长沙市2009年-2011年生活饮用水微生物检测指标分析

Analysis on microorganism parameters of drinking water in Changsha city from 2009 to 2011

目的:了解长沙市区生活饮用水微生物指标状况,为饮用水卫生管理提供依据。方法:回顾分析长沙市2009年-2011年生活饮用水水质监测样品微生物检测指标。结果:出厂水各检验项目合格率全部为100%,但井水的菌落总数、大肠菌群、耐热大肠菌群和大肠埃希氏菌群四个项目的合格率分别为51.0%,59,2%,50.6%和61.2%;管网末梢水菌落总数和大肠菌群合格率均为100%,二次供水和直饮净水两个指标的合格率分别为95.58%、99.80%和85.41%、99.46%。结论:长沙市市政管网供水及二次供水微生物指标合格率较井水和直饮净水高。

Objective：To understand the microorganism parameters of drinking water in Changsha city and provide basis for the management of drinking water. Methods： The microorganism parameters of drinking water monitoring samples from 2009 to 2011 in Changsha were analyzed retrospectively. Results： The pass rate on all test items of samples from water supply was 100% , but the pass rates of total number of colonies, coliform bacteria, heat - re- sistant coliform and Escherichia coli of the well water were 51.0% ,59,2% ,50.6% ,61.2% ; the pass rates of total number of colonies and coliform bacteria of tap water were both 100% ,the two parameters of secondary supply water and direct drinking water were 95.58% ,99.80% and 85.41%, 99.46%. Conclusion： The pass rates of microorganism parameters in municipal and secondary supply water were better than well water and direct drinking water.