EPA Proposes 28 Chemicals for Drinking Water Monitoring
By Mike Henley
The U.S. Environmental Protection Agency (EPA) has issued a proposed rule that calls for listing 28 new chemical contaminants and two viruses for monitoring under the Unregulated Contaminant Monitoring Regulations (UCMR) that are required under the Safe Drinking Water Act (SDWA). Once published, this would be the third UCMR list from the EPA. Previous listed were published in the Federal Register Sept. 17, 1999 (known as UCMR 1), and Jan. 4, 2007 (known as UCMR 2). This article summarizes the EPAﾒs proposed UCMR 3 rule, as well as a separate regulatory determination by the agency to begin steps to regulate perchlorate levels. Information used in the article is based on References 1 and 2. While the focus of the article is on municipal water, these regulations could also impact industrial facilities that produce their own drinking water supplies, as well as pharmaceutical plants that are required to use EPA-quality drinking water as the initial ingredient in their production processes.
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