The water bodies, lakes and estuaries are continuously subject to a dynamic state of change with respect to their geological age and geochemical characteristics. The physico-chemical characteristics of the aqueous phase have direct influence on the types and distribution of aquatic biota as well as on the health of the human being. With this pace the present study is carried out for determination of indicator parameters, in the ground water bodies of Ahmednagar city. To study extent of pollution in water and its quality; Water Quality Index (WQI) is calculated for its physic-chemical analysis. Water in Ahmednagar City is found to be safe as all samples have shown Water Quality Index less than 50.