evaluationofaydughmushdamreservoirwaterqualitybynational...
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Evaluation of Aydughmush Dam ReservoirWater Quality by National
Sanitation Foundation Water Quality Index (NSF-WQI)
and Water Quality Parameter Changes
Shokuhi R.1, *Hosinzadeh E.2, Roshanaei G.1, Alipour M.3, Hoseinzadeh S.4
1Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan,
Iran2Department of Environmental Health Engineering, School of Public Health, Khoram abad University of Medical Sciences,
Lorestan, Iran3Department of Biostatistics, School of Public Health, Hamadan University of Medical SciencesHamadan, Iran
4Department of Civil engineering, School of Engineering, Maragheh University, East Azerbaijan, Iran
Received; 23 July 2011 Accepted; 22 October 2011
ABSTRACT
Background and Objectives: Aydughmush dam was built on Aydughmush River at !"km in
southwest of Mianeh City. The dam is multipurpose and its main aims are the spring floods control,
supplying potable water for villages and providing irrigation water. Different pollutants which
probably discharge to the river finally enter to the dam reservoir so; this study focuses on evaluating
the quality of the dam reservoir.
Materials and Methods: In this cross sectional study standard field parameters including dissolved
oxygen, temperature, Biochemical and chemical oxygen Demand, Most Probable Number of
Coliforms, Fecal Coliform, Turbidity, Total Dissolved Solids, Total Solids, pH, conductivity and
others were measured at eight different stations during the spring and summer in 2010. Sampling
points were selected on the basis of their importance.Water quality index was calculated using water
quality index calculator given by National Sanitation Foundation (NSF) information system.
Results: The highest value of WQI of the samples was 84.89 in A3 station in July while the lowest
value was 67.96 in A2 station in May. The lower value of WQI has been found mainly due to the
slightly lower value of DO in the dam reservoir water. Most of the water samples were found within
Good category of National Sanitation Foundation Water Quality Index (NSF-WQI). Comparison
of the measured parameters based on the sampling stations and various months by variance and
t-student analysis showed a significant relationship for some parameters(P<0.05). Nutrient budget
determination indicates that the concentration of phosphate, nitrite, nitrate and ammonia at inlet are
higher than outlet of the dam reservoir.
Conclusion: The calculated (WQI) showed good water quality. Based on the results of NSFQWI
calculations, the dam reservoir water quality is suitable for various purposes
Keywords:Water Quality Index, NSFWQI, Dam Reservoir, Water Quality
Iran. J. Health & Environ., 2012, Vol. 4, No. 4
*Corresponding Author: [email protected]
Tel:+98 811 83 800, Fax:
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