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03 November 0903 November 09
NRW ProgramNRW ProgramNegeri Sembilan ExperiencedNegeri Sembilan Experienced
(Hatimuda Sendirian Berhad)(Hatimuda Sendirian Berhad)031109031109
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Non Revenue Water is The Difference Between Non Revenue Water is The Difference Between Volume of System Input and Billed Authorized ConsumptionVolume of System Input and Billed Authorized Consumption
May 4, 2023May 4, 2023
Billed metered consumption78.9%
Billed unmetered consumption0.0%
Unbilled Metered consumption0.0%
Unbilled unmetered consumption1.0%
Unauthorized consumption1.0%
Meter inaccuracies3.7%
20.1%
15.4%
21.1%
Real losses
100.0%
Water losses
Apparent losses
4.7%
1.0%
Revenue Water
78.9%
Non Revenue Water
Leakage: Transmission/distribution 5.0 %
Leakage: Reservoir overflow 1.4 %
Leakage: Service pipes 9.0 %
System input
Authorized consumption
Billed Authorized consumption
78.9%
79.9% Unbilled Authorized consumption
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May 4, 2023May 4, 2023
- Malaysian Context -- Malaysian Context -Why High NRW Levels?Why High NRW Levels?
• Not Difficult - Boring Subject (Never Mind Attitude)• No Complains – Consumers Have Sufficient Supply• No Incentives and Recognition• Money Spend Not for the Root of the Problem (Rehabilitation
Projects Only)• Insufficient Allocation• Unsustainable and non Committal (No Follow Through After Project)• Ineffective Monitoring System• False NRW Calculations and Data Interpretations• Non Committal on Commercial Losses• MOST IMPORTANT: Repetitions on Wrong Doings During
New Water Supply Project Implementations and Substandard Materials and Poor Quality Workmanship
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Key Conditions for Sustainable Key Conditions for Sustainable NRW ProgramNRW Program
• Pressure to develop NRW reduction strategy to show effectiveness in managing water loss management.
• Commitment from key decision maker within utility.
• Adequate technical understanding• Organization and Information System• (requires long term NRW strategy to reach an economic level and
constantly monitored to maintained the level)
May 4, 2023May 4, 2023
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May 4, 2023May 4, 2023
KEY BENEFITS KEY BENEFITS OF NRW PROGRAMOF NRW PROGRAM
• Improving management of water supply distribution system
• Improving Customer Services & Revenue Collection• Improving asset management system for
maintaining, operating and upgrading the network components
• Reduce Operational Cost & Unscheduled Interruption
• Implementation of Water Audit• Development of long term pipe replacement
programme• Deferment in Capital Expenditure
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May 4, 2023May 4, 2023
What we cant measure we cant manage
Requires
Through
A diagnostic approach followed by the implementations of practicable and
achievable solution to Reduce and Sustain NRW levels.
HolisticNRW
NRW!i. Not Technically Difficult but ii. Complexii. Reflects Efficiencyiii. Effects FinancialIv. Requires Commitment
Because
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May 4, 2023May 4, 2023
Holistic NRWHolistic NRWDifference Between Actual Volume of System Input
and Detailed Volume Measurement of Billed Authorized Consumption
i. Detailed Measurement & Monitoring of High Quality Dataii. Use of Latest Technology in IT & Communication
iii. Traditional NRW Approachiv. MNF Monitoring by SCADA as tool to prioritize ALC
Through
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May 4, 2023May 4, 2023
Negeri SembilanNegeri Sembilan• 6646 kilometer persegi• Penduduk 925,000• Anggaran Panjang Paip : 6500km• 330,000 meter pengguna - 12 % pengguna komersial- 38% penggunaan• 25 Loji Rawatan Air - Kapasiti Rekabentuk : 730 mld - ( Dari 0.1 mld hingga 30.4 mld)• 468 Kolam dan Tangki Air simpanan• Anggaran NRW 2005= 53%
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May 4, 2023May 4, 2023
Perbandingan % NRW Perbandingan % NRW
CALCULATED NRW 2005
0
10
20
30
40
50
60
70
WATER SUPPLY ENTITIES
NRW
IN %
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May 4, 2023May 4, 2023
Negeri SembilanNegeri SembilanWater Supply DemandWater Supply Demand
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May 4, 2023May 4, 2023
Road Map NRW Negeri Sembilan
4540
3226 24
20 18 17 16 16 15
53
2010 Target
2020 Target
AmpanganSeremban
Port Dickson
TampinRembauJelebu
Kuala PilahJempol
0
10
20
30
40
50
60
70
80
90
100
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Year
% N
RW
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May 4, 2023May 4, 2023
NRW Negeri Sembilan Pay Back Period
