The water quality has become a major concern due to over increasing human development activities that over exploits and pollute the water resources. Present investigations were carried out on the Physicochemical nature of Son river, Sidhi (M.P.). Many of the parameters were found below the permissible limits for drinking water as suggested by WHO (1997) ^[17]. A total of 09 parameters were analyzed and their seasonal variations in the year 2015-2016 were discussed.