2006年湖南省集中式供水出厂水水质卫生状况  

Water Quality of Product Water from Centralized Water Supply System in Hunan, 2006

作　　者：黄涛[1] 吴传业[1] 庞浩[1] 陈帅[1] 陈彦华[1] 李四海[1] 

机构地区：[1]湖南省疾病预防控制中心公共卫生监测科,湖南长沙410005

出　　处：《环境与健康杂志》2008年第2期127-129,共3页Journal of Environment and Health

摘　　要：目的了解湖南省集中式供水出厂水水质卫生状况。方法选取全部28个市级水厂,抽取39个县级水厂(水源分别来自湘江、资水、沅江、澧水四大水系)。于2006年3—4月,按照GB5749—2006《生活饮用水卫生标准》采集所选各水厂出厂水水样1件(约20L),并进行检测和评价。结果出厂水水样合格率为70.1%(47/67)。在检测的74项指标中,浑浊度、肉眼可见物、pH值、铝、锰、锑、砷、二氯甲烷、三氯甲烷、游离余氯、菌落总数、总大肠菌群、粪大肠菌群有不合格情况。常规项目不合格情况居多,非常规项目中有5个水厂水样锑超标,1个水厂水样二氯甲烷超标。澧水流域水厂水样中铝、硫酸盐、溶解性总固体以及总硬度的含量最高,水样中锑含量超标的水厂均在资江流域中,沅江水系水厂水样中2,4,6-三氯酚的含量最高,湘江水系水厂水样中砷、镉含量最高。结论湖南省城市集中式供水出厂水水质存在个别指标超标的现象。Objective To explore the water quality of the product water from the centralized water supply system in Hunan, 2006. Methods The sanitary quality of the product water samples collected from 28 centralized water supply system in cities and 39 centralized water supply system in counties in Hunan, 2006, which distributed among the area of Xiangjiang River, Zishui River, Yuanjiang River and Lishui River, were determined and evaluated according to the Standards for Drinking Water Quality （GB5749—2006）. Results The eligible rate of the water sample was 70.1%. Among 74 water quality indexes, 12 indexes （such as antimony,aluminum,pH value,manganese and so on） exceeded the standard limits in degrees in some centralized water supply systems. Most of the routine indices of water quality were unqualified and the reference indices were qualified. The quality of some water samples presented statistical difference in some indices （such as aluminum, sulphate, arsenic, et al） among 4 different river areas in Hunan province （P〈0.05）. The contents of aluminum and sulfate in the water samples showed higher level in Lishui River area, the content of stibium showed higher level in Zijiang River area and the contents of arsenic and cadmium showed higher level in Xiangjiang River area. Conclusion The content of some substances in the product water from some centralized water supply systems exceeded the related standard limits in Hunan.

关 键 词：水 集中式供水 卫生调查 

分 类 号：R123.1[医药卫生—环境卫生学]