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018Year
Mill
ion
(RM
)
Accumulated Expenditure (RM) Accumulated Savings (RM)
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Negeri SembilanNegeri SembilanNRW ProjectsNRW Projects
1. Holistic NRW Seremban• RM 14 million• Completed Feb. 2008 2. Holistic NRW Seremban Service & Maintenance Contract• RM 10.3 million• April 2009 – Mac 2011
3. Holistic NRW Kuala Pilah / Jempol• RM 25 million• Feb 2008 – Feb 2010
4. Holistic NRW Port Dickson• RM 15.3 million• April 2009 – Mac 2011
1. Seremban NRW Program• RM 43 million• July 2007 – June 2010
May 4, 2023May 4, 2023
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May 4, 2023May 4, 2023
PROJEK HOLISTIK NRWPROJEK HOLISTIK NRWSeremban Seremban
Kawasan Senawang meliputi:Mukim Ampangan dan sebahagian
Mukim Bandar, Rasah dan Rantau
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May 4, 2023May 4, 2023
SEREMBAN HOLISTIC NRW PILOT PROGRAM SEREMBAN HOLISTIC NRW PILOT PROGRAM (Project Overview)(Project Overview)
Project Cost Original at RM 10.5 million (USD 3.0m) for 40,000 acc. Danish Govt. DANIDA Grant of RM 1.2 m Budget Addition of RM 4.5 m for 62,000 acc.
Payment Terms RM 2.5m Tied to NRW Reduction Balance Based on Bill of Quantities Leak Repairs at Actual Cost plus Management Fee 5% Performance Bond – Penalty if 15% NRW Reduction not
achieved
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May 4, 2023May 4, 2023
Seremban Holistic NRW Pilot ProjectSeremban Holistic NRW Pilot ProjectGuarantees15% NRW ReductionGuarantees15% NRW Reduction
Source of supply 2 No 900 mm
58.5 km.sq0.8%
748.1 km pipes11%
64,385 meteredConsumers
19%
55 DMZ’s40 DMZ’s Modeled
11 Fixed Time & 9 Time Modulated PMA’s
3456 leaks detectedAnd repaired
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May 4, 2023May 4, 2023
SEREMBAN SEREMBAN HOLISTIC NRW SCOPE OF WORKSHOLISTIC NRW SCOPE OF WORKS
1. GIS PIPE REGISTRATION2. DESIGN & ESTABLISHMENT OF DMZ3. BASELINE NRW CALCULATIONS & SETTING TARGETS4. PRESSURE MANAGEMENT CONTROL5. SCADA & AMR6. LEAK DETECTION / RESERVOIR OVERFLOW & REPAIRS7. CONSUMER METER MANAGEMENT & REPLACEMENT8. ESTABLISHMENT OF CONTINUOUS NRW MONITORING
MECHANISM.9. ESTABLIMENT OF PIPE REPLACEMENT PROGRAM
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May 4, 2023May 4, 2023
1. GIS Pipe Registration1. GIS Pipe Registration
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May 4, 2023May 4, 2023
Cadastral Map / Satelite ImageCadastral Map / Satelite Image
Cadastral Map(UPI of lots used as ID )
Satellite Image(as back ground map for reference)
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May 4, 2023May 4, 2023
Verification & Digitizing of PipelinesVerification & Digitizing of Pipelines
Black: Pilot AreaRed: HardcopyGreen: AutoCADBlue: Field
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May 4, 2023May 4, 2023
PIPE REGISTRATIONPIPE REGISTRATION
No. Pipe Material (KM) Softcopy (KM) Field Verification (KM) Hardcopy (KM)
Total Digitize Pipe (KM)
1 AC 66.654 310.796 66.654 444.105
2 HDPE 7.196 22.143 7.196 36.535
3 MS 82.467 90.476 82.467 255.411
4 UPVC 0.000 0.815 9.730 10.545
5 CI 0.265 0.000 0.265 0.529
6 DI 0.000 0.000 0.000 0.000
7 GI 0.000 0.972 0.000 0.972
8 SI 0.000 0.000 0.000 0.000
9 No Data/Others 0.000 0.000 0.000 0.000
Total 156.583 425.203 166.313 748.098
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May 4, 2023May 4, 2023
Satelite ImageSatelite Image
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May 4, 2023May 4, 2023
Satelite Image Overlay Satelite Image Overlay With Cadastral MapWith Cadastral Map
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May 4, 2023May 4, 2023
Digitizing of Pipelines Digitizing of Pipelines & Atributes& Atributes
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May 4, 2023May 4, 2023
Geo-coding (Geo referencing) of Geo-coding (Geo referencing) of Consumer AccountsConsumer Accounts
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May 4, 2023May 4, 2023
2. DMA Design2. DMA Design
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May 4, 2023May 4, 2023
External pressure loggers• No reaction at the pressure, which
means they are supplied from another source
Internal pressure loggers• Pressure drop at the same time at
at P1 and P2
Zero Pressure Test (ZPT) Zero Pressure Test (ZPT)
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May 4, 2023May 4, 2023
Model Building and Calibration for DMZModel Building and Calibration for DMZ
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3. BASELINE CALCULATION3. BASELINE CALCULATION
• Top Down NRW measurement based on actual volume of system input and detailed volume measurement of billed authorized consumption.
