Analyzed the condition of drinking water in Jiangmen city during 2002～2006

Objective To understand the drinking water condition in Jiangmen City druing 2002～2006,and provided scientific basis for improving drinking water quality.Methods Based on the Standards for Drinking water Quality(GB/T8538-95) the data of five-year successtive monitoring of drinking water quality were analyzed.Results The average qualification rate of drinking water was 93.23% in Jiangmen City druing 2002～2006,and the indicators with low qualification rates were coliform bacteria,bacteria count,free chlorine residual,iron,turbidity,pH,oxygen demand etc.The qualification rates were in the order of finished water,water supply pipes,source water,scondary supply water.There no significant differences were observed in qualification rate between source water and finished water,so did between the scondary supply water and water supply pipes.The qualifiaction rates of scondary supply water and water supply pipes were significantly enhanced in 2006 as compared with previous years.Conclusion The qualification rate of drinking water quality in Jiangmen City is improving year by year,but efforts including renovation and modification of branch water pipes and tubes be carried out to enhance the drinking water quality.