天津市饮用水源地水环境健康风险评价

Environmental Health Risk Assessment of Drinking Water Source in Tianjin

水环境健康风险评价是将水环境污染与人体健康定量联系的一种新型评价方法,它可将单项指标直接落实到人体健康上去,从而确定污染物的主次和治理的优先权。文章通过对于桥水库进行水环境健康风险评价,指出目前于桥水库水体中存在的各类污染物所致危害的风险很低,并呈逐年下降趋势,饮用水比较安全,主要风险因子为化学致癌物中的砷,非化学致癌物的影响非常微小。

Health risk assessment of water environment as a new assessing method which quantificationally connects water pollution and human health, directly puts single indicator to human health and defines the priority of controlled pollutants. Health risk assessment of Yuqiao Reservoir, Tianjin was made, results showed that the risk of the Reservoir led by various pollutants was little, risk had a trend of decreasing in recent 5 years, and the drinking water was rather safe. Results showed that main factor leading to healthy risk was arsenic, one of chemical pollutant that can lead to cancer while risk from nonchemical pollutants was quite tiny.