The present study was carried out to assess the ground water quality of various location of Saltaua Gopalpur block of Basti district during June-July 2013. Total 10 water samples were collected from hand pumps at different locations in and around Saltaua Gopalpur block. The water samples were analyzed for their physico-chemical characteristics, viz .pH, turbidity, chloride, total hardness, fluoride, nitrate, Iron and free chlorine. On comparing the results against water quality standards and standard values recommended by World Health Organization (WHO), it is found that most of the water samples are very hard and unsuitable for drinking purposes.