Aquatic ecosystems are particularly vulnerable to environmental change and many are, at present, severely degraded. The availability of good quality water is an indispensable feature for preventing disease and improving quality of life. The physicochemical properties will also help in the identification of sources of pollution, for conducting further investigations on the ecobiological impacts and also for initiating necessary steps for remedial actions in case of polluted water bodies. Therefore, the nature and health of any aquatic community are an expression of quality of the water. The present study has been undertaken to evaluate physico-chemical parameters (pH, alkalinity, dissolved oxygen, free carbon dioxide, sulphate content, chloride content and phosphate content) in 5 water bodies in and around Ranchi – Patratu Dam, Kanke dam, Dhruwa dam, Ranchi Lake, Line-tank Lake.