• For the purpose of establishing the present NRW level in order to put up an agreed NRW reduction target.
May 4, 2023May 4, 2023
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4. Pressure Management4. Pressure ManagementReal Loss Management Strategy for Real Loss Management Strategy for
Background LossesBackground Losses
May 4, 2023May 4, 2023
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May 4, 2023May 4, 2023
Box HQ
5. 5. SCADA – (web hosting)SCADA – (web hosting)-For reduction of time & cost of operation and real time -For reduction of time & cost of operation and real time
data availability-data availability-
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May 4, 2023May 4, 2023
SCADA & Data HostingSCADA & Data HostingISOIL
Flow MetersABB
Flow Meters
Email via GPRS SMS
Universal Data Processor
Data Manager
SCADA Database Data Cleaning
SCADA Web Hosting
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May 4, 2023May 4, 2023
MNF MonitoringMNF Monitoring -Prioritizing and Localizing- -Prioritizing and Localizing-
High MNF detected
MNF back to normal
Repair worksAbnormal flow
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6. Leak Detection & 6. Leak Detection & RepairsRepairs(Find and Fix)(Find and Fix)
1.ALC1. Monitoring2. Prioritizing3. Localizing4. Locating5. Pinpointing2. Speed & Quality
Repair3.Good & Quality Material1. Monitoring
May 4, 2023May 4, 2023
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May 4, 2023May 4, 2023
Registration of Leak Registration of Leak LocationsLocations
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RESERVOIR OVERFLOWRESERVOIR OVERFLOW
• Contributes a significant % to overall NRW due to:– Over pumping (pumping fed reservoirs)– Faulty altitude / float valves (gravity fed
reservoirs)
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Overcome By:Overcome By:1.Control of pumping operations2.Maintenance of altitude valves or float valves(but scheduled valve maintenance inefficient and ineffective i.e.. too early or too late.)3.Reliable and cost effective monitoring system with minimal maintenance
Battery powered devicesGPRS & SMS communicationWeb-based monitoring with SMS alert
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May 4, 2023May 4, 2023
7. Consumer Meter Management7. Consumer Meter Management• Customer Meter Inaccuracy1. Meter changing program2. More accurate meters at low flow3. Installation procedure
• Unauthorized Consumption1. Enforcements
• Meter Reading Errors1. Minimize human errors2. AMR
• Data Handling and Accounting Errors1. Enhancement of CIBS softwares and hardwares
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May 4, 2023May 4, 2023
8. NRW Reduction & Monitoring8. NRW Reduction & Monitoring
Email Alarm
Fast Detection
Fast Repair
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May 4, 2023May 4, 2023
Seremban Inflow & Metered Seremban Inflow & Metered ConsumptionConsumption
Inflow and billed consumption
111599112258113811
112524114604
113230112824110297
108424106502
102981101322
102789101321
9481992402 92831
9034892192
94646
67814 6864171611 71748
7368075292
72194 71852 7164974238
70043 6931870993 71822 71797 71268 72033 71277
7332474688
60000
70000
80000
90000
100000
110000
120000
Month
m3/
day
'
Inflow Billed Consumption
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May 4, 2023May 4, 2023Hue water distribution management Hue water distribution management
trainingtraining
Seremban Billed Consumption Seremban Billed Consumption (m3/day)(m3/day)
Billed consumption [m3/day]
67814 6864171611 71748
73680 7529272194 71852 71649
