HYDRO CHEMICAL ANALYSIS OF WELLS WATER QUALITY OF HISUA BLOCK AT NAWADA DISTRICT, BIHAR

The present paper deals with dug wells water quality of Hisua block at Nawada District, Bihar. The well water parameters such as temperature, pH, turbidity, electrical conductivity, alkalinity, dissolved oxygen, biochemical oxygen demand, total hardness, calcium, magnesium, phosphate, sulphate, c, iron, chloride and fluoride were estimated in the samples to evaluate their quality. Our result revealed that concentration of DO, BOD, Total hardness, Calcium, magnesium, sulphate, turbidity, alkalinity, phosphate, iron and chloride are within permissible limits and Iron, phosphate are negligible in this well. The concentration of from 20 mg/l to 60 mg/L which is higher the permissible limit of WHO health based guide line values. The higher concentration of nitrate needs proper treatment before the use for drinking purposes and irrigation purposes. Finally it can be suggested that an intensive study may be carried out before the domestic consumption. Kew words : Well water ,DO, BOD, Total hardness, Calcium, magnesium, alkalinityand chloride.