826110 12 365 71060 5922 195 82280 6857 225 153340 12778 420111 12 365 67320 5610 184 128656 10721 352 195976 16331 537112 12 365 61336 5111 168 48620 4052 133 109956 9163 301113 12 365 92752 7729 254 50116 4176 137 142868 11906 391116 12 365 60588 5049 166 147356 12280 404 207944 17329 570120 12 365 23936 1995 66 30668 2556 84 54604 4550 150122 12 365 97988 8166 268 8976 748 25 106964 8914 293

125 12 365 50116 4176 137 121924 10160 334 172040 14337 471126 12 365 78540 6545 215 263296 21941 721 341836 28486 937

131 12 365 29920 2493 82 76296 6358 209 106216 8851 291132 12 365 136136 11345 373 79288 6607 217 215424 17952 590

142 21692 14212 35904 12 365 148852 12404 408 240856 20071 660 389708 32476 1068143 5984 12716 18700 12 365 38896 3241 107 97240 8103 266 136136 11345 373147 17204 8976 26180 12 365 97240 8103 266 181764 15147 498 279004 23250 764148 13464 2992 16456 12 365 74052 6171 203 70312 5859 193 144364 12030 396149 5984 1496 7480 12 365 39644 3304 109 68816 5735 189 108460 9038 297151 19448 29172 48620 12 365 131648 10971 361 169796 14150 465 301444 25120 826

152 10472 19448 29920 12 365 68816 5735 189 118184 9849 324 187000 15583 512

157 5984 4488 10472 12 365 32912 2743 90 172040 14337 471 204952 17079 562158 4488 13464 17952 12 365 63580 5298 174 75548 6296 207 139128 11594 381

n 7 7 7 2 2 2 72 72 72 72 72 72 72 72 72 72 72Sum 92752 89760 182512 11968 17204 29172 864 26280 5479242 456604 15012 9294349 774529 25464 14773591 1231133 40476Avg 13250 12823 26073 5984 8602 14586 12 365 76101 6342 208 129088 10757 354 205189 17099 562

Min 4488 1496 7480 5984 4488 10472 12 365 19448 1621 53 8976 748 25 54604 4550 150

Max 21692 29172 48620 5984 12716 18700 12 365 154604 12884 424 463760 38647 1271 559504 46625 1533St.Dev 6616 9603 13687 0 5818 5818 0 0 33481 2790 92 82595 6883 226 95904 7992 263


APPENDIX C, TABLE C-4B. BI-MONTHLY POST-EVALUATION WATER USE FOR DAVIS ISLANDS CONTROL HOUSEHOLDS WITH IRRIGATION METERS (June 1994 - October 1995).

1994 Average Gallons Per HouseholdHouse Meter Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-JanID No. Type Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation ITotal Other Irrigation (Total Other Irrigation Total2.2 2 14212 80036 94248 12716 2992 15708 17952 27676 456285.2 2 9724 13464 23188 9724 0 9724 20196 0 20196 14960 13464 284249.2 2 12716 18700 31416 14960 2244 17204 17952 0 17952 15708 23188 3889613.2 2 14960 35156 50116 20196 5984 26180 13464 4488 17952 19448 5236 2468414.2 3 10472 12716 23188 2992 0 2992 2992 0 2992 3740 22440 2618015.2 2 4488 48620 53108 2244 0 2244 2244 4488 6732 2992 28424 3141627.2 2 9724 2244 11968 8228 748 8976 10472 8228 1870028.2 2 11220 2244 13464 8976 0 8976 9724 1496 1122029.2 2 14960 2992 17952 15708 11220 26928 17952 23188 4114032.2 2 14960 80036 94996 13464 0 13464 11220 23936 3515635.2 2 11968 17204 29172 7480 748 8228 4488 2992 7480 4488 748 523640.2 2 5236 20944 26180 5236 6732 11968 5236 8228 1346441.2 2 24684 82280 106964 9724 748 10472 12716 8976 2169242.2 2 14960 38148 53108 11220 41140 52360 11968 44880 56848 12716 58344 7106044.2 2 18700 2244 20944 14960 748 15708 23188 1496 2468445.2 2 3740 5984 9724 5984 5236 11220 8228 31416 3964448.2 2 13464 92004 105468 11220 53108 64328 11220 11968 23188 16456 72556 8901252.2 2 19448 19448 38896 12716 36652 49368 23188 52360 7554855.2 2 9724 0 9724 5236 1496 6732 8976 14960 2393657.2 2 19448 2992 22440 13464 0 13464 17204 0 1720458.2 2 10472 6732 17204 7480 748 8228 11968 14212 2618059.2 2 26928 6732 33660 19448 20196 39644 18700 50116 6881661.2 2 4488 6732 11220 3740 3740 7480 5236 15708 2094462.2 2 22440 8228 30668 17204 0 17204 27676 25432 5310863.2 2 17204 16456 33660 15708 2244 17952 15708 14212 2992064.2 2 84524 70312 154836 19448 5236 24684 17952 17204 3515668.2 2 16456 7480 23936 13464 0 13464 11968 0 1196869.2 2 7480 39644 47124 15708 13464 29172 11220 19448 3066870.2 2 15708 6732 22440 21692 0 21692 20196 748 2094471.2 2 17952 27676 45628 22440 0 22440 20944 6732 2767672.2 2 14960 44132 59092 14960 43384 58344 17952 34408 5236079.2 2 11220 13464 24684 11220 5236 16456 12716 23936 3665280.2 2 25432 2244 27676 20944 2992 23936 26180 22440 4862082.2 2 6732 10472 17204 9724 748 10472 12716 14960 2767686.2 2 17952 60588 78540 21692 12716 34408 24684 53108 7779288.2 2 19448 9724 29172 22440 15708 38148 16456 52360 6881695.2 2 9724 8228 17952 17204 11220 28424 16456 47124 6358096.2 2 17952 0 17952 24684 4488 29172 23936 20196 44132100.2 2 6732 6732 13464 8228 14960 23188101.2 2 15708 11968 27676 14960 2244 17204 17204 20944 38148102.2 2 16456 4488 20944 14212 20196 34408105.2 2 12716 8976 21692 14960 32164 47124114.2 2 23936 14212 38148 32912 32164 65076118.2 2 21692 22440 44132 23188 21692 44880119.2 2 11968 1496 13464 10472 29172 39644122.2 2 14212 0 14212 14960 2244 17204123.2 2 3740 0 3740 3740 4488 8228125.2 2 29172 8228 37400 26928 24684 51612



1994 Average Gallons Per HouseholdHouse Meter Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-JanID No. Type Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation ITotal Other Irrigation Total Other Irigation Total Other rrigation Total126.2 2 14960 3740 18700 29172 35156 64328129.2 2 11220 0 11220 11968 31416 43384131.2 2 14960 0 14960 13464 17952 31416132.2 2 8228 2992 11220 7480 8228 15708136.2 2 32164 18700 50864 27676 30668 58344139.2 2 13464 12716 26180140.2 2 4488 8228 12716 5984 28424 34408142.2 2 36652 0 36652 35904 43384 79288143.2 2 3740 22440 26180148.2 2 89012 18700 107712 60588 80784 141372150.2 2 14960 45628 60588151.2 2 9724 9724 19448 11220 36652 47872154.2 2 23188 1496 24684157.2 2 15708 3740 19448158.2 2 10472 5236 15708 13464 27676 41140159.2 2 11968 8976 20944 16456 23936 40392n 64 8 8 8 20 20 20 19 19 19 30 30 30 29 29 29 35 35 35 29 29 29Sum 92752 276012 368764 365772 565488 931260 243100 196724 439824 427108 163064 590172 482460 259556 742016 557260 646272 1203532 483208 865436 1348644Avg 11594 34502 46096 18289 28274 46563 12795 10354 23149 14237 5435 19672 16637 8950 25587 15922 18465 34387 16662 29843 46505Min 4488 12716 23188 3740 2244 9724 2244 0 2244 3740 0 7480 2244 0 2992 3740 0 11220 2992 748 5236Max 14960 : 92004 105468 84524 82280 154836 26928 53108 64328 29172 43384 58344 89012 44880 107712 32912 53108 77792 60588 80784 141372St.Dev 3439 26688 27232 16804 30301 39623 6258 14197 15921 5819 8396 11015 16272 11239 21691 7290 13316 16922 11277 20267 27874



