Association of California Water Agencies
EPARulemakingEPA-HQ-OW-2020-0530

Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems

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Last modified
Feb 25, 2025
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closed 525d ago
Association of California Water Agencies filings
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Activity

Association of California Water Agencies filed 1 comment on this docket between May 11, 2021 and May 11, 2021. 15 other organizations filed here. The comment window closed 525d ago.

What Association of California Water Agencies filed (1)

May 11, 2021· Comment submitted by Association of California Water Agencies (ACWA)· EPA-HQ-OW-2020-0530-0097

Filed on regulations.gov — full text not in the inline record.

Abstract

The Environmental Protection Agency (EPA) uses the Unregulated Contaminant Monitoring Rule (UCMR 5) to collect occurrence data from public water systems for contaminants suspected to be present in drinking water, but that do not have health-based standards set under the Safe Drinking Water Act (SDWA). UCMR 5 provides the EPA and other interested parties with scientifically valid data on the occurrence of selected contaminants in drinking water. This data set is one of the primary sources of nationally representative occurrence data used to guide Agency decisions about emerging contaminants in the public drinking water supply.

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