Risk Assessment and Countermeasures of Heavy Metals in Drinking Water Environment of Guizhou Province

Abstract

The quality of drinking water is closely related to the health condition of the population. In order to effectively assess the heavy metal environment of drinking water in Guizhou Province, this paper first analyzed the distribution characteristics of heavy metals in drinking water, and then used the environmental health risk assessment model recommended by the United States Environmental Protection Agency (US EPA) to investigate and analyze the toxic and hazardous substances in drinking water in Guizhou Province in 2019 to assess the health risks of heavy metals in drinking water. The survey results showed that the cancer-causing health risks of drinking water in Guizhou Province exceeded the EPA evaluation standards, while the non-cancer-causing health risks were much lower than the evaluation standards. Finally, for the heavy metal environment of drinking water in Guizhou province, this paper proposes corresponding response strategies from two perspectives of water quality monitoring and government supervision.