1995 Average Gallons Per HouseholdHouse Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-AugID No. Other Irrigation Total Other Irrigation Total Other Ilmgation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total22 20196 9724 29920 16456 14212 30668 14960 27676 426365.2 14212 15708 29920 10472 27676 381489.2 14960 14960 29920 11220 36652 4787213.2 26928 2992 29920 25432 7480 3291214.2 4488 6732 11220 4488 1496 598415.2 3740 13464 17204 2992 44132 4712427.2 11220 0 11220 8976 4488 13464 10472 21692 3216428.2 9724 0 9724 7480 0 7480 8976 14212 2318829.2 13464 27676 41140 17204 17204 34408 15708 31416 4712432.2 30668 8228 38896 1496 643 2139 12716 33660 4637635.2 6732 1496 8228 9724 44132 5385640.2 14212 1496 15708 10472 748 11220 10472 78540 8901241.2 14212 5984 20196 14212 1496 15708 11968 58344 7031242.2 9724 37400 47124 10472 45628 5610044.2 2244 2992 5236 13464 2244 15708 26180 8228 3440845.2 9724 20196 29920 9724 20944 30668 8976 34408 4338448.2 12716 82280 94996 11220 31416 4263652.2 26180 30668 56848 17204 32164 49368 16456 79288 9574455.2 5236 3740 8976 6732 7480 14212 5236 5984 1122057.2 15708 0 15708 15708 2992 18700 17952 32164 5011658.2 8228 7480 15708 8976 48620 57596 3740 26928 3066859.2 19448 71808 91256 18700 62084 80784 14960 82280 9724061.2 5984 4488 10472 4488 8976 13464 6732 11220 1795262.2 30668 44880 75548 27676 40392 68068 30511 37400 6791163.2 15708 8228 23936 14960 4488 19448 16456 28424 4488064.2 16456 77044 93500 19448 65076 84524 16456 73304 8976068.2 31416 8976 40392 748 9724 10472 13464 32184 4562869.2 11968 28424 40392 10472 31416 41888 11968 39644 5161270.2 20196 748 20944 23188 14960 38148 37400 0 3740071.2 28424 4488 32912 49368 7480 56848 32912 56848 8976072.2 14960 38148 53108 13464 23936 37400 17952 28424 4637679.2 11220 2244 13464 11968 24684 36652 12716 30668 4338480.2 35156 5236 40392 30668 5236 35904 34408 16456 5086482.2 9724 748 10472 8228 32912 41140 7480 27676 3515686.2 19448 49368 68816 12716 50864 63580 16456 60588 7704488.2 20196 92004 112200 20196 31416 51612 42636 49368 9200495.2 11968 27676 39644 11220 27676 38896 12716 28424 4114096.2 24684 5236 29920 25432 8228 33660 20944 18700 39644100.2 10472 4488 14960 7480 2992 10472 11968 11968 23936 8976 3740 12716101.2 17204 22440 39644 14212 14960 29172 16456 22440 38896102.2 44132 17204 61336 17952 35156 53108 16456 29172 45628 17204 19448 36652105.2 15708 20196 35904 14960 14960 29920 16456 24684 41140 13464 15708 29172114.2 21692 63580 85272 13464 31416 44880 14212 67320 81532 23188 76296 99484118.2 16456 14960 31416 16456 23936 40392 26180 22440 48620119.2 14212 8976 23188 14212 15708 29920 14960 43384 58344 14960 11220 26180122.2 14960 0 14960 16456 1496 17952 17952 1496 19448 17952 1496 19448123.2 2992 2992 5984 3740 3740 7480 3740 4488 8228125.2 29920 4488 34408 19448 8976 28424 23188 43384 66572 20196 17952 38148



1995 Average Gallons Per HouseholdHouse Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-AugID No. Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irrigation Total Other Irigation Total Other Irrigation Total126.2 31416 25432 56848 24684 20196 44880 31416 74052 105468 28424 21692 50116129.2 8976 20944 29920 12716 20196 32912 9724 66572 76296131.2 14960 2992 17952 16456 5236 21692 37400 31416 68816 19448 7480 26928132.2 16456 24048 40504 7480 13464 20944 14960 24684 39644 12716 11968 24684136.2 24684 2992 27676 29172 12716 41888 26928 58344 85272139.2 14212 12716 26928 11968 12716 24684 5236 12716 17952 6732 14212 20944140.2 5236 17952 23188 4488 20944 25432 5984 35156 41140142.2 19448 18700 38148 25432 122672 148104 30668 120428 151096143.2 4488 14960 19448 3740 11220 14960 5984 12716 18700 2244 12716 14960148.2 21692 8228 29920 23936 13464 37400 20944 20944 41888150.2 25432 32164 57596 10472 35156 45628 8228 46376 54604 39644 72556 112200151.2 8976 28424 37400 8976 68068 77044 10472 68068 78540154.2 18700 16456 35156 11220 748 11968 21692 0 21692 18700 0 18700157.2 16456 0 16456 14960 1496 16456 20196 16456 36652 17952 7480 25432158.2 11220 23936 35156 11220 22440 33660 11220 25432 36652159.2 39644 29920 69564 14212 16456 30668 15708 38896 54604n 35 35 35 29 29 29 35 35 35 29 29 29 35 35 35 21 21 21 15 15 15Sum 644776 593276 1238052 427108 608872 1035980 504152 523495 1027647 402424 868428 1270852 595999 1164636 1760635 352308 832524 1184832 261800 293964 555764Avg 18422 16951 35373 14728 20996 35723 14404 14957 29361 13877 29946 43822 17029 33275 50304 16777 39644 56421 17453 19598 37051Min 2244 0 5236 2992 748 5984 748 0 2139 2992 1496 5984 5236 0 17952 3740 0 8228 2244 0 12716Max 44132 77044 93500 39644 92004 112200 49368 65076 84524 29172 122672 148104 37400 78540 105468 42636 120428 151096 39644 76296 112200St.Dev 9329 18775 22117 8585 23698 26526 8884 15685 19085 7333 24369 25987 8237 20782 23154 10833 29956 33833 8952 23150 29610



Post-Evaluation Average Household Water UseHouse Aug-Sep Sep-Oct Total Total Other Irrigation TotalID No. Other Irrigation ITotal Other Irrigation ITotal #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d2.2 12 365 96492 8041 264 162316 13526 445 258808 21567 7095.2 12 365 79288 6607 217 70312 5859 193 149600 12467 4109.2 12 365 87516 7293 240 95744 7979 262 183260 15272 50213.2 12 365 120428 10036 330 61336 5111 168 181764 15147 49814.2 12 365 29172 2431 80 43384 3615 119 72556 6046 19915.2 12 365 18700 1558 51 139128 11594 381 157828 13152 43227.2 12 365 59092 4924 162 37400 3117 102 96492 8041 26428.2 12 365 56100 4675 154 17952 1496 49 74052 6171 20329.2 12 365 94996 7916 260 113696 9475 311 208692 17391 57232.2 12 365 84524 7044 232 146503 12209 401 231027 19252 63335.2 12 365 44880 3740 123 67320 5610 184 112200 9350 30740.2 12 365 50864 4239 139 116688 9724 320 167552 13963 45941.2 12 365 87516 7293 240 157828 13152 432 245344 20445 67242.2 12 365 71060 5922 195 265540 22128 728 336600 28050 92244.2 12 365 98736 8228 271 17952 1496 49 116688 9724 32045.2 12 365 46376 3865 127 118184 9849 324 164560 13713 45148.2 12 365 76296 6358 209 343332 28611 941 419628 34969 115052.2 12 365 115192 9599 316 250580 20882 687 365772 30481 100255.2 12 365 41140 3428 113 33660 2805 92 74800 6233 20557.2 12 365 99484 8290 273 38148 3179 105 137632 11469 37758.2 12 365 50864 4239 139 104720 8727 287 155584 12965 42659.2 12 365 118184 9849 324 293216 24435 803 411400 34283 112761.2 12 365 30668 2556 84 50864 4239 139 81532 6794 22362.2 12 365 156175 13015 428 156332 13028 428 312507 26042 85663.2 12 365 95744 7979 262 74052 6171 203 169796 14150 46564.2 12 365 174284 14524 477 308176 25681 844 482460 40205 132268.2 12 365 87516 7293 240 58344 4862 160 145860 12155 40069.2 12 365 68816 5735 189 172040 14337 471 240856 20071 66070.2 12 365 138380 11532 379 23188 1932 64 161568 13464 44371.2 12 365 172040 14337 471 103224 8602 283 275264 22939 75472.2 12 365 94248 7854 258 212432 17703 582 306680 25557 84079.2 12 365 71060 5922 195 100232 8353 275 171292 14274 46980.2 12 365 172788 14399 473 54604 4550 150 227392 18949 62382.2 12 365 54604 4550 150 87516 7293 240 142120 11843 38986.2 12 365 112948 9412 309 287232 23936 787 400180 33348 109688.2 12 365 141372 11781 387 250580 20882 687 391952 32663 107495.2 12 365 79288 6607 217 150348 12529 412 229636 19136 62996.2 12 365 137632 11469 377 56848 4737 156 194480 16207 533100.2 12 365 53856 4488 148 44880 3740 123 98736 8228 271101.2 12 365 95744 7979 262 94996 7916 260 190740 15895 523102.2 12 365 126412 10534 346 125664 10472 344 252076 21006 691105.2 12 365 88264 7355 242 116688 9724 320 204952 17079 562114.2 12 365 129404 10784 355 284988 23749 781 414392 34533 1135118.2 32164 29920 62084 12 365 136136 11345 373 135388 11282 371 271524 22627 744119.2 12 365 80784 6732 221 109956 9163 301 190740 15895 523122.2 12 365 96492 8041 264 6732 561 18 103224 8602 283123.2 4488 0 4488 12 365 22440 1870 61 15708 1309 43 38148 3179 105125.2 12 365 148852 12404 408 107712 8976 295 256564 21380 703



Post-Evaluation Average Household Water UseHouse Aug-Sep Sep-Oct Total Total Other Irrigation TotalID No. Other Irrigation Total Other Irrigation Total #Months #Days gals g/mth g/d gals g/mth g/d gals g/mth g/d126.2 12 365 160072 13339 439 180268 15022 494 340340 28362 932129.2 11968 0 11968 12 365 66572 5548 182 139128 11594 381 205700 17142 564131.2 12 365 116688 9724 320 65076 5423 178 181764 15147 498132.2 12 365 67320 5610 184 85384 7115 234 152704 12725 418136.2 33660 22440 56100 12 365 174284 14524 477 145860 12155 400 320144 26679 877139.2 17204 19448 36652 12 365 68816 5735 189 84524 7044 232 153340 12778 420140.2 5236 8228 13464 12 365 31416 2618 86 118932 9911 326 150348 12529 412142.2 23188 91256 114444 12 365 171292 14274 469 396440 33037 1086 567732 47311 1555143.2 5984 11220 17204 12 365 26180 2182 72 85272 7106 234 111452 9288 305148.2 17952 7480 25432 12 365 234124 19510 641 149600 12467 410 383724 31977 1051150.2 19448 33660 53108 12 365 118184 9849 324 265540 22128 728 383724 31977 1051151.2 12716 14212 26928 12 365 62084 5174 170 225148 18762 617 287232 23936 787154.2 17204 0 17204 12 365 110704 9225 303 18700 1558 51 129404 10784 355157.2 15708 3740 19448 12 365 100980 8415 277 32912 2743 90 133892 11158 367158.2 12716 20196 32912 12 365 70312 5859 193 124916 10410 342 195228 16269 535159.2 14212 7480 21692 12 365 112200 9350 307 125664 10472 344 237864 19822 652n 10 10 10 5 5 64 64 64 64 64 64 64 64 64 64 64Sum 168300 201212 369512 75548 68068 143616 768 23360 6084075 507006 16669 8127027 677252 22266 14211102 1184259 38935Avg 16830 20121 36951 15110 13614 28723 12 365 95064 7922 260 126985 10582 348 222048 18504 608Min 4488 0 4488 5984 0 17204 12 365 18700 1558 51 6732 561 18 38148 3179 105Max 33660 91256 114444 19448 33660 53108 12 365 234124 19510 641 396440 33037 1086 567732 47311 1555St.Dev 10062 26806 32856 5273 13458 15882 0 0 44926 3744 123 88820 7402 243 111795 9316 306


APPENDIX C, TABLE C-5A. BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS WITHOUT IRRIGATION METERS (March 1993 - July 1994).

