Abstract: Groundwater is one of the major resources of the drinking water in Byadagi taluk (India.). In this study 11 sampling station were selected for the investigations on 11 chemical parameters. The work was carried out during different months of the premonsoon, monsoon and post-monsoon seasons in June 2009 to June 2010. pH values recorded were alkaline in nature. Correlation between EC, TDS, Total hardness and related results clearly indicated the degree of acceptance of results documented. Water samples were found to be rich with phosphorus. High sodium content was noticed in all the stations. Results of principal component analysis evinced that all the parameters equally and significantly contribute to groundwater quality variations. Significant variation of physico-chemical parameters of surface water were observed; various physico-chemical parameters for the water samples were within highest desirable limit (HDL) prescribed by WHO for drinking purposes for all seasons except for pH in summer, total alkalinity and Fe contents in spring, autumn and winter; total dissolved solids in winter, turbidity in all seasons.