ASSESSMENT OF AYDUGHMUSH WATER QUALITY BY NATIONAL SANITATION FOUNDATION WATER QUALITY (NSFWQI) AND LIOU POLLUTION INDICES

Water Quality Indices are one of the methods can be used in water quality
management as a useful tool in decision making, so this study carried out on evaluating the quality of
the Aydughmush river by National Sanitation Foundation Water quality (NSFWQI) and River
Pollution Indices (Liou).
Materials & 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 one year (2010 to 2011). Sampling points were
selected on the basis of their importance. The National Sanitation Foundation Water quality
(NSFWQI) and River Pollution Indices (Liou) were used for Aydughmush River water quality
assessment.
Results: Based on NSFWQI and Liou indices, water quality was found within Moderate category in
most of studied stations.
Conclusion: Despite difference in used parameters and calculation method in the NSFWQI and Liou
indices, the results of both methods overlap for water quality assessment.