House Evaluation Dates Meter 1993 Average Gallons Per Household 1994 Average Gallons Per Household No. No. Total Household Water UseNo. Site Visit Report Type Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Mnths. Days Gals g/m g/d

3 4/8/94 4/8/94 1 16456 29172 32912 11220 18700 11220 12 365 119680 9973 3285 4/4/94 4/4/94 1 7480 18700 18700 11968 17952 11968 12 365 86768 7231 2387 4/5/94 4/5/94 1 2992 5236 5236 5236 4488 3740 12 365 26928 2244 74

11 4/7/94 4/7/94 1 28424 26180 23936 12716 23936 16456 12 365 131648 10971 36113 4/8/94 4/26/94 1 17204 53856 36652 17204 19448 20944 12 365 165308 13776 45315 4/14/94 4/14/94 1 45628 42636 37400 31416 42636 35904 12 365 235620 19635 64619 4/13/94 4/13/94 1 67320 50864 83776 59840 74052 77792 12 365 413644 34470 113320 4/13/94 4/6/94 1 11968 12716 14212 31416 45628 29172 12 365 145112 12093 39821 4/13/94 4/13/94 1 35156 64328 59092 35156 77792 37400 12 365 308924 25744 84623 4/14/94 4/18/94 1 11220 23936 29172 24684 17952 17204 12 365 124168 10347 34030 4/22/94 4/22/94 1 10472 29172 17952 9724 22440 11968 12 365 101728 8477 27933 4/19/94 4/19/94 1 38896 56848 73304 41140 50116 39644 12 365 299948 24996 82236 4/20/94 4/26/94 1 20944 47124 64328 43384 44880 43384 12 365 264044 22004 72337 4/20/94 4/25/94 1 14212 20944 18700 8976 19448 16456 12 365 98736 8228 27148 4/27/94 4/27/94 1 25432 29920 25432 12716 21692 13464 12 365 128656 10721 35250 5/2/94 5/3/94 1 29172 28424 14960 29172 21692 11968 12 365 135388 11282 37151 5/3/94 5/3/94 1 2992 7480 14960 14212 24684 22440 12 365 86768 7231 23858 5/5/94 5/5/94 1 14212 24684 29172 3740 9724 12716 12 365 94248 7854 25872 5/17/94 5/17/94 1 54604 32912 34408 39644 41140 40392 12 365 243100 20258 66680 5/24/94 5/24/94 1 19448 14212 10472 14212 11220 10472 12 365 80036 6670 21984 5/25/94 5/25/94 1 44880 34408 22440 15708 35156 29920 12 365 182512 15209 50093 6/2/94 6/2/94 1 11220 13464 9724 13464 10472 11220 12 365 69564 5797 19194 6/2/94 6/6/94 1 86020 80036 71060 59840 74052 83028 12 365 454036 37836 124495 6/3/94 6/3/94 1 12716 53856 25432 10472 5984 41888 12 365 150348 12529 41298 6/7/94 6/19/94 1 31416 31416 17204 20944 14960 41888 12 365 157828 13152 432

101 6/8/94 6/28/94 1 5984 8228 18700 20196 15708 20196 12 365 89012 7418 244107 6/15/94 6/19/94 1 10472 17204 14960 17952 15708 27676 12 365 103972 8664 285114 7/7/94 7/7/94 1 83776 33660 8976 5236 14960 60588 12 365 207196 17266 568119 7/13/94 7/13/94 1 8228 8228 20196 40392 22440 23936 12 365 123420 10285 338123 7/14/94 7/20/94 1 46376 20944 9724 14212 9724 29920 12 365 130900 10908 359124 7/18/94 7/18/94 1 29920 29172 6732 15708 12716 32164 12 365 126412 10534 346127 7/19/94 8/1/94 1 44880 9724 39644 14960 17204 41888 12 365 168300 14025 461130 7/20/94 7/20/94 1 47124 26180 34408 23188 38896 37400 12 365 207196 17266 568138 7/29/94 8/1/94 1 32164 20944 11968 12716 11968 23188 12 365 112948 9412 309141 8/2/94 8/9/94 1 59092 39644 43384 17952 24684 41888 12 365 226644 18887 621144 8/9/94 8/9/94 1 14960 9724 23936 8976 24684 26180 12 365 108460 9038 297146 8/9/94 8/9/94 1 57596 47124 55352 47872 53108 53856 12 365 314908 26242 863150 8/12/94 8/18/94 1 54604 30668 45628 35156 52360 47124 12 365 265540 22128 728153 8/17/94 8/17/94 1 25432 11220 96492 34408 34408 24684 12 365 226644 18887 621155 8/18/94 8/20/94 1 50116 32912 33660 32164 29172 33660 12 365 211684 17640 580156 8/18/94 8/18/94 1 14212 34408 25432 35904 35904 46376 12 365 192236 16020 527160 8/27/94 8/27/94 1 17204 11220 22440 20944 31416 26928 12 365 130152 10846 357

n 42 42 42 6 11 11 18 21 21 21 21 21 21 21 21 15 10 10 3 42 42 42 42 42Sum 181764 231132 372504 538560 907324 531828 579700 360536 696388 581196 583440 433840 427856 336600 409904 77792 504 15330 7250364 604197 19864Avg 6/3/94 6/6/94 30294 21012 33864 29920 43206 25325 27605 17168 33161 27676 27783 20659 28524 33660 40990 25931 12 365 172628 14386 473Min 4/4/94 4/4/94 2992 7480 2992 5984 5236 8228 5236 3740 4488 9724 3740 8976 10472 11220 23188 24684 12 365 26928 2244 74Max 8/27/94 8/27/94 67320 45628 64328 86020 83776 80036 59840 71060 77792 96492 77792 74052 53108 83028 60588 26928 12 365 454036 37836 1244St.Dev 2/17/00 2/18/00 22329 13524 21961 18874 24331 14691 14747 14303 20578 19824 18061 14574 14465 19229 11983 1143 0 0 90990 7583 249

TABLEC5A.XLSPage 1 of I

APPENDIX C, TABLE C-5B. BI-MONTHLY PRE-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS CONTROL HOUSEHOLDS WITHOUT IRRIGATION METERS (March 1993 - July 1994).


6.2 1 11968 21692 14212 11220 14960 14960 12 365 89012 7418 24411.2 1 32164 29920 25432 11220 14960 11968 12 365 125664 10472 34416.2 1 32164 32912 25432 21692 22440 7480 12 365 142120 11843 38918.2 1 15708 44880 26928 22440 24684 17952 12 365 152592 12716 41823.2 1 20944 23188 13464 16456 8976 7480 12 365 90508 7542 24833.2 1 19448 37400 26180 19448 25432 15708 12 365 143616 11968 39336.2 1 2992 5236 5236 5236 8976 9724 12 365 37400 3117 10237.2 1 2244 5236 5236 2992 4488 3740 12 365 23936 1995 6638.2 1 23188 32912 42636 30668 32164 24684 12 365 186252 15521 51043.2 1 16456 30668 28424 28424 20944 22440 12 365 147356 12280 40446.2 1 26180 26928 20944 14960 25432 20196 12 365 134640 11220 36947.2 1 5984 58344 70312 59840 81532 44132 12 365 320144 26679 87749.2 1 11220 16456 12716 9724 7480 12716 12 365 70312 5859 19353.2 1 17204 11220 5984 6732 2244 6732 12 365 50116 4176 13754.2 1 9724 9724 12716 14212 15708 12716 12 365 74800 6233 20556.2 1 32912 53856 42636 23188 22440 14960 12 365 189992 15833 52160.2 1 140624 112948 83776 75548 51612 67320 12 365 531828 44319 145767.2 1 12716 54604 77792 71060 38896 32164 12 365 287232 23936 78773.2 1 14960 18700 21692 20944 23188 21692 12 365 121176 10098 33275.2 1 12716 9724 7480 11220 9724 6732 12 365 57596 4800 15876.2 1 15708 14212 13464 16456 14960 17204 12 365 92004 7667 25278.2 1 13464 9724 5984 5984 10472 10472 12 365 56100 4675 15481.2 1 18700 11968 97988 42636 16456 23936 12 365 211684 17640 58085.2 1 27676 19448 22440 20944 27676 22440 12 365 140624 11719 38587.2 1 26180 13464 17204 18700 18700 29172 12 365 123420 10285 33891.2 1 30668 26928 14212 29172 21692 36652 12 365 159324. 13277 43793.2 1 25432 14212 6732 12716 7480 14212 12 365 80784 6732 22194.2 1 33660 18700 6732 15708 8976 12716 12 365 96492 8041 26497.2 1 22440 17952 8228 10472 8228 14960 12 365 82280 6857 22598.2 1 11220 15708 8976 23188 10472 8228 12 365 77792 6483 213

