浙江省农村水厂管网末梢水水质调查监测情况分析

Surveillance of water quality of rural waterworks in Zhejiang Province

目的为了掌握农村水厂的管网末梢水水质和卫生状况,确保农村居民饮水卫生安全。方法选择有代表性的农村水厂的管网末梢点开展基本情况调查,并对不同水处理方式的水厂的和不同水源类型的水,在丰、枯水时期进行采样监测,按照国家《生活饮用水卫生标准》(GB5749-2006)进行评价。结果选择能代表全省的县(市)区为监测点,被选的448个乡镇有78.0%以上的农村人口饮用了农村集中式工程的给水;管网末梢水以不同水处理方式和采用不同水源水的水质综合指标丰、枯水期的合格率为分别为84.9%和85.7%。结论农村水厂管网末梢水水质综合指标合格率较低,主要是水厂水处理工艺不完善,消毒不够规范等所致。

Objective To investigate the hygienic status and the quality of terminal tap water in rural waterworks, and to ensure drinking water safety in rural areas. Methods The monitor sites were assigned in country towns. A survey of the baseline data was conduted. Water samples from the waterworks with different water process types as well as various water sources were collected and monitored according to the standards for drinking water quality. Results There were 78.0% of the rural population from the 448 monitoring villages and towns used central water supply. The qualified rates of comprehensive water quality indices were 84. 9% and 85.7% in high and low water seasons, respectively. Conclusion The qualified rates of comprehensive water quality indices in the countryside of Zhejiang Province are lower. The main reasons are that the water process technology is imperfect and the disinfection of water is nonstandard.