Shanghai Jiading District drinking water sources of heavy metal pollutants in water was investigated, and the application of the United States Environmental Protection Agency recommended health risk model for preliminary health risk assessment. The results showed that heavy metal carcinogens, caused by the health hazards of cadmium, chromium, arsenic is higher, the average annual risk levels, as 10-7 a-1 ,10-5 a-1、10-5 a-1 , chromium, arsenic risk values are very close to the International Commission on Radiological Protection ( ICRP ) recommended maximum acceptable level of risk, risk greatly, should be a priority control; non carcinogen induced health risks are smaller, personal annual risk order of size for lead, copper, zinc, mercury, value at risk 10-11 a-1 - 10-9 a-1 , much lower than the ICRP recommended maximum acceptable level of risk.%对上海市嘉定区饮用水源地水中重金属污染物进行了调查研究,并应用美国环保署推荐的健康风险模型对其作了健康风险初步评价.结果表明,重金属致癌物质所引起的健康危害较高,镉、铬、砷的平均个人年风险等级分别为10-7a-1、10-5a-1、10-5a-1,铬、砷的年均风险值非常接近国际辐射防护委员会(ICRP)推荐的最大可接受风险水平,致癌风险极大,应优先控制；非致癌物质所引起的健康风险较小,平均个人年风险大小次序为铅、铜、锌、汞,风险值在10-11～10-9 a-1之间,远低于ICRP推荐的最大可接受风险水平.
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