The present study aimed at the assessment of water quality Index (WQI) of river Tawi, Jammu (J&K), in order to ascertain its portability for public consumption, recreation and other purposes. In this study, Water Quality Index was determined on the basis of various physicochemical parameters like pH, Electrical conductivity, Total dissolved solids, Total alkalinity, Total hardness, Dissolved oxygen, Chloride, Calcium and Magnesium. The WQI results thus obtained for different seasons viz. monsoon, summer and winter fall in the range 64.5-84.6, 76.7-89.8 and 74.9-85.5 which reveals the water status as poor to very poor according to Weight Arithmetic Water Quality Index method. Thus the untreated river water can be used only for irrigation and industrial needs.