107.2 1 37400 17952 22440 11968 3740 30668 12 365 124168 10347 340108.2 1 50116 55352 32164 49368 48620 45628 12 365 281248 23437 771110.2 1 55352 33660 50864 47872 43384 44880 12 365 276012 23001 756111.2 1 24684 18700 23188 14212 26928 43384 12 365 151096 12591 414112.2 1 78540 47124 96492 62084 65076 65076 12 365 414392 34533 1135116.2 1 41888 25432 29920 23936 23936 40392 12 365 185504 15459 508117.2 1 56848 25432 16456 20944 35904 53856 12 365 209440 17453 574120.2 1 5984 5236 5236 4488 9724 15708 12 365 46376 3865 127127.2 1 17204 5984 4488 12716 15708 20944 12 365 77044 6420 211130.2 1 56848 34408 32164 27676 38148 35904 12 365 225148 18762 617133.2 1 17204 18700 11220 17204 23936 50116 12 365 138380 11532 379135.2 1 32912 34408 10472 13464 10472 15708 12 365 117436 9786 322137.2 1 10472 5236 4488 5236 9724 7480 12 365 42636 3553 117138.2 1 31416 29920 15708 21692 56848 59092 12 365 214676 17890 588141.2 1 33660 19448 21692 26928 27676 32912 12 365 162316 13526 445146.2 1 11968 5984 12716 5236 4488 5984 12 365 46376 3865 127153.2 1 19448 8976 16456 11968 38148 23188 12 365 118184 9849 324156.2 1 26928 11220 14212 13464 29172 35904 12 365 130900 10908 359

n 48 5 11 16 19 28 20 28 20 28 20 28 20 23 9 12 1 48 48 48 48 48Sum 73304 224400 480216 592416 799612 531828 642532 391204 685168 439824 564740 329120 612612 217668 450296 23188 576 17520 7058128 588177 19337Avg 14661 20400 30014 31180 28558 26591 22948 19560 24470 21991 20169 16456 26635 24185 37525 23188 12 365 147044 12254 403Min 2992 2244 5236 5236 5236 5236 5236 2992 4488 4488 2244 3740 4488 7480 5984 23188 12 365 23936 1995 66Max 23188 32912 140624 58344 112948 77792 97988 71060 96492 81532 62084 44132 67320 53856 65076 23188 12 365 531828 44319 1457St.Dev 7748 10778 32159 15672 24658 18462 22164 17258 21641 16331 15064 11031 18362 16238 17193 #DIV/01 0 0 98701 8225 270

TABLECSB.XLSPage 1 of 1

APPENDIX C, TABLE C-6A. BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS PARTICIPANT HOUSEHOLDS WITHOUT IRRIGATION METERS (June 1994 - Oct.1995).

House Evaluation Dates Meter 1994 Average Gallons Per Household 1995 Average Gallons Per Household No. No. Total Household Water UseNo. Site Visit Report Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-Aug Aug-Sep Sep-Oct Mnths. Days Gals g/m g/d

3 4/8/94 4/8/94 1 11220 7480 19448 8228 14960 22440 12 365 83776 6981 2305 4/4/94 4/4/94 1 20196 14212 14960 14960 11968 12716 12 365 89012 7418 2447 4/5/94 4/5/94 1 3740 7480 5236 2992 2992 2992 12 365 25432 2119 70

11 4/7/94 4/7/94 1 22440 23188 25432 28424 18700 22440 12 365 140624 11719 38513 4/8/94 4/26/94 1 31416 13464 8228 22440 17952 14960 12 365 108460 9038 29715 4/14/94 4/14/94 1 38896 31416 28424 37400 19448 29920 12 365 185504 15459 50819 4/13/94 4/13/94 1 22440 17952 36652 32912 40392 37400 12 365 187748 15646 51420 4/13/94 4/6/94 1 48620 43384 47124 55352 45628 36652 12 365 276760 23063 75821 4/13/94 4/13/94 1 23188 5236 23188 32164 31416 34408 12 365 149600 12467 41023 4/14/94 4/18/94 1 28424 35156 41888 32912 22440 33660 12 365 194480 16207 53330 4/22/94 4/22/94 1 22440 4488 5984 7480 8976 8976 12 365 58344 4862 16033 4/19/94 4/19/94 1 46376 29920 30668 35156 35156 38148 12 365 215424 17952 59036 4/20/94 4/26/94 1 10472 8228 9724 8228 8228 25432 12 365 70312 5859 19337 4120/94 4/25/94 1 17952 13464 6732 38148 14212 7480 12 365 97988 8166 26848 4/27/94 4/27/94 1 21692 7480 6732 16456 4488 14212 12 365 71060 5922 19550 5/2/94 5/3/94 1 20196 11220 20944 9724 11968 23936 12 365 97988 8166 26851 5/3/94 5/3/94 1 21692 8976 9724 23936 20196 21692 12 365 106216 8851 29158 5/5/94 5/5/94 1 1496 11968 11220 5984 8228 13464 12 365 52360 4363 14372 5/17/94 5/17/94 1 18700 16456 38148 24684 27676 35904 12 365 161568 13464 44380 5/24/94 5/24/94 1 11220 9724 10472 10472 11968 11968 12 365 65824 5485 18084 5/25/94 5/25/94 1 14960 11220 18700 14960 18700 26180 12 365 104720 8727 28793 6/2/94 6/2/94 1 11968 11968 10472 8976 8976 7480 12 365 59840 4987 16494 6/2/94 6/6/94 1 32164 2244 90508 97988 98736 68816 12 365 390456 32538 107095 6/3/94 6/3/94 1 11968 33660 27676 16456 51612 29172 12 365 170544 14212 46798 6/7/94 6/19/94 1 28424 25432 26928 19448 20196 15708 12 365 136136 11345 373

101 6/8/94 6/28/94 1 18700 19448 39644 8228 27676 26180 12 365 139876 11656 383107 6/15/94 6/19/94 1 12716 18700 18700 17204 14960 15708 12 365 97988 8166 268114 7/7/94 7/7/94 1 4488 5236 8976 5984 8976 33660 12 365 67320 5610 184119 7/13/94 7/13/94 1 29172 20944 47124 35904 33660 47124 12 365 213928 17827 586123 7/14/94 7/20/94 1 34408 86768 15708 19448 10472 9724 12 365 176528 14711 484124 7/18/94 7/18/94 1 7480 12716 7480 16456 21692 8976 12 365 74800 6233 205127 7/19/94 811/94 1 19448 22440 12716 51612 30668 11220 12 365 148104 12342 406130 7/20/94 7/20/94 1 8228 37400 23188 27676 29172 22440 12 365 148104 12342 406138 7/29/94 8/1/94 1 11968 11968 10472 14212 8228 11968 12 365 68816 5735 189141 8/2/94 8/9/94 1 20196 17204 16456 26928 15708 18700 12 365 115192 9599 316144 8/9/94 8/9/94 1 10472 19448 17204 15708 25432 1496 12 365 89760 7480 246146 8/9/94 8/9/94 1 15708 92004 59840 72556 48620 37400 12 365 326128 27177 894150 8/12/94 8/18/94 1 27676 21692 14960 35904 29920 23936 12 365 154088 12841 422153 8/17/94 8/17/94 1 5984 25432 11220 21692 27676 5236 12 365 97240 8103 266155 8/18/94 8/20/94 1 21692 17204 14960 28424 26928 19448 12 365 128656 10721 352156 8/18/94 8/18/94 1 36652 30668 32164 33660 26180 29920 12 365 189244 15770 518160 8/27/94 8/27/94 1 6732 23936 11968 14960 17204 5984 12 365 80784 6732 221

n 42 42 42 9 10 16 14 21 21 21 21 21 21 21 21 12 11 5 7 42 42 42 42 42Sum 252076 189244 306680 176528 351560 454784 638044 508640 400180 452540 466752 641036 276012 318648 31416 152592 504 15330 5616732 468061 15388Avg 6/3/94 6/6/94 28008 18924 19168 12609 16741 21656 30383 24221 19056 21550 22226 30526 23001 28968 6283 21799 12 365 133732 11144 366Min 4/4/94 4/4/94 17952 3740 1496 4488 2244 5236 7480 2992 4488 2992 7480 2992 7480 8228 1496 11220 12 365 25432 2119 70Max 8/27/94 8/27/94 48620 46376 43384 29920 47124 38148 90508 92004 97988 59840 98736 72556 68816 48620 9724 37400 12 365 390456 32538 1070St.Dev 2/17/00 2/18/00 10120 11615 11911 8098 12620 10781 22571 19084 20009 13838 19313 15682 15890 11842 3286 9466 0 0 74103 6175 203


APPENDIX C, TABLE C-6B. BI-MONTHLY POST-EVALUATION TOTAL WATER USE FOR DAVIS ISLANDS CONTROLS HOUSEHOLDS WITHOUT IRRIGATION METERS (June 1994 - Oct.1995).

