2012年湖口县农村饮水安全工程水质监测结果分析

Result analysis of drinking water safety project water quality monitoring in rural area of Hukou County in 2012

目的:了解湖口县农村饮水安全工程水质状况和存在的问题,为政府相关部门采取措施提供科学依据。方法:2012年,分别于丰水期、枯水期在49个监测点采取出厂水和末梢水各1份。结果:湖口县农村集中式供水水厂覆盖农村人口18.51%,分散式供水覆盖率81.49%。监测的49个农村饮水安全工程中,检测样品196份,总合格率63.27%,合格率不高,枯水期和丰水期水质合格率差异无统计学意义(χ2=0.09,P>0.05),出厂水和末梢水的合格率差异无统计学意义(χ2=0.09,P>0.05),水源为地表水的合格率明显高于水源为地下水的合格率,两者差异有统计学意义(χ2=22.06,P<0.05)。主要是微生物指标不合格,其中菌落总数合格率37.76%,总大肠杆菌数合格率25.51%。结论:湖口县农村饮水安全工程水质合格率低,主要是微生物污染,农村饮水安全存在风险。

Objective:To comprehend the situation of water quality and the existing problems of drinking water safety project water quality monitoring in rural area of hukou county and provide a scientific basis for relevant government departments.Methods:One copy each of the finished water and peripheral water was respectively took from 49 monitoring points in wet and drought period in 2012.Results:Waterworks covered rural population to 18.51% by concentrated water supply in rural area of hukou county.Scattered water supply covered to 81.49%.In 49 rural drinking water safety projects monitored in rural,samples were 196;the total qualified rate was 63.27%;qualified rate was not high.The water quality qualified rate of wet and drought periods had no significant difference(χ0.09,P0.05).The water quality qualified rate of finished water and peripheral water had no significant difference(χ0.09,P0.05).The water quality qualified rate of water from surface water was apparently higher than underground water.The difference was statistically significant(χ22.06,P0.05).The main problems had indicators unqualified of microorganism;the total qualified rate of bacterial colony was 37.76%;the qualified rate of total number of E.coli was 25.51%.Conclusion:The Water quality qualified rate is low in drinking water safety project in rural area of hukou county.The Main reason is microbial contamination.There are risks on rural drinking water safety.