Unregulated Contaminant Monitoring Rule

Latest Developments…

    The Environmental Protection Agency March 3 proposed its third unregulated contaminant monitoring rule. The proposal will require public drinking water utilities to monitor 28 substances, including perfluorooctanoic acid and a number of hormones, and assess for two viruses. The agency is required under the Safe Drinking Water Act to issue a UCMR every five years, which applies to provisions in 40 CFR 141 and 142. Contaminants included in the list are selected from the Contaminant Candidate List. The rule can specify as many as 30 contaminants for monitoring. UCMR 3 will target nine volative organic compounds, seven hormones, four metals, an oxyhalide chlorate, the solvent 1,4-dioxane, six perfluorinated alkyl acids, and two categories of microbes—enterovirus and nonovirus.Based on the results of the monitoring, EPA may elect to target the contaminants for possible regulation. In addition to the 30 contaminants, the agency also is seeking comment on whether to require large public water systems to monitor hexavalent chromium. Comments will be accepted through May 2 and the agency anticipates final action on the rule in 2012.
-- You can find the text of the proposed rule in the Federal Register Archive

Did you know…
    Under the Safe Drinking Water Act, EPA can require drinking water systems to monitor up to 30 contaminants per five-year cycle.
-- Read more...in Water Pollution Control Guide on maximum contaminant levels and drinking water monitoring