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目的了解2008-2010年广州市分质供水(纯净水和净水)水质的卫生状况,为监督管理提供科学依据。方法对2008-2010年广州市分质供水(纯净水和净水)的水源水、处理水和末梢水进行采样、监测和分析。结果纯净水和净水的水源水合格率分别为64.74%、42.85%;处理水合格率分别为90.75%、96.10%;末梢水的合格率分别为75.72%、92.20%。纯净水(净水)的处理水和末梢水微生物指标合格率均大于90%,理化指标合格率均大于93%。纯净水中末梢水铅的合格率明显低于水源水和处理水以及净水末梢水的铅合格率。结论分质供水经制水工艺处理后,水质基本符合相关标准,卫生监督部门应加大监督力度,定期指导和监督分质供水水站对蓄水设施和输配水管道进行清洗和消毒,防止水质受到污染。
Objective To understand the sanitary status of water quality of pure water and purified water in Guangzhou from 2008 to 2010 and provide a scientific basis for supervision and management. Methods Sampling, monitoring and analyzing the water source, treated water and peripheral water of Guangzhou sub-quality water supply (purified water and purified water) from 2008 to 2010. Results The qualified rates of pure water and pure water were 64.74% and 42.85% respectively. The passing rates of treated water were 90.75% and 96.10% respectively. The pass rates of the peripheral water were 75.72% and 92.20% respectively. Pure water (water) treatment of water and peripheral water microbial indicators pass rate of more than 90%, physical and chemical indicators pass rate of more than 93%. The qualified rate of lead in pure water was significantly lower than the qualified rate of lead in water and treated water and water at the end of purified water. Conclusion After the quality water supply is treated by the water treatment process, the water quality basically meets the relevant standards, and the health supervision department should step up supervision and regularly guide and supervise the water supply station to clean and disinfect the water storage facilities and the water distribution pipelines Water pollution.