2008年江苏省农村集中式供水水质卫生状况调查

目的全面了解江苏省农村集中式供水水质的卫生现状,为提高江苏省农村饮用水卫生管理水平,制订改水决策提供科学依据。方法对江苏省所有57个县（市、区）农村集中式供水水源类型、取水方式、水质处理情况等进行现场调查。按照《生活饮用水标准检验方法》（GB／T5750-2006）对水样进行采集、保存和检测,检测项目包括感官性状指标、一般化学指标等共19项。依据《生活饮用水卫生标准》（GB5749-2006）对水质结果进行评价。结果我省集中式供水水源以地下水为主,地下水水样合格率低于地面水（P〈0．01）,地下水水样色度、浑浊度、臭和味、肉眼可见物、耗氧量、氨氮、总大肠菌群、耐热大肠菌群合格率高于地面水（P〈0．01）,地下水水样总硬度、铁、锰、硫酸盐、氯化物、溶解性总固体、硝酸盐合格率低于地面水（P〈0．01）。结论江苏省农村集中式供水水样合格率较低,应根据不同水源类型采取综合性措施提高水样合格率,保障广大农村人口饮水安全。

Investigation on Sanitary Status of Drinking Water Quality for Central Water Supply in Rural Areas of Jiangsu Province in 2008

Objectives To investigate the Province. Methods All 57 counties in Jiangsu sanitation status of central water supply in rural areas in Jiangsu province were selected to build a quality monitoring network for rural drinking water supply. Water samples were evaluated by the standard protocol for testing the quality of drinking water （GB 5749-2006）. Results The qualified rate of water samples was 49.45%. The quality of surface water was better than ground water （P 〈 0.01 ）. The unqualified rate of chromacity, turbidity, odor and taste, visible residues, oxygen consumption, ammonia nitrogen, total coliform bacteria and heat proof coliform bacteria for surface water was higher than that for ground water （P 〈 0. O1 ）, but the unqualified rate of total hardness, iron, manganese, sulfate, chlorides, soluble total solids and nitrate for ground water was higher than that for surface water （P 〈0.01）. Conclusions The quality of water samples collected from central water supply spots in rural areas of Jiangsu Province was low, which should be improved by specific measures according to the type of water source.