安徽某城区主要饮用水源地水质健康风险评价

Health risk assessment of water quality of main drinking water sources in a city proper in Anhui Province

运用美国环境保护署推荐的健康风险评价模型,对2017年—2019年安徽某城区主要饮用水源地水质健康风险进行初步评价,结果显示:该城区南部三水厂和北部水厂地下饮用水源地通过饮水途径所致人体健康总风险值相差不大,在3.77×10^(-5)~4.87×10^(-5)之间,属于低—中风险以下风险;致癌物对人体健康的潜在危害主要是由六价铬和砷所致,非致癌物对人体健康的潜在危害主要是由氟化物和铅所致。因此,为保护饮用水安全,六价铬、砷、氟化物和铅应作为该城区地下饮用水源地环境风险管理的重点关注对象。

Using the health risk assessment model recommended by U.S. Environmental Protection Agency, the health risk of water quality of main drinking water sources is preliminarily evaluated for a city proper in Anhui Province from 2017 to2019. The results show that there is little difference in the total risk value of human health, between 3.77×10^(-5)~4.87×10^(-5),caused by the drinking water route from the underground drinking water sources of the southern No. 3 water plant and northern water plant, and the risk belongs to one below low-to-medium risk. The harm of carcinogens to human health is mainly caused by hexavalent chromium and arsenic, and the harm of non carcinogens to human health is mainly caused by fluoride and lead. Therefore, in order to protect the safety of drinking water, hexavalent chromium, arsenic, fluoride and lead should be the focus of environmental risk management.