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目的了解北京市海淀区自备水源井的供水情况、水质卫生状况,为改善生活饮用水质,安全饮水提供科学依据。方法对辖区内225眼自备水源井进行卫生学调查,按照《生活饮用水标准检验方法》(GB/T5750-2006)进行检验;用《生活饮用水卫生标准》(GB5749-2006)对水质状况进行评价。结果采集水样225件,合格151件,总合格率为67.1%。检测水质的25项指标中,有11项指标出现过超标情况,按超标严重程度前4位的依次为硝酸盐(以N计)、总大肠菌数、砷、菌落总数,超标率分别为16.0%、6.7%、5.3%及4.4%。自备井的建井时间、井深是水质的可能影响因素。结论海淀区自备水源井水质部分指标未达到国家规定的饮水标准,应加强管理,采取针对性的改善措施。
Objective To understand the water supply and water quality of the self-provided water source wells in Haidian District, Beijing, and provide a scientific basis for improving drinking water quality and safe drinking water. Methods A total of 225 eyes of self-provided water wells in the area were investigated for hygiene and were tested in accordance with the Standard Test Method for Domestic Drinking Water (GB / T5750-2006). The drinking water quality standards (GB5749-2006) Evaluation. Results A total of 225 water samples were collected, of which 151 were qualified, with a total pass rate of 67.1%. Of the 25 indicators of water quality, 11 exceeded the standard, and the top four of the 25 indicators were nitrate (in terms of N), the total number of coliforms, arsenic, total number of colonies and over-standard rates were 16.0 %, 6.7%, 5.3% and 4.4% respectively. Owned wells build well time, well depth is a possible impact of water quality. Conclusion Some indicators of water quality of self-provided water source wells in Haidian District did not meet the drinking water standards stipulated by the state. Management should be strengthened to take targeted improvement measures.