目的了解和掌握2012—2013年北京市平谷区饮用水的水质现状,分析存在的问题,为水质改善,促进群众健康提供可参考的依据。方法按照GB/T 5750-2006《生活饮用水标准检验方法》和GB 5749-2006《生活饮用水卫生标准》进行检测评价。结果共检测水样1 236份,总合格率81.80%;毒理学指标的合格率为97.17%,感官性状和一般化学指标合格率为99.68%,微生物指标合格率为84.47%;2012年合格率为77.64%,2013年合格率为87.27%;市政末梢水合格率为97.28%,高层二次供水合格率为85.63%,农饮水安全工程合格率为77.5%,折子工程(农村末梢水)合格率为76.87%;不合格项目主要为总大肠菌群、菌落总数、耐热大肠菌群、硝酸盐、浑浊度、总硬度。结论该区生活饮用水微生物指标超标较严重,农村饮水安全工程和折子工程合格率较低,应采取措施发送该区饮用水质量。 Objective To understand and master the current status of drinking water quality in Pinggu District of Beijing from 2012 to 2013, and to analyze the existing problems so as to provide a reference for improvement of water quality and promotion of public health. Methods According to GB / T 5750-2006 “drinking water standard test methods” and GB 5749-2006 “drinking water health standards” for testing and evaluation. Results A total of 1 236 water samples were tested, with a total pass rate of 81.80%. The pass rate of toxicological indicators was 97.17%, sensory traits and general chemical indicators pass rate was 99.68%, microbial indicators pass rate was 84.47% 77.64% in 2013, with a pass rate of 87.27% in 2013. The passing rate of municipal end-use water was 97.28%, the qualified rate of high-level secondary water supply was 85.63%, and the pass rate of agricultural drinking water safety project was 77.5% 76.87%. The main unqualified items were total coliforms, total colonies, heat-resistant coliforms, nitrate, turbidity and total hardness. Conclusion The microbiological indicators of drinking water in this area exceeded the standard seriously, and the passing rate of rural drinking water safety projects and surrender projects was relatively low. Measures should be taken to send the drinking water quality of the district.