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目的了解北海市二次供水的水质卫生状况,为政府部门制定管理决策提供技术依据。方法对该市93家二次供水单位的水质进行卫生检测,并对供水水质影响因素进行分析。结果调查二次供水单位93家,检测二次供水93份,水质合格的71份,合格率为76.3%;合格率以中小学校为最高(83.3%),其次为宾馆酒店(81.8%),而物业小区最低(57.1%);影响二次供水水质合格率的主要指标是消毒剂二氧化氯含量和pH值,合格率分别为76.3%和77.4%;二次供水贮水池密封与否以及水池定期清洗与否直接影响供水水质,表现为水池口密封的二次供水水质合格率显著高于水池不密封的水质(χ2=18.21,P<0.01),水池定期清洗的水质合格率显著高于水池不清洗的水质(χ2=20.12,P<0.01)。结论北海市二次供水水质合格率偏低,存在一定的介水疾病传播风险,应加强对二次供水设施的卫生管理。
Objective To understand the status of water quality and hygiene in secondary water supply in Beihai and provide technical basis for government departments to make management decisions. Methods The water quality of 93 secondary water supply units in the city was tested, and the influencing factors of water quality were analyzed. Results 93 secondary water supply units were tested, 93 secondary water supply tests were conducted and 71 qualified water quality tests were conducted with a pass rate of 76.3%. The pass rate was 83.3% for primary and secondary schools and 81.8% for hotels and restaurants. (57.1%). The main indexes that affected the pass rate of secondary water supply were chlorine dioxide content and pH value of disinfectant, the pass rates were 76.3% and 77.4% respectively; the secondary water supply tank was sealed or not, Cleaning or not directly affect the quality of water supply, the performance of the pool mouth seal secondary water quality pass rate was significantly higher than the pool is not sealed water quality (χ2 = 18.21, P <0.01), regular pool water cleaning pass rate was significantly higher than the pool Cleaning water quality (χ2 = 20.12, P <0.01). Conclusion The passing rate of secondary water supply in Beihai is low, so there is a certain risk of transmitting water-borne diseases. Hygienic management of secondary water supply facilities should be strengthened.