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目的了解京津冀地区自建设施供水单位的水质现状,分析存在的风险指标。方法于2015年对108家自建设施供水单位的基本情况进行调查,并采集出厂水进行水质检测。结果京津冀地区自建设施供水单位多以深井水为水源,48%(52/108)的单位未采取水处理措施,26.8%(29/108)的单位采取了消毒措施,超过1/2的自建设施供水单位日供水能力在500 t以下。氟化物、硝酸盐氮合格率分别为67.6%(73/108)和86.1%(96/108)。结论本次调查的京津冀地区自建设施供水单位的供水规模大多较小,供水水质与水源地质因素和处理工艺落后有关。
Objective To understand the status quo of water quality of self-built water supply units in Beijing-Tianjin-Hebei region and analyze the existing risk indicators. Methods In 2015, the basic situation of 108 self-built water supply units was investigated and water samples were collected for water quality testing. Results Most of the self-built water supply units in Beijing-Tianjin-Hebei region used deep-well water as the water source, 48% (52/108) did not take water treatment measures, and 26.8% (29/108) took disinfection measures more than 1/2 Of self-built water supply unit daily water supply capacity of 500 t or less. Fluoride, nitrate nitrogen pass rates were 67.6% (73/108) and 86.1% (96/108) respectively. Conclusion The water supply scale of self-built facilities and water supply units in Beijing-Tianjin-Hebei region in this survey is mostly small, and the quality of water supply is related to the geological factors of water source and the backward treatment technology.