2005—2009年北京市昌平区自建设施供水监测点水质状况分析

目的了解北京市昌平区自建设施供水水质状况,为开展自建设施供水卫生管理工作提供依据。方法分别采集辖区内10个自建设施供水监测点2005—2009年枯、丰水期共计100个水样进行检测分析。结果 5年间,昌平区10个自建设施供水监测点的100个水样的平均合格率为85%,且各年度检测合格率呈逐年下降趋势。不合格指标主要是总大肠菌群、砷、锌、锰、浑浊度等。结论昌平区10个自建设施供水水质的微生物指标、毒理学指标、感官化学指标均存在超标现象,缺少必要的防护消毒设施、受地质情况的影响、自建设施供水设备陈旧老化和供水管理和监督不到位是4个主要原因,今后应加强自建设施供水水源防护,针对具体不合格指标采取有针对性改进措施,同时加强监督监测和管理,以保证供水质量和饮用水的卫生安全。

Analysis on Water Quality of Monitoring Points of Self-built Water Supply in Changping District of Beijing during 2005-2009

[Objective]To understand the water quality of self-built water supply in Changping district of Beijing,provide the scientific basis for sanitary management of self-built water supply.[Methods]100 water samples selected from 10 monitoring points of self-built water supply in this district in dry season and wet season during 2005-2009 were tested and analyzed.[Results]The average qualified rate of 100 water samples from 10 monitoring points of self-built water supply in Changping district in 5 years was 85%,a...