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目的了解三峡库区腹地万州城区二次供水现状及饮用水质存在问题,为加强二次供水卫生管理及卫生行政部门监督执法提供科学依据。方法对2004-2007年万州城区二次供水单位的供水设施及饮用水质进行现场调查和采样,对其相关资料进行收集整理和分析。结果2004-2007年万州城区二次供水检测水样205个,合格160个,合格率78.05%;物业区、宾馆、综合区二次供水水质合格率分别为74.73%、78.46%和83.67%,3者之间水质合格率差异有统计学意义(χ2=18.25,P<0.005);2005与2007年水质合格率差异有统计学意义(χ2=5.13,P<0.05)。结论万州城区二次供水水质合格率不高,物业区、宾馆二次供水水质合格率还更低,存在安全隐患。
Objective To understand the status of secondary water supply and drinking water quality in Wanzhou urban area in the hinterland of the Three Gorges Reservoir Area and provide scientific basis for strengthening the secondary water supply sanitation management and supervision and law enforcement of health administrative departments. Methods The water supply facilities and drinking water quality of the secondary water supply units in Wanzhou urban district from 2004 to 2007 were investigated and sampled on site, and the relevant data were collected and analyzed. Results The water samples of secondary water supply in Wanzhou City from 2004 to 2007 were 205, with a pass rate of 160 and a pass rate of 78.05%. The qualified rates of secondary water supply in the property area, hotels and comprehensive areas were 74.73%, 78.46% and 83.67% respectively. 3 There was significant difference in passing rate of water between the two groups (χ2 = 18.25, P <0.005). There was a significant difference in passing rate between 2005 and 2007 (χ2 = 5.13, P <0.05). Conclusion The water quality of secondary water supply in Wanzhou urban area is not high, and the passing rate of secondary water supply in the property area and hotels is still lower, which has potential safety hazard.