To establish quality criteria, measures of chemical, physical constituents must be specified, as well as standard methods for reporting and comparing results of water analysis. Keeping it in view the present study was taken up to analyze the drinking water sample of different localities .We calculate the water quality index with the help of fifteen physico- chemical parameters for drinking water of different localities. The estimated values shows that some parameters are under the permissible limit and other shows variation from the prescribed WHO standard. The value of W.Q.I. also varies between the 80 -200 so the water of these localities are unfit for drinking and human consumption without purification.