2010成都市干旱期农村分散式供水水质调查分析

Drinking Water Quality of Rural Decentralized Rural Water Supply at Arid Period in Chengdu

目的了解2010年干旱时期成都市农村分散式供水的水质状况。方法 2010-04,在成都市干旱受灾最重的3个区(市/县),随机整群抽样,采集100份水样进行监测、抽取324户农户进行问卷调查。结果饮用水卫生合格率为7.00%,总大肠菌群合格率10.00%,耐热大肠菌群合格率34.00%,平均(中位数)超标倍数达7～8倍,居民的感官满意度较干旱前低(P<0.05)。结论成都市干旱期饮用水水质恶化,不合格的指标主要是微生物指标和感官性状指标,宣传农户重视饮水卫生尤其是要饮用煮沸后水。

Objective To understand the drinking water quality of rural decentralized water supply at arid period in Chengdu.Methods Totally 324 farmers were sampled randomly to receive questionaire survey,and 100 samples of drinking water were monitored in 3 most serious arid stricken counties in Chengdu on April,2010.Results The qualified rate of drinking water was 7.00%,of the total coliform was 10.00%.The qualified rate of the themotolerant coliform bacteria was 34.00%,and exceeded 7-8 times in average（median）.The farmers＇ satisfaction to the drinking water decreased at arid period than before.Conclusion The quality of drinking water was worse at the arid period,and the main unqualified indicators were microbial indicators and sensory traits.It was important to guide the famers boiling the water before drinking.