House Meter 1994 Average Gallons Per Household 1995 Average Gallons Per Household No. No. Total Household Water UseNo. Type Jun-Jul Jul-Aug Aug-Sep Sep-Oct Oct-Nov Nov-Dec Dec-Jan Jan-Feb Feb-Mar Mar-Apr Apr-May May-Jun Jun-Jul Jul-AuAugug-Sep Sep-Oct Mnths.Days Gals g/m g/d6.2 1 14212 14212 14212 13464 14960 22440 12 365 93500 7792 25611.2 1 24684 13464 7480 12716 5236 14212 12 365 77792 6483 21316.2 1 32164 5984 6732 26180 7480 14212 12 365 92752 7729 25418.2 1 13464 14960 37400 26928 19448 44132 12 365 156332 13028 42823.2 1 100980 57596 28424 42636 30668 30668 12 365 290972 24248 79733.2 1 18700 16456 23188 42486 12716 26180 12 365 139726 11644 38336.2 1 11220 9724 26180 20944 20944 21692 12 365 110704 9225 30337.2 1 4488 2992 4488 8228 4488 2992 12 365 27676 2306 7638.2 1 15708 11968 21692 28424 21692 26180 12 365 125664 10472 34443.2 1 23936 21692 18700 26180 10472 19448 12 365 120428 10036 33046.2 1 19448 9724 11968 15708 11220 14960 12 365 83028 6919 22747.2 1 72556 36652 15708 50116 43384 47872 12 365 266288 22191 73049.2 1 12716 9724 5236 5236 21692 20196 12 365 74800 6233 20553.2 1 5236 3740 4488 5984 5236 6732 12 365 31416 2618 8654.2 1 31416 10472 16456 20196 13464 22440 12 365 114444 9537 31456.2 1 6732 29172 33660 17204 32164 30668 12 365 149600 12467 41060.2 1 23188 23188 47102 35156 26180 70312 12 365 225126 18760 61767.2 1 36652 37400 44880 26928 108460 85272 12 365 339592 28299 93073.2 1 22440 20196 21692 22440 18700 19448 12 365 124916 10410 34275.2 1 23936 14212 17952 9724 11968 20196 12 365 97988 8166 26876.2 1 19448 17952 21692 10472 11968 17204 12 365 98736 8228 27178.2 1 9724 8976 6732 10472 6732 5236 12 365 47872 3989 13181.2 1 15708 13464 9724 18700 7480 9724 12 365 74800 6233 20585.2 1 25432 3740 20196 11220 26928 32912 12 365 120428 10036 33087.2 1 12716 8976 15708 20944 11968 29172 12 365 99484 8290 27391.2 1 10472 12716 31416 11968 19448 35904 12 365 121924 10160 33493.2 1 8228 7480 27676 37400 33660 17952 12 365 132396 11033 36394.2 1 8228 6732 8976 8228 8976 13464 12 365 54604 4550 15097.2 1 5984 21692 7480 20196 23936 10472 12 365 89760 7480 24698.2 1 5984 6732 13464 7480 21692 8976 12 365 64328 5361 176107.2 1 13464 150348 80036 49368 62084 62832 12 365 418132 34844 1146108.2 1 46376 51612 45628 42636 65824 53108 12 365 305184 25432 836110.2 1 14960 23936 40392 35156 42636 33660 12 365 190740 15895 523111.2 1 17204 41888 36652 37400 38896 32912 12 365 204952 17079 562112.2 1 26180 42636 41140 39644 44132 48620 12 365 242352 20196 664116.2 1 47124 62832 48620 44880 57596 17952 12 365 279004 23250 764117.2 1 14960 50864 32164 36652 35904 38896 12 365 209440 17453 574120.2 1 748 1496 7480 748 5984 1496 12 365 17952 1496 49127.2 1 2992 5236 5984 6732 8976 8228 12 365 38148 3179 105130.2 1 17204 32912 24684 32912 26928 33660 12 365 168300 14025 461133.2 1 11220 18700 12716 23936 25432 8976 12 365 100980 8415 277135.2 1 10472 13464 8976 9724 13464 44880 12 365 100980 8415 277137.2 1 2244 3740 2992 4488 7480 6732 12 365 27676 2306 76138.2 1 15708 30668 29920 23936 47124 21692 12 365 169048 14087 463141.2 1 10472 11220 11220 10472 8976 5984 12 365 58344 4862 160146.2 1 10472 9724 9724 2244 5236 3740 12 365 41140 3428 113153.2 1 8976 21692 11968 11968 14212 10472 12 365 79288 6607 217156.2 1 8976 18700 46376 28424 25432 11968 12 365 139876 11656 383n 48 7 14 16 25 20 28 20 28 20 28 20 28 13 14 4 3 48 48 48 48 48Sum 278256 227392 285736 383724 404668 631290 553520 609470 361284 581944 539308 770440 378488 310420 100980 21692 576 17520 6438612 536551 17640Avg 39751 16242 17859 15349 20233 22546 27676 21767 18064 20784 26965 27516 29114 22173 25245 7231 12 365 134138 11178 368Min 4488 5236 2992 748 2244 1496 3740 5236 2992 748 2992 2244 7480 1496 6732 3740 12 365 17952 1496 49Max 100980 31416 57596 47124 150348 62832 80036 48620 49368 46376 108460 70312 85272 53108 44880 11968 12 365 418132 34844 1146St.Dev 34194 6680 14945 11101 32024 15762 18576 13606 13872 13004 24166 18057 22736 16310 19432 4253 0 0 88720 7393 243


APPENDIX C, TABLE C-7A. DIFFERENCE BETWEEN PRE AND POST BI-MONTHLY TOTAL WATER USE FOR DAVIS ISLANDS PARTICIPANTHOUSEHOLDS (March 1993 - October 1995).

Pre-Evaluation Post-Evaluation Difference Pre-PostHouse Evaluation Dates Meter Total Water No. Average Total Water No. Average Total Water AverageNo. Site Visit Report Type Use Gals Days g/d Use Gals Days g/d Use Gals g/d

1 4/7/94 4/7/94 2 455532 365 1248 200464 365 549 255068 6992 4/7/94 4/7/94 2 284988 365 781 140624 365 385 144364 3963 4/8/94 4/8/94 1 119680 365 328 83776 365 230 35904 984+5 4/4/94 4/4/94 1 86768 365 238 89012 365 244 -2244 -66 4/4/94 4/4/94 2 351560 365 963 226644 365 621 124916 3427 4/5/94 4/5/94 1 26928 365 74 25432 365 70 1496 48+9+

10 4/6/94 4/6/94 2 133892 365 367 133144 365 365 748 211 4/7/94 4/7/94 1 131648 365 361 140624 365 385 -8976 -2512 4/7/94 4/7/94 2 237714 365 651 156871 365 430 80844 22113 4/8/94 4/26/94 1 165308 365 453 108460 365 297 56848 15614 4/8/94 4/26/94 2 259556 365 711 112948 365 309 146608 40215 4/14/94 4/14/94 1 235620 365 646 185504 365 508 50116 13716 4/14/94 4/18/94 2 196724 365 539 151096 365 414 45628 12517 4/15/94 4/18/94 2 189244 365 518 97240 365 266 92004 25218 4/15/94 4/15/94 2 183260 365 502 187000 365 512 -3740 -1019 4/13/94 4/13/94 1 413644 365 1133 187748 365 514 225896 61920 4/13/94 4/6/94 1 145112 365 398 276760 365 758 -131648 -36121 4/13/94 4/13/94 1 308924 365 846 149600 365 410 159324 43722 4/14/94 4/14/94 2 468996 365 1285 313412 365 859 155584 42623 4/14/94 4/18/94 1 124168 365 340 194480 365 533 -70312 -19324 4/14/94 4/14/94 2 271524 365 744 217668 365 596 53856 14825 4/15/94 4/18/94 2 225148 365 617 163812 365 449 61336 16826 4/15/94 4/19/94 2 287232 365 787 229636 365 629 57596 15827 4/21/94 4/21/94 2 390508 365 1070 296956 365 814 93552 25628 4/21/94 4/21/94 2 191488 365 525 142419 365 390 49069 13429 4/22/94 4/22/94 2 363528 365 996 326128 365 894 37400 10230 4/22/94 4/22/94 1 101728 365 279 58344 365 160 43384 11931 #32 4/18/94 4/18/94 2 721820 365 1978 292468 365 801 429352 117633 4/19/94 4/19/94 1 299948 365 822 215424 365 590 84524 23234 #35 4/20/94 4/20/94 2 204204 365 559 168300 365 461 35904 9836 4/20/94 4/26/94 1 264044 365 723 70312 365 193 193732 531


APPENDIX C, TABLE C-7A. (CONTINUED).


37 4/20/94 4/25/94 1 98736 365 271 97988 365 268 748 238 ?39 +40 4/23/94 4/25/94 2 341836 365 937 184756 365 506 157080 43041 4/25/94 4/25/94 2 288728 365 791 198968 365 545 89760 24642 4/25/94 4/25/94 2 244596 365 670 136884 365 375 107712 29543 4/26/94 4/26/94 2 143616 365 393 91256 365 250 52360 14344 #45 #46 +

47 4/27/94 4/27/94 2 324632 365 889 250580 365 687 74052 20348 4/27/94 4/27/94 1 128656 365 352 71060 365 195 57596 15849 5/2/94 5/2/94 2 324632 365 889 332112 365 910 -7480 -2050 5/2/94 5/3/94 1 135388 365 371 97988 365 268 37400 10251 5/3/94 5/3/94 1 86768 365 238 106216 365 291 -19448 -5352 5/3/94 5/9/94 2 421872 365 1156 309672 365 848 112200 30753 +54 #55 5/4/94 5/4/94 2 272272 365 746 255816 365 701 16456 4556 5/4/94 5/4/94 2 181764 365 498 162316 365 445 19448 5357 +58 5/5/94 5/5/94 1 94248 365 258 52360 365 143 41888 11559 5/6/94 5/8/94 2 509388 365 1396 113696 365 311 395692 108460 +61 #62 #63 #64 5/10/94 5/10/94 2 279752 365 766 219912 365 602 59840 16465 5/11/94 5/11/94 2 249084 365 682 104705 365 287 144379 39666 +67 +68 5/12/94 5/25/94 2 155584 365 426 140624 365 385 14960 4169 5/16/94 5/16/94 2 506396 365 1387 281248 365 771 225148 61770 5/16/94 5/16/94 2 311916 365 855 181016 365 496 130900 35971 5/17/94 5/17/94 2 261800 365 717 194480 365 533 67320 18472 5/17/94 5/17/94 1 243100 365 666 161568 365 443 81532 223




73 #74 5/18/94 5/18/94 2 323884 365 887 145860 365 400 178024 48875 5/18/94 5/18/94 2 132396 365 363 89012 365 244 43384 11976 5/18/94 5/18/94 2 377740 365 1035 324632 365 889 53108 14677 5/19/94 5/24/94 2 205700 365 564 102476 365 281 103224 28378 5/23/94 5/23/94 2 423368 365 1160 320144 365 877 103224 28379 +80 5/24/94 5/24/94 1 80036 365 219 65824 365 180 14212 3981 5/24/94 5/24/94 2 332112 365 910 231880 365 635 100232 27582 ?83 +84 5/25/94 5/25/94 1 182512 365 500 104720 365 287 77792 21385 5/25/94 5/25/94 2 397188 365 1088 309672 365 848 87516 24086 @87 #88 5/31/94 6/7/94 2 139128 365 381 167552 365 459 -28424 -7889 +90 6/1/94 6/1/94 2 650625 365 1783 559504 365 1533 91121 25091 6/1/94 6/2/94 2 388212 365 1064 301444 365 826 86768 23892 6/2/94 6/2/94 2 242352 365 664 207196 365 568 35156 9693 6/2/94 6/2/94 1 69564 365 191 59840 365 164 9724 2794 6/2/94 6/6/94 1 454036 365 1244 390456 365 1070 63580 17495 6/3/94 6/3/94 1 150348 365 412 170544 365 467 -20196 -5596 +97 #98 6/7/94 6/19/94 1 157828 365 432 136136 365 373 21692 5999 6/8/94 6/8/94 2 94248 365 258 59840 365 164 34408 94

