重庆市涪陵区龙潭引水工程水质卫生评价

目的了解重庆市涪陵区龙潭引水工程水质卫生状况，为该区有效开发利用水资源提供科学依据。方法2006年对引水工程新桥、八一桥、桃子沟和卫东等水库水源开展卫生学调查，收集监测数据，通过整理分析，依据《地表水环境质量标准》和《生活饮用水卫生标准》评价。结果细菌学指标：除八一桥水库水样粪大肠菌（2500个／L）超过地表Ⅱ类标准1．25倍，另47件水样均未超标；一般化学指标（11项）和毒理指标（10项）均符合生活饮用水卫生标准要求；农药六六六、DDT、对硫磷、乐果、敌敌畏、内吸磷均未检出。结论涪陵区龙潭引水工程水质达地表水环境质量Ⅱ类标准，只要加强水源保护，可以作为生活饮用水源。

Sanitary Evaluation on Water Quality of Longtan Delivery Water Project in Fuling District of Chongqing City

[ Objective] To study the sanitary status and water quality of Longtan delivery water project in Fuling district of Chongqing, provide scientific evidence for effective exploitation of water resource. [ Methods ] The water resources of delivery water project, including Xin Qiao reservoir, BaYi reservoir, Tao Zigou reservoir and Weidong reservoir were investigated with hygiene. The surveillance data were collected and analyzed, and evaluated according to Environmental quality standards for surface water and Standards for drinking water quality. [ Results ] Bacteriology analysis showed that faecal coliform （2500/L） of sample from BaYi reservoir exceeded 1.25 times than Grade Ⅱ standard of surface water, and other 47 water samples were normal. The general chemi- cal index （ 11 items ） and toxicological index （ 10 items） of the samples were all conformed to the quality standard for drinking water. Pesticide HCH, DDT, Parathion, Parathionmethyl, Dimethoate, Diehlorvos and Demeton had not been found. [ Conclusion ] The water quality of Longtan delivery water project in Fuling district was achieved Grade Ⅱ standard of surface water. With enhanced protection, it could be adopt as source of drinking water.