石家庄市部分农村饮用水水质现状分析

Analysis of rural drinking water quality in Shijiazhuang

目的:了解石家庄农村集中式、分散式生活饮用水水质卫生状况及其变化动态,为政府提供决策依据。方法:于2012年枯水期(3月-4月)和丰水期(7月-8月),对石家庄市9县市270座农村饮水的水源类型、水处理方式、消毒情况等进行现场调查。采集集中式供水点260个(每点采取出厂水和末梢水各1份),分散式供水点10个(每点采取末梢水1份)共计530份饮用水样品。按照《生活饮用水标准检验方法》(GB/T 5750–2006)对出厂水和末梢水及分散式供水进行检测。结果:共采集水样1060件,合格630件,合格率为60%。集中式供水枯水期水样合格率61.9%(322/520)高于丰水期57.7%(300/520),出厂水水样合格率61.15%(318/520)高于末梢水59.23%(308/520)。结论:石家庄市部分农村饮水的水处理工艺不完善,微生物学指标超标较为严重,应加强农村生活饮用水消毒工作,其安全性应受到各级部门注意。

Objective：To know the hygiene situation and change trend of rural drinking water and provide drinking water quality data for the government decision-making.Methods： The water sources,water treatment methods and disinfection situation in 270 rural drinking water sites of 9 counties and cities were carried out field investigationn in dry season（March to April） and wet season（July to August） of 2012.Two hundred and sixty central water supply units and ten decentralized water supply units were involved in this test.One treated water sample and one tap water sample from each central water supply unit,while one tap water sample from each decentralized water supply unit were tested according to ＂standard examination methods for drinking water＂（GB/T 5750-2006）.Results： Six hundred and thirty water samples were qualified in 1060 water samples（60%）,the pass rate of central water supply spots in dry season was 61.9%（322/520）,higher than that in rainy season（57.7%,300/520）.The pass rate of the treated water was 61.15%（318/520）,which is better than that of the tap water sample（59.23%,308/520）.Conclusion： In Shijiazhuang,the water treatment technology of central rural water supply is still imperfect,and the microbiological items were found to seriously exceed the standards.So the relavent departments should paid more attention to the rural drinking water safety.