QUALITY ASSESSMENT OF DRINKING WATER BY USING SOME ENVIRONMENT INDEX IN MISAN PROVINCENeran A. AL Naqeeb and Salih Hassan Jazza
The aim of the study to the assessment of drinking water by two different WQI models, Arithmetic Weighted Water Quality Index (AW-WQI), and Overall Index of Pollution (OIP-WQI). Water samples were collected from ten sampling stations during 2017-2018 and 9 physicochemical parameters were analyzed: hydrogen ion concentration (pH), Turbidity NTU, Total Suspended Solids TSS, Total Dissolved Solids TDS, Total Hardness, Chloride mg. L-1, Sulphate mg. L-1, Reactive Nitrate mg, Reactive Phosphate. The study showed the water quality is very poor in Station 1 and all the Stations. which was classified as unsuitable for drinking because of increasing the TDS, TSS, SO4, PO4 and total hardness for these stations as a result. While Overall Index of Pollution (OIP-WQI) The results revealed that Stations 1,4,8,9,10 were polluted, and Slightly polluted in station 2,3,5,6,7.