100 6/8/94 6/8/94 3 191488 365 525 158576 365 434 32912 90101 6/8/94 6/28/94 1 89012 365 244 139876 365 383 -50864 -139102 6/9/94 6/24/94 2 283492 365 777 215424 365 590 68068 186103 6/9/94 6/15/94 2 169796 365 465 92004 365 252 77792 213104 6/11/94 6/15/94 2 674696 365 1848 493680 365 1353 181016 496105 6/14/94 6/14/94 2 282744 365 775 281016 365 770 1728 5106 6/14/94 6/14/94 2 436832 365 1197 301444 365 826 135388 371107 6/15/94 6/19/94 1 103972 365 285 97988 365 268 5984 16108 +



Pre-Evaluation Post-Evaluation Difference Pre-PostHouse Evaluation Dates Meter Total Water No. Average Total Water No. Average Total Water AverageNo. Site Visit Report Type Use Gals Days g/d Use Gals Days g/d Use Gals g/d109 *110 7/5/94 7/8/94 2 88264 365 242 153340 365 420 -65076 -178111 7/5/94 7/5/94 2 302192 365 828 195976 365 537 106216 291112 7/6/94 7/6/94 2 160072 365 439 109956 365 301 50116 137113 7/7/94 7/7/94 2 175032 365 480 142868 365 391 32164 88114 7/7/94 7/7/94 1 207196 365 568 67320 365 184 139876 383115 +116 7/11/94 7/11/94 2 155584 365 426 207944 365 570 -52360 -143117 +118 #119 7/13/94 7/13/94 1 123420 365 338 213928 365 586 -90508 -248120 7/13/94 7/13/94 2 86768 365 238 54604 365 150 32164 88121 +122 7/14/94 7/14/94 2 139876 365 383 106964 365 293 32912 90123 7/14/94 7/20/94 1 130900 365 359 176528 365 484 -45628 -125124 7/18/94 7/18/94 1 126412 365 346 74800 365 205 51612 141125 7/18/94 7/18/94 2 250580 365 687 172040 365 471 78540 215126 7/19/94 7/31/94 2 537064 365 1471 341836 365 937 195228 535127 7/19/94 8/1/94 1 168300 365 461 148104 365 406 20196 55128 +129 +130 7/20/94 7/20/94 1 207196 365 568 '148104 365 406 59092 162131 7/21/94 7/25/94 2 160072 365 439 106216 365 291 53856 148132 7/25/94 7/25/94 2 344828 365 945 215424 365 590 129404 355133 +134 #135 +136 #137 #138 7/29/94 8/1/94 1 112948 365 309 68816 365 189 44132 121139 ?140 +141 8/2/94 8/9/94 1 226644 365 621 115192 365 316 111452 305142 8/2/94 8/10/94 2 394944 365 1082 389708 365 1068 5236 14143 8/8/94 8/20/94 2 181016 365 496 136136 365 373 44880 123144 8/9/94 8/9/94 1 108460 365 297 89760 365 246 18700 51



Pre-Evaluation Post-Evaluation Difference Pre-PostHouse Evaluation Dates Meter Total Water No. Average Total Water No. Average Total Water AverageNo. Site Visit Report Type Use Gals Days g/d Use Gals Days g/d Use Gals g/d145 *146 8/9/94 8/9/94 1 314908 365 863 326128 365 894 -11220 -31147 8/9/94 8/11/94 2 253572 365 695 279004 365 764 -25432 -70148 8/11/94 8/11/94 2 213180 365 584 144364 365 396 68816 189149 8/11/94 8/11/94 2 166804 365 457 108460 365 297 58344 160150 8/12/94 8/18/94 1 265540 365 728 154088 365 422 111452 305151 8/12/94 8/16/94 2 495924 365 1359 301444 365 826 194480 533152 8/17/94 8/17/94 3 115940 365 318 187000 365 512 -71060 -195153 8/17/94 8/17/94 1 226644 365 621 97240 365 266 129404 355154 +155 8/18/94 8/20/94 1 211684 365 580 128656 365 352 83028 227156 8/18/94 8/18/94 1 192236 365 527 189244 365 518 2992 8157 8/18/94 8/20/94 2 443564 365 1215 204952 365 562 238612 654158 8/20/94 8/20/94 2 121924 365 334 139128 365 381 -17204 -47159 +160 8/27/94 8/27/94 1 130152 365 357 80784 365 221 49368 135

n 114 114 114 114 114 114 114 114 114 114 114Sum 28018352 41610 76763 20390323 41610 55864 7628029 20899Avg 5/31/94 6/2/94 245775 365 673 178862 365 490 66913 183Min 4/4/94 4/4/94 26928 365 74 25432 365 70 -131648 -361Max 8/27/94 8/27/94 721820 365 1978 559504 365 1533 429352 1176St.Dev 2/13/00 2/13/00 135938 0 372 94711 0 259 84514 232

# - Household omitted because no water use was recorded for two or more months.* - Duplicate household.+ - Household omitted because water account numbers changed sometime during the study period.? - Household omitted because water use data were not available for various reasons.@ - Household omitted because they voluntarily removed themselves from the program.


APPENDIX C, TABLE C-7B. DIFFERENCE BETWEEN PRE AND POST BI-MONTHLY TOTAL WATER USE FOR DAVIS ISLANDS CONTROLHOUSEHOLDS (March 1993 - October 1995).

Pre-Evaluation Post-Evaluation Difference Pre-PostHouse Meter Total Water No. Average Total Water No. Average Total Water AverageNo. Type Use Gals Days g/d Use Gals Days g/d Use Gals g/d

1.2 +

2.2 2 271300 365 743 258808 365 709 12492 343.2 +4.2 +5.2 2 247588 365 678 149600 365 410 97988 2686.2 1 89012 365 244 93500 365 256 -4488 -127.2 +8.2 +9.2 2 248336 365 680 183260 365 502 65076 178

10.2 #11.2 1 125664 365 344 77792 365 213 47872 13112.2 ?13.2 2 248336 365 680 181764 365 498 66572 18214.2 3 110704 365 303 72556 365 199 38148 10515.2 2 176528 365 484 157828 365 432 18700 5116.2 1 142120 365 389 92752 365 254 49368 13517.2 +18.2 1 152592 365 418 156332 365 428 -3740 -1019.2 +20.2 +21.2 ?22.2 #23.2 1 90508 365 248 290972 365 797 -200464 -54924.2 #25.2 #26.2 +27.2 2 130526 365 358 96492 365 264 34034 9328.2 2 109208 365 299 74052 365 203 35156 9629.2 2 199716 365 547 208692 365 572 -8976 -2530.2 #31.2 +32.2 2 299948 365 822 231027 365 633 68921 18933.2 1 143616 365 393 139726 365 383 3890 1134.2 #35.2 2 124916 365 342 112200 365 307 12716 3536.2 1 37400 365 102 110704 365 303 -73304 -201


APPENDIX C, TABLE C-7B. (CONTINUED).


37.2 1 23936 365 66 27676 365 76 -3740 -1038.2 1 186252 365 510 125664 365 344 60588 16639.2 +40.2 2 286484 365 785 167552 365 459 118932 32641.2 2 443564 365 1215 245344 365 672 198220 54342.2 2 339592 365 930 336600 365 922 2992 843.2 1 147356 365 404 120428 365 330 26928 7444.2 2 160072 365 439 116688 365 320 43384 11945.2 2 244596 365 670 164560 365 451 80036 21946.2 1 134640 365 369 83028 365 227 51612 14147.2 1 320144 365 877 266288 365 730 53856 14848.2 2 355300 365 973 419628 365 1150 -64328 -17649.2 1 70312 365 193 74800 365 205 -4488 -1250.2 ?51.2 +52.2 2 357544 365 980 365772 365 1002 -8228 -2353.2 1 50116 365 137 31416 365 86 18700 5154.2 1 74800 365 205 114444 365 314 -39644 -10955.2 2 87516 365 240 74800 365 205 12716 3556.2 1 189992 365 521 149600 365 410 40392 11157.2 2 195228 365 535 137632 365 377 57596 15858.2 2 92752 365 254 155584 365 426 -62832 -17259.2 2 273020 365 748 411400 365 1127 -138380 -37960.2 1 531828 365 1457 225126 365 617 306702 84061.2 2 108460 365 297 81532 365 223 26928 7462.2 2 341836 365 937 312507 365 856 29329 8063.2 2 365024 365 1000 169796 365 465 195228 53564.2 2 477224 365 1307 482460 365 1322 -5236 -1465.2 #66.2 #67.2 1 287232 365 787 339592 365 930 -52360 -14368.2 2 160820 365 441 145860 365 400 14960 4169.2 2 389708 365 1068 240856 365 660 148852 40870.2 2 556512 365 1525 161568 365 443 394944 108271.2 2 225896 365 619 275264 365 754 -49368 -13572.2 2 332860 365 912 306680 365 840 26180 72



Pre-Evaluation Post-Evaluation IDifference Pre-PostHouse Meter Total Water No. Average Total Water No. Average Total Water AverageNo. Type Use Gals Days g/d Use Gals Days g/d Use Gals g/d

73.2 1 121176 365 332 124916 365 342 -3740 -1074.2 #75.2 1 57596 365 158 97988 365 268 -40392 -11176.2 1 92004 365 252 98736 365 271 -6732 -1877.2 +78.2 1 56100 365 154 47872 365 131 8228 2379.2 2 186252 365 510 171292 365 469 14960 4180.2 2 418880 365 1148 227392 365 623 191488 52581.2 1 211684 365 580 74800 365 205 136884 37582.2 2 196724 365 539 142120 365 389 54604 15083.2 +84.2 +85.2 1 140624 365 385 120428 365 330 20196 5586.2 2 404668 365 1109 400180 365 1096 4488 1287.2 1 123420 365 338 99484 365 273 23936 6688.2 2 455532 365 1248 391952 365 1074 63580 17489.2 a90.2 +91.2 1 159324 365 437 121924 365 334 37400 10292.2 +93.2 1 80784 365 221 132396 365 363 -51612 -14194.2 1 96492 365 264 54604 365 150 41888 11595.2 2 406164 365 1113 229636 365 629 176528 48496.2 2 311168 365 853 194480 365 533 116688 32097.2 1 82280 365 225 89760 365 246 -7480 -2098.2 1 77792 365 213 64328 365 176 13464 3799.2 ?

