某市2004～2005年二次供水的卫生监测

[目的]通过分析某市2004～2005年二次供水卫生监测资料,寻找该市二次供水水质污染的隐患,并提出整改建议以防止水源性疾病的发生和流行。[方法]抽取某市五城区二次供水单位水样,按《生活饮用水标准检验方法》和《生活饮用水卫生规范》对余氯、细菌总数、总大肠菌群、粪大肠菌群、色度、浑浊度、肉眼可见物、臭和味进行监测,并对结果进行统计分析。[结果]某市2004、2005年的二次供水合格率分别为90%和92%,微生物超标率分别是8.3%和6.3%。[结论]该市2004～2005年二次供水微生物指标合格率较低,水体易受生物性污染,需加强二次供水设施的清洁消毒。

HYGIENIC MONITORING OF SECONDARY DRINKING WATER SUPPLY IN SOME CITY DURING 2004-2005

[Objective]To analyze the hygienic monitoring data of secondary drinking water supply in some city during 2004~2005,explore the hidden danger of water pollution of secondary drinking water supply system of this city,and propose corresponding suggestions to prevent the occurrence and prevalence of water-borne diseases.[Methods]The water samples from secondary water supply units in five districts in some city were collected.According to"Standard Examination Methods for Drinking Water"and"Hygienic Standard for Drinking Water",chlorine residual,total bacterial count,total coliform group,fecal coliform and colourity,turbidity,visible residual and osmyl in water samples were detected,and the results were statistically analyzed.[Results]The qualification rates of secondary drinking water supply of some city in 2004,2005 were 90% and 92% respectively,and the exceeding standard rates of microorganism were 8.3% and 6.3% respectively.[Conclusions]The qualification rates of microbial indexes of secondary drinking water supply of some city in 2004 and 2005 are low,which indicates that water body is easy to be polluted biologically.So the cleaning and sterilization of secondary water supply facilities should be strengthened.