Quality Surveillance of Drinking Water in Chenzhou City During the Period of 2003～2007

Objective To investigate the quality of drinking water in Chenzhou City,and to provide suggestion for improving the quality of drinking water.Methods The representative samples of urban secondary water-supply,tap water,chlorinated water,and source water were selected to evaluate the quality of water by using the national standard.Results The qualified rates of urban secondary water-supply,tap water,chlorinated water,and source water were 86.3%,84.9%,97.4%,and 100.0%,respectively.The ineligible indexes were free residual chlorine,turbidity,coli group,and total bacterial count.Conclusions The quality of drinking water in Chenzhou City can meet the national standard on the whole,but the relevant departments should pay special attention to the existed problems.