摘要
目的了解广州市生活饮用水水质卫生状况,为保证饮水水质安全提供科学依据。方法按照《生活饮用水标准检验方法》(GB/T 5750-2006)对2018年广州市市政供水、乡镇水厂、农村饮水安全工程和分散式供水的水质进行监测,依据《生活饮用水卫生标准》(GB 5749-2006)对监测结果进行评价,比较不同类型饮用水的水质卫生状况。结果2018年广州市市政供水、乡镇水厂、农村饮水安全工程和分散式供水的出厂水合格率分别为100.00%、96.88%、14.29%和7.69%,市政供水和乡镇水厂出厂水合格率均高于农村饮水安全工程和分散式供水,差异均有统计学意义(χ^(2)_(市政vs农村)=80.384,χ^(2)(乡镇vs农村)=118.760,χ^(2)(市政vs分散)=72.839,χ^(2)(乡镇vs分散)=102.749,P<0.01)。农村饮水安全工程和分散式供水的主要不合格项目是微生物指标和pH值。管网末梢水的合格率为94.41%,二次供水合格率为84.30%,主要不合格项目为游离余氯、菌落总数、浑浊度和肉眼可见物。结论广州市农村饮水安全工程和分散式供水的水质卫生状况较差,应加强对农村供水的水质监管和安全卫生管理。
Objective To understand the sanitary status drinking water quality in Guangzhou and to provide a scientific basis for ensuring the safety of drinking water quality.Methods We analyzed the water quality monitoring results of municipal water supply,township water plants,rural drinking water safety projects and distributed water supply in Guangzhou in 2018 in accordance with the Standard Test Methods for Drinking Water(GB/T 5750-2006),and the monitoring results were evaluated according to the Hygienic Standards for Drinking Water(GB 5749-2006).To compared the water quality and sanitation status of different types of drinking water.Results In 2018,the qualified rates of municipal water supply,township waterworks,rural drinking water safety projects and decentralised water supply in Guangzhou were 100.00%,96.88%,14.29%and 7.69%,respectively.The qualified rates of municipal water supply and township waterworks were higher than those of rural drinking water safety projects and decentralised water supply,and the difference were all statistically significant(χ^(2)_(municipal vs rural)=80.384,χ^(2)_(township vs rural)=118.760,χ^(2)_(municipal vs decentralized)=72.839,χ^(2)_(township vs decentralized)=102.749,P<0.01).The main unqualified items of rural drinking water safety projects and decentralised water supply were microbiological indicators and pH value.The pass rate for end-of-pipe water and secondary water supply were 94.41%and 84.30%,respectively.The main non-conforming items were free residual chlorine,total bacterial colony,turbidity and visible matter to the naked eye.Conclusion The water quality and sanitation of rural drinking water safety project and decentralized water supply in Guangzhou were poor,and the water quality supervision and safety and sanitation management of rural water supply should be strengthened.
作者
周金华
黄仁德
毕华
黎晓彤
孙丽丽
李琴
王德东
钟嶷
郭重山
王大虎
ZHOU Jin-hua;HUANG Ren-de;BI Hua;LI Xiao-tong;SUN Li-li;LI Qin;WANG De-dong;ZHONG Yi;GUO Chong-shan;WANG Da-hu(Guangzhou Center for Disease Control and Prevention,Guangdong 510440,China)
出处
《医学动物防制》
2021年第6期595-597,601,共4页
Journal of Medical Pest Control
基金
广州市科技计划项目(201804010194)
广州市卫健委一般引导项目(20191A011068)。
关键词
生活饮用水
水质
卫生状况
分析
Drinking water
Water quality
Sanitary status
Analysis