100.2 2 124168 365 340 98736 365 271 25432 70101.2 2 255068 365 699 190740 365 523 64328 176102.2 2 314908 365 863 252076 365 691 62832 172103.2 +104.2 +105.2 2 191488 365 525 204952 365 562 -13464 -37106.2 +107.2 1 124168 365 340 418132 365 1146 -293964 -805108.2 1 281248 365 771 305184 365 836 -23936 -66




109.2 ?110.2 1 276012 365 756 190740 365 523 85272 234111.2 1 151096 365 414 204952 365 562 -53856 -148112.2 1 414392 365 1135 242352 365 664 172040 471113.2 #114.2 2 449548 365 1232 414392 365 1135 35156 96115.2 +116.2 1 185504 365 508 279004 365 764 -93500 -256117.2 1 209440 365 574 209440 365 574 0 0118.2 2 351560 365 963 271524 365 744 80036 219119.2 2 214676 365 588 190740 365 523 23936 66120.2 1 46376 365 127 17952 365 49 28424 78121.2 +122.2 2 97988 365 268 103224 365 283 -5236 -14123.2 2 49368 365 135 38148 365 105 11220 31124.2 +125.2 2 347820 365 953 256564 365 703 91256 250126.2 2 536316 365 1469 340340 365 932 195976 537127.2 1 77044 365 211 38148 365 105 38896 107128.2 #129.2 2 166056 365 455 205700 365 564 -39644 -109130.2 1 225148 365 617 168300 365 461 56848 156131.2 2 212432 365 582 181764 365 498 30668 84132.2 2 263296 365 721 152704 365 418 110592 303133.2 1 138380 365 379 100980 365 277 37400 102134.2 #135.2 1 117436 365 322 100980 365 277 16456 45136.2 2 572968 365 1570 320144 365 877 252824 693137.2 1 42636 365 117 27676 365 76 14960 41138.2 1 214676 365 588 169048 365 463 45628 125139.2 2 170544 365 467 153340 365 420 17204 47140.2 2 239360 365 656 150348 365 412 89012 244141.2 1 162316 365 445 58344 365 160 103972 285142.2 2 748000 365 2049 567732 365 1555 180268 494143.2 2 92752 365 254 111452 365 305 -18700 -51144.2 +




145.2 ?146.2 1 46376 365 127 41140 365 113 5236 14147.2 #148.2 2 566984 365 1553 383724 365 1051 183260 502149.2 #150.2 2 375496 365 1029 383724 365 1051 -8228 -23151.2 2 108460 365 297 287232 365 787 -178772 -490152.2 #153.2 1 118184 365 324 79288 365 217 38896 107154.2 2 458524 365 1256 129404 365 355 329120 902155.2 +156.2 1 130900 365 359 139876 365 383 -8976 -25157.2 2 195976 365 537 133892 365 367 62084 170158.2 2 241604 365 662 195228 365 535 46376 127159.2 2 206448 365 566 237864 365 652 -31416 -86160.2 +

n 112 112 112 112 112 112 112 112 112Sum 24950438 40880 68357 20649714 40880 56575 4300723 11783Avg 222772 365 610 184372 365 505 38399 105Min 23936 365 66 17952 365 49 -293964 -805Max 748000 365 2049 567732 365 1555 394944 1082St.Dev 142511 0 390 111068 0 304 93734 257

# - Household omitted because no water use was recorded for two or more months.* - Duplicate household.+ - Household omitted because water account numbers changed sometime during the study period.? - Household omitted because water use data were not available for various reasons.a - anomalous water usage


APPENDIX D

HOWARD F. CURREN WASTEWATER TREATMENT PLANTWEATHER STATION DATA

EXHIBIT D-1A: STATISTICAL ANALYSIS - DAILY RAINFALL (INCHES), CUMULATIVE PRE-VS. CUMULATIVE POST-EVALUATION PERIODS.t-Test: Two-Sample Assuming Equal Variances

Pre PostMean 0.105 0.165Variance 0.087 0.145Observations 518 518Pooled Variance 0.116Hypothesized Mean Difference 0df 1034.000t Stat -2.805P(T<=t) one-tail 0.003t Critical one-tail 1.646P(T<=t) two-tail 0.005t Critical two-tail 1.962

EXHIBIT D-1B: STATISTICAL ANALYSIS - NUMBER OF DAYS WITH SIGNIFICANT RAINFALL, CUMULATIVE PREVS. CUMULATIVE POST-EVALUATION PERIODS.

t-Test: Two-Sample Assuming Equal Variances

Pre PostMean 0.077 0.104Variance 0.071 0.094Observations 518 518Pooled Variance 0.082Hypothesized Mean Difference 0df 1034.000tStat -1.515P(T<=t) one-tail 0.065t Critical one-tail 1.646P(T<=t) two-tail 0.130t Critical two-tail 1.962

EXHIBITD.XLSPage 1 of 5

EXHIBIT D-2A: STATISTICAL ANALYSIS - DAILY RAINFALL (INCHES), HOUSE NO. 1 CUMULATIVE PRE-

VS. CUMULATIVE POST-EVALUATION PERIODS.t-Test: Two-Sample Assuming Equal Variances

Pre (March 1993-Feb 1994) Post (July 1994-June 1995)

Mean 0.095 0.136

Variance 0.079 0.106


Pooled Variance 0.092


df 728.000

t Stat -1.803

P(T<--t) one-tail 0.036

t Critical one-tail 1.647P(T<=t) two-tail 0.072

t Critical two-tail 1.963

EXHIBIT D-2B: STATISTICAL ANALYSIS - NUMBER OF DAYS WITH SIGNIFICANT RAINFALL, HOUSE NO. 1

CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATION PERIODS.t-Test: Two-Sample Assuming Equal Variances

Pre (March 1993-Feb 1994) Post (July 1994-June 1995)

Mean 0.074 0.099

Variance 0.069 0.089


Pooled Variance 0.079


df 728.000

t Stat -1.186

P(T<=t) one-tail 0.118

t Critical one-tail 1.647

P(T<-t) two-tail 0.236

t Critical two-tail 1.963


EXHIBIT D-3A: STATISTICAL ANALYSIS - DAILY RAINFALL (INCHES), HOUSE NO. 160 CUMULATIVE PRE-VS. CUMULATIVE POST-EVALUATION PERIODS.t-Test: Two-Sample Assuming Equal Variances

Pre (Aug 1993-July 1994) Post (Oct 1994-Sept 1995)Mean 0.114 0.126Variance 0.094 0.125Observations 365 365Pooled Variance 0.110Hypothesized Mean Difference 0df 728.000t Stat -0.484P(T<=t) one-tail 0.314t Critical one-tail 1.647P(T<-t) two-tail 0.628t Critical two-tail 1.963

EXHIBIT D-3B: STATISTICAL ANALYSIS - NUMBER OF DAYS WITH SIGNIFICANT RAINFALL, HOUSE NO. 160CUMULATIVE PRE- VS. CUMULATIVE POST-EVALUATION PERIODS.t-Test: Two-Sample Assuming Equal Variances

Pre (Aug 1993-July 1994) Post (Oct 1994-Sept 1995)Mean 0.079 0.077Variance 0.073 0.071Observations 365 365Pooled Variance 0.072Hypothesized Mean Difference 0df 728.000t Stat 0.138P(T<=t) one-tail 0.445t Critical one-tail 1.647P(T<-t) two-tail 0.890t Critical two-tail 1.963


EXHIBIT D-4A. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL ANDPARTICIPANT HOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATER USE.

Total Bi-Monthly Rainfall (in.) Avg Bi-Monthly Irrigation Water (g/h)Total Bi-Monthly Rainfall (in.) 1.000Avg Bi-Monthly Irrigation Water (g/h) 0.275 1.000

EXHIBIT D-4B. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL ANDPARTICIPANT HOUSEHOLDS' BI-MONTHLY POST-EVALUATION IRRIGATION WATER USE.

Total Bi-Monthly Rainfall (in.) Avg Bi-Monthly Irrigation Water (g/h)Total Bi-Monthly Rainfall (in.) 1.000Avg Bi-Monthly Irrigation Water (g/h) -0.049 1.000

EXHIBIT D-4C. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINDAYS AND PARTICIPANT HOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATER USE.

Total Bi-Monthly Sign. Rainfall Days Avg Bi-Monthly Irrigation Water (g/h)Total Bi-Monthly Sign. Rainfall Days 1.000Avg Bi-Monthly Irrigation Water (g/h) 0.397 1.000

EXHIBIT D-4D. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINDAYS AND PARTICIPANT HOUSEHOLDS' BI-MONTHLY POST-EVALUATION IRRIGATION WATER USE.



EXHIBIT D-5A. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL ANDCONTROL HOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATER USE.


EXHIBIT D-5B. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY RAINFALL ANDCONTROL HOUSEHOLDS' BI-MONTHLY POST-EVALUATION IRRIGATION WATER USE.


EXHIBIT D-5C. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINDAYS AND CONTROL HOUSEHOLDS' BI-MONTHLY PRE-EVALUATION IRRIGATION WATER USE.


EXHIBIT D-5D. STATISTICAL ANALYSES - CORRELATION BETWEEN TOTAL BI-MONTHLY SIGNIFICANT RAINDAYS AND CONTROL HOUSEHOLDS' BI-MONTHLY POST-EVALUATION IRRIGATION WATER USE.



