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US EPA Information: Proposed Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)

Proposed Fifth Unregulated Contaminant Monitoring Rule (UCMR 5)

EPA announcement today – FYI

EPA Webpage: https://www.epa.gov/dwucmr/fifth-unregulated-contaminant-monitoring-rule

The proposed fifth Unregulated Contaminant Monitoring Rule (UCMR 5) was signed on January 14, 2021. UCMR 5, as proposed, would require sample collection for 30 chemical contaminants between 2023 and 2025 using analytical methods developed by EPA and consensus organizations. This proposed action would provide EPA, states, and communities with scientifically valid data on the national occurrence of these contaminants in drinking water. UCMR data represent one of the primary sources of national occurrence data in drinking water that EPA uses to inform regulatory and other risk management decisions for drinking water contaminant candidates.

 

Pre-publication version of Federal Register notice is available.  Comments will be accepted for 60 days after publication in the Federal Register.

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