2004-2008年荔湾区生活饮用水水质监测分析

Analysis of the Domestic Drinking Water Quality Monitoring Results in Liwan District from 2004 to 2008

目的了解荔湾区自来水管网末梢水和二次供水的生活饮用水水质情况,评价卫生监测的效果。方法对广州市荔湾区芳村2004-2008年管网末梢水和二次供水水质监测资料进行统计,按照《生活饮用水检验规范》卫生部(2001年)和《生活饮用水卫生标准》GB5749-2006进行分析评价。结果该地区生活饮用水的合格率为91.30%,管网末梢水的合格率95.17%高于二次供水的合格率85.88%,而铅合格率前者的98.53%明显高于后者的88.53%(P<0.001)。第四季度水质合格率最低,分别为86.90%、76.67%。结论荔湾区芳村生活饮用水水质较广州市水质总体合格率高,但二次供水水质较差。不同季节水质变化较大。今后要加强生活饮水尤其是二次供水的管理,提高出厂水的消毒质量,加强二次供水设施的新技术、新工艺的研究。

Objective To investigate the quality of end water and the secondary drinking water supply in Fangcun of Liwan District,and evaluate the water quality monitoring.Methods Data on water quality monitoring in Fangcun of Liwan District during 2004-2008 were analyzed and compared with the Ministry of Public Health Sanitary Standard for Drinking Water 2001.Results The overall qualification rate of domestic drinking water in this region is 91.30%.And the qualification rate of the end water（95.17%） is higher than the secondary drinking water supply（85.88%）.It＇s only 88.53% for lead qualification rate in secondary drinking water.The qualification rate of both kinds of water in winter is lower than other seasons.Conclusion The overall qualification rate of domestic drinking water in Fangcun of Liwan District is higher than in Guangzhou,but the quality of the secondary drinking water supply is poor in Fangcun.There are larger changes in water quality in different seasons.Strong management of the drinking water especially the secondary drinking water supply and improvement of the disinfection quality of end water were needed.New technology in water treatment in Secondary water supply should be used.