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Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems and Announcement of Public Meeting (Draft)
Mar. 12, 2021
The EPA is proposing a Safe Drinking Water Act (SDWA) rule that would require public water systems to collect national occurrence data for 29 per- and polyfluoroalkyl substances (PFAS) and lithium. This proposed rule would require all community and non-transient non community water systems serving 3,300 or more people, and a representative sample of smaller water systems, to conduct monitoring. PFAS and lithium are not currently subject to national primary drinking water regulations, and EPA is proposing to require the collection of drinking water occurrence data to inform EPA decisions. This proposal fulfills a key commitment in "EPA's 2019 Per- and Polyfluoroalkyl Substances (PFAS) Action Plan" (https://www.epa.gov/pfas/epas-pfas-action-plan) by proposing the collection of more drinking water occurrence data for a broader group of PFAS. EPA is also announcing two public meetings (via webinar) to discuss this proposal of the fifth Unregulated Contaminant Monitoring Rule (UCMR 5). Comments must be received on or before 10 May 2021. POC is Brenda D. Bowden, Standards and Risk Management Division (SRMD), Office of Ground Water and Drinking Water (OGWDW) (MS 140), Environmental Protection Agency, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268; tel: (513) 569-7961; email: bowden.brenda@epa.gov.

(Federal Register 11 March 2021 [Proposed Rule] pages 13846-13872)

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Last Updated: January 22, 2018