2003-2005年怀化市生活饮用水检测结果分析

目的了解怀化市鹤城区饮用水卫生情况。方法按《GB5750-85生活饮用水标准检验法》,对2003-2005年城区市政管网末梢水及高层建筑二次饮用水水质进行检测。结果鹤城区管网末梢水除游离性余氯合格率(88.41%)、铁合格率(69.57%)偏低外,感官、微生物、毒理学指标合格率均在95%以上。与之相比,高层建筑二次供水浑浊度(82.26%),游离性余氯(80.65%),细菌总数(83.06%)等指标合格率明显偏低(χ2检验P<0.01)。结论怀化市鹤城区市政管网末梢水水质总体要好于高层建筑二次供水,二次供水可能存在生物性污染,有待于加强卫生消毒措施以改善水质。

Analysis of Drinking Water Quality of Huaihua City From 2003 to 2005

ObjectiveTo investigate the condition of drinking water quality in Hecheng District of Huaihua City.MethodThe water from the end of the city's tube web and the secondary drinking water of high building from 2003 to 2005 were evaluated according to the Standard of GB5750-85 Testing Regulation of Drinking Water.Result In drinking water of Hecheng District of Huaihua City,the qualification rates of sense,microorganism and toxicology indexes were all above 95%,while the qualification rates of free residual chlorine(88.41%) and ferrum(69.57%) were relatively low.Comparatively,the qualification rate of secondary water supply of high building was significantly low,turbidity(82.26%),free residual chlorine(80.65%),and the total bacterial count(83.06%) were the most unqualified items(P<0.01).Conclusion Overall,the drinking water quality of the end of the city's tube web in Hecheng District of Huaihua City is better than the secondary water supply of high building.Biological pollution may possibly exist in the secondary water supply,sanitation sterilization measures should be improved to promote the drinking water quality.