APPENDIX D, TABLE D-1. TOTAL DAILY PRECIPITATION RECORDED AT THE HOWARD F. CURREN WASTEWATER TREATMENT PLANT.

Total Daily Precipitation (inches)1993 1994

DAY MAR I APR MAY JUN JULI AUGI SEP OCTI NOV I DEC JAN FEB MAR I APR I MAY JUN JUL AUG SEP OCT NOV DE

1 0.00 0.35 0.00 0.00 1.10 0.00 0.51 0.00 0.00 0.00 0.08 0.00 0.19 0.00 0.00 0.03 1.25 0.00 0.00 0.01 0.00 0.002 0.00 0.00 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.63 0.00 0.25 0.00 0.00 0.00 0.35 0.02 0.03 0.36 0.00 0.003 0.59 0.00 0.01 0.00 0.00 0.05 0.00 0.00 0.00 0.00 0.07 0.00 0.00 0.00 0.00 0.00 0.39 0.19 0.00 0.09 0.00 0.004 0.05 0.34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.08 0.00 0.11 0.00 0.00 0.025 0.00 0.34 0.00 0.00 0.00 0.00 0.16 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.82 0.31 0.00 0.00 0.00 0.006 0.00 0.00 0.09 0.00 0.24 0.00 2.37 0.00 0.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.76 0.08 0.00 0.00 0.00 0.007 0.01 0.00 0.00 0.00 0.00 0.00 0.19 0.00 0.00 0.00 0.00 - 0.00 0.00 0.00 0.00 1.92 0.00 1.13 0.22 0.00 0.00 0.008 0.00 0.00 0.00 0.00 0.00 0.00 0.24 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20 0.00 0.47 0.00 0.00 0.00 0.009 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.55 0.05 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.30 0.00 0.00 0.00

10 0.00 0.00 0.00 0.00 0.65 0.00 0.15 0.00 0.00 0.35 0.00 0.00 0.00 0.00 0.00 0.00 0.05 1.88 1.06 0.01 0.00 0.0011 0.00 0.00 0.00 0.00 0.01 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.32 0.03 0.30 0.59 0.00 1.0412 0.17 0.00 0.00 0.06 0.00 0.07 0.84 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.44 0.00 0.00 0.01 0.00 0.00 0.0013 0.11 0.00 0.16 0.05 0.00 0.00 0.91 0.00 0.00 0.00 0.97 0.00 0.00 0.00 0.00 0.01 0.00 0.24 0.06 0.23 0.00 0.0014 0.00 0.00 0.01 0.00 0.00 0.67 1.47 0.00 0.00 0.18 0.03 0.00 0.00 0.00 0.00 0.48 0.09 0.05 0.43 0.00 0.01 0.0015 0.00 1.26 0.00 0.00 1.67 1.07 0.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.49 0.01 0.01 0.78 0.00 0.09 0.0216 0.00 0.00 0.00 0.00 0.00 0.18 0.04 0.23 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.06 0.03 0.24 0.81 0.01 0.04 0.0017 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.95 0.00 0.00 0.00 0.00 0.42 0.03 0.00 0.00 0.00 0.00 0.0018 0.04 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.16 0.03 0.00 0.08 0.00 0.15 0.37 0.00 0.08 0.00 0.00 0.0019 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.20 0.00 1.84 0.00 0.00 0.0020 0.03 0.00 0.00 0.94 0.00 0.00 0.00 0.00 0.04 0.00 0.00 0.00 0.00 0.43 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.2121 0.04 0.00 0.00 0.00 0.86 0.04 0.94 0.00 0.00 0.15 0.00 0.05 0.00 0.05 0.00 0.22 0.01 0.00 0.00 0.00 0.00 0.5222 0.00 0.00 0.00 0.13 0.01 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.06 0.00 0.00 0.00 0.3023 0.00 0.00 0.00 0.61 0.00 0.00 0.00 0.00 0.00 0.21 0.00 0.00 0.00 1.48 0.00 0.00 0.00 0.98 0.00 0.12 0.00 0.0024 0.04 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.52 0.00 0.39 0.00 0.78 0.00 0.00 0.75 0.44 1.21 0.00 0.00 0.0025 0.01 0.00 0.00 0.21 0.02 1.64 0.00 0.00 0.00 0.11 0.00 0.01 0.00 0.00 0.00 0.00 0.14 0.53 0.05 0.00 0.00 0.0026 0.01 0.00 0.00 0.00 0.00 0.70 0.00 0.24 0.00 0.00 0.02 0.00 0.00 0.57 0.00 0.00 0.56 1.03 0.96 1.09 0.00 0.0027 0.00 0.01 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.26 0.00 0.14 0.82 0.00 0.00 0.0628 0.00 0.00 0.65 0.0.0 0.00 0.29 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.26 1.07 0.00 0.00 0.00 0.0029 0.00 0.00 0.04 0.01 0.00 0.30 0.00 0.00 0.00 0.00 0.14 0.26 0.00 0.40 0.85 0.58 0.30 0.00 0.23 0.00 0.0030 0.00 0.00 0.66 0.07 0.00 0.46 0.00 0.96 0.00 0.00 0.45 0.00 0.00 0.00 0.01 0.77 0.00 0.01 0.28 0.00 0.0031 1.31 0.02 0.00 0.01 0.26 0.00 0.01 0.00 0.02 __ 0.00 0.00 __0.00 0.00

n 31 30 31 30 31 31 30 31 30 31 31 28 31 30 31 30 31 31 30 31 30 31sum 2.42 2.33 1.64 2.11 4.60 5.58 7.98 2.28 0.20 1.52 3.53 0.49 0.70 3.43 0.42 7.54 7.82 9.20 9.09 3.02 0.14 2.17avg 0.08 0.08 0.05 0.07 0.15 0.18 0.27 0.07 0.01 0.05 0.11 0.02 0.02 0.11 0.01 0.25 0.25 0.30 0.30 0.10 0.00 0.07min 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00max 1.31 1.26 0.66 0.94 1.67 1.64 2.37 0.96 0.11 0.52 0.97 0.39 0.26 1.48 0.40 2.06 1.25 1.88 1.84 1.09 0.09 1.04stdev 0.25 0.25 0.16 0.20 0.39 0.37 0.54 0.20 0.02 0.12 0.26 0.07 0.07 0.32 0.07 0.52 0.33 0.46 0.47 0.23 0.02 0.21

Reference: City of Tampa Howard F. Curren Advanced Wastewater Treatment Plant (Latitude 27 55' 23" Longitude 82 26' 25").

TABLED-1.XLSPage 1 of 2

APPENDIX D, TABLE D-1. (CONTINUED)

1995DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT1 0.00 0.07 0.04 0.05 0.00 0.07 0.00 0.31 0.08 0.002 0.00 0.00 0.00 0.00 0.00 1.72 0.00 2.22 0.00 0.003 0.00 0.00 0.00 0.00 0.00 0.51 0.00 0.58 0.00 0.714 0.20 0.14 0.00 0.00 0.00 0.78 0.00 0.00 0.09 0.195 0.00 0.00 0.00 0.97 0.00 0.31 0.00 0.00 0.28 1.396 0,00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.01 0.487 0.25 0.21 0.00 0.00 0.23 0.00 0.00 0.00 0.24 0.018 0.00 0.00 0.76 0.06 0.00 0.00 0.00 0.00 0.00 0.299 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.01 0.2010 0.00 0.00 0.03 0.00 0.00 0.40 0.00 0.01 0.14 0.2211 0.00 0.00 0.00 0.00 0.00 0.36 0.20 0.32 0.03 0.0012 0.00 0.29 0.00 0.00 0.00 0.31 0.40 1.82 0.22 0.4013 0.00 0.20 0.02 0.00 0.00 0.05 0.56 0.00 0.00 0.0014 1.51 0.00 0.00 0.00 0.00 0.00 0.39 0.00 0.00 0.3715 0.22 0.00 0.17 0.00 0.00 0.00 0.20 0.04 0.00 0.0016 0.00 0.00 0.17 0.00 0.00 0.00 0.00 0.00 0.00 0.0017 0.00 0.00 0.03 0.00 0.00 0.00 0.95 0.00 0.49 0.0018 0.00 0.00 0.00 0.00 0.00 0.00 0.86 0.00 1.03 0.9819 0.00 0.00 0.00 0.00 0.02 0.00 0.82 0.00 0.05 0.0020 0.00 0.51 0.00 0.00 0.66 0.00 0.21 0.00 0.00 0.0021 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0022 0.00 0.00 0.00 0.00 0.00 0.21 0.00 0.10 0.00 0.0023 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.00 0.0024 0.00 0.00 0.00 0.22 0.00 2.19 0.10 0.20 0.11 0.0025 0.00 0.00 0.00 0.04 0.00 1.71 0.44 3.23 0.00 0.0226 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.42 0.00 0.0827 0.00 0.00 0.00 0.19 0.00 0.00 0.26 0.11 0.31 0.0028 0.00 0.00 0.00 0.18 0.66 0.00 0.28 1.19 0.01 0.0229 0.02 0.00 0.00 0.00 0.00 1.20 0.08 0.00 0.0030 0.44 0.01 0.00 0.00 0.05 0.46 0.00 0.00 0.0031 0.00 0.79 0.00 0.00 0.00 0.46

n 31 28 31 30 31 30 31 31 30 31sum 2.64 1.42 2.02 1.73 1.57 8.67 7.33 12.01 3.10 5.82avg 0.09 0.05 0.07 0.06 0.05 0.29 0.24 0.39 0.10 0.19min 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00max 1.51 0.51 0.79 0.97 0.66 2.19 1.20 3.23 1.03 1.39stdev 0.28 0.12 0.19 0.18 0.17 0.57 0.33 0.78 0.21 0.33

Reference: City of Tampa Howard F. Curren Advanced Wastewater Treatment Plant (Latitude 27 55' 23" Longitude 82 26' 25").

TABLED1.XLSPage 2 of 2

an evaluation of davis islands landscape irrigation...

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