Analysis on sanitary conditions of drinking water quality in Jiangmen City from 2002 to 2011

Objective To know about the sanitary conditions of drinking water quality in Jiangmen City from 2002 to 2011,so as to provide scientific basis for improving drinking water quality.Methods Water samples were collected and kept according to the relevant regulations in the health standards of drinking water(GB/5750-2006).The results were evaluated according to the relevant regulations in the health standards of drinking water(GB /5749-2006).Results The average qualified rate of the drinking water in Jiangmen City was 76.29% during the past 10 years.The indicators with low qualified rate were bacteria count,escherichia coli,coliform bacteria,thermotolerant coliforms,mold and yeast,iron,manganese,pH,turbidity and residual chlorine.Among 7 kinds of drinking water samples,the qualified rate of the finished water was the highest,which was 94.94%.The followed was the network water,and the qualified rate was 91.21%.The next was secondary supply water,direct drinking water,bottled purified water,source water and well water,and the qualified rate was 87.84%,69.72%,54.06%,49.43%,30.56%,respectively.Conclusions The sanitary indicators of drinking water of Jiangmen City from 2002 to 2011 exceeded the standard seriously,especially well water,source water,bottled purified water and direct drinking water,which should be paid great attentions to by leaders and relevant departments.