杭州市区备用饮用水源地水质状况及安全分析

Quality and safety analysis of alternative sources of drinking water in Hangzhou

于2012—2014年对杭州市区贴沙河、珊瑚沙水库、湘湖、三白潭和喜庵港5个备用饮用水源地进行了109项指标及水质急性毒性监测,并采用加拿大水质指数法进行水质安全评价。结果显示,珊瑚沙水库水质基本符合生活饮用水源地一级保护区Ⅱ类水质标准,其余4个备用饮用水源地水质均不达标;各备用饮用水源地特定项目有少数指标检出但均未超标;湘湖、珊瑚沙水库和贴沙河水质安全已受到影响,三白潭和喜庵港水质安全性差;各备用饮用水源地水质均无急性毒性。

109 water quality indicators and acute toxicity monitoring in five alternate sources of drinking water in Hangzhou,including Tiesha River, Shanhusha Reservoir,Xiang Lake, Sanbai Lake and Xi＇an Harbor, were conduc- ted during 2012-2014. The Canadian Water Quality Index was used to evaluate the water quality of these alternate sources of drinking water. The results showed that the water quality of Shanhusha Reservoir almost fitted the drink- ing water source protection class Ⅱ water quality standard, while the remaining four alternative sources of drinking wa- ter were not qualified class Ⅱ standard; few indicators of specific project were detected in alternate sources of drinking water, but these detected indicators still below the limit value; the water quality and safety of Tiesha River, Shanhusha Reservoir and Xiang Lake had been affected; the water qualities of Sanbai Lake and Xi＇an Harbor were in poor situa- tion; each alternative sources of drinking water had no acute toxicity.