7423870043 69318 70993 71822 71797 71268 72033 71277
73324 74688
2476326623
29060 28824 29688 3132428249 28077 27625
3032128122 26907 27174 27137
29384 27681 26752 26022 27794 28451
43051 42018 42551 42924 43992 43968 43945 43775 44024 4391741921 42411 43819 44685
42413 43587 45281 45255 45530 46237
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
Month
m3/d
ay
'
Billed Consumption Billed Cons. Ind [m3/day] Billed Cons. dom [m3/day]
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May 4, 2023May 4, 2023
Seremban NRW % DevelopmentSeremban NRW % Development
Seremban NRW % Development
39,2
37,136,2 35,7
33,5
36,034,9
33,9
30,3
32,0 31,630,9
29,1
24,322,9 22,4
21,120,5
21,1
38,9
15
20
25
30
35
40
45
Month
NRW
%
'
NRW %
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May 4, 2023May 4, 2023
Monthly Water Saved With October 2006 Monthly Water Saved With October 2006 as Baseline Referenceas Baseline Reference
Water saved using October as reference [m3]
0-19770
-68572-28675
-87145-50561 -36750
40362
95250
158007
267158
308310273119
308340
520180
595107
544272
658783
582206
525543
-300000
-200000
-100000
0
100000
200000
300000
400000
500000
600000
700000
Month
Wat
er sa
ved
[m3]
'
m3 saved
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May 4, 2023May 4, 2023
Accumulated Water Saved during Accumulated Water Saved during Contract PeriodContract Period
Water saved [m3] accumulated
0 -19770 -88342-117017-204162-254723-291473-251111-1558612146
269304
577614850733
1159073
1679253
2274360
2818632
3477415
4059621
4585164
-1000000
-500000
0
500000
1000000
1500000
2000000
2500000
3000000
3500000
4000000
4500000
5000000
Month
Wat
er s
aved
[m3]
'
m3 saved accumulated
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May 4, 2023May 4, 2023
Payback Period Payback Period @ RM1.18 / cu.m@ RM1.18 / cu.m
• RM saved during project period = RM3,325,985• RM saved per month after project = RM 642,240/month• Repair work and monitoring cost per month = RM 370,000/month• Project Cost = RM 14,000,000.00• Payback Period= (14,000,000 – 3,325,985) / (642,240-
370,000)
= 39.2 months
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May 4, 2023May 4, 2023
Water Balance ( % )Water Balance ( % )
Billed metered consumption78.9%
Billed unmetered consumption0.0%
Unbilled Metered consumption0.0%
Unbilled unmetered consumption1.0%
Unauthorized consumption1.0%
Meter inaccuracies3.7%
20.1%
15.4%
21.1%
Real losses
100.0%
Water losses
Apparent losses
4.7%
1.0%
Revenue Water
78.9%
Non Revenue Water
Leakage: Transmission/distribution 5.0 %
Leakage: Reservoir overflow 1.4 %
Leakage: Service pipes 9.0 %
System input
Authorized consumption
Billed Authorized consumption
78.9%
79.9% Unbilled Authorized consumption
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ILI ComparisonILI Comparison
2 2 3 3 4 6
18
9 9
16 1721
2631
79
0
10
20
30
40
50
60
70
80
ILI
Infra Structure Leakage
Cyprus Australia France Germany JapanSeremban Costa Rica Penang Terengganu SelangorLabuan Negeri Sembilan Malaysia Indonesia Vietnam
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Cadangan Masa Panjang NRWCadangan Masa Panjang NRWNegeri Sembilan.Negeri Sembilan.
• Pengawalan berterusan zon kawalan selepas projek siap dilaksanakan.
• Meningkatkan jumlah & kecekapan kakitangan bahagian NRW SAINS
• Meningkatkan sistem aduan dan pembaikan kebocoran.
• Melaksanakan program NRW untuk seluruh Negeri Sembilan bagi mencapai NRW 15% menjelang tahun 2020 seperti yang disasar oleh Kerajaan Pusat.
• Penekanan kapada kualiti kerja dan bahan didalam projek projek bekalan air baru
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TERIMATERIMAKASIHKASIH