Abstract: The quality and quantity of drinking water have received considerable attention recently. Moreover in India, almost 70% of surface and underground water reservoirs have been contaminated by biological, inorganic and organic pollutants. Hence, the present study was conducted to characterize the physiochemical parameters (nature) of ground water in municipal areas of Purnea district town by taking water samples from five selected points(station). The assessed parameters in potable water as prescribed by different agencies (viz. – BIS ,ISI ,WHO & etc) .The Study reveals that the domestic sewage discharge and improper location of bore wells with respect to the septic tank and sewer pipes will increase the potential threat to the potable water quality.