2040-AF89 202110 The Regulatory Plan and the Unified Agenda of Federal Regulatory and Deregulatory Actions 2040 Office of Water OW 2000 Environmental Protection Agency EPA Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems

The Safe Drinking Water Act (SDWA), as amended in 1996, requires that EPA establish a program to monitor specified unregulated contaminants every five years. EPA published the first Unregulated Contaminant Monitoring Rule (UCMR 1) in the Federal Register on September 17, 1999 (64 FR 50556), the second (UCMR 2) on January 4, 2007 (72 FR 368), the third (UCMR 3) on May 2, 2012 (77 FR 26072), and the fourth (UCMR4) on December 20, 2016 (81 FR 92666). This action addresses SDWA requirements by establishing the terms for the fifth cycle of monitoring including a list of the new unregulated contaminants to be monitored during the UCMR 5 period of 2022 to 2026 (with sample collection expected to take place between 2023-2025). The proposed rule, published on March 11, 2021, fulfilled a key commitment in 'EPA's 2019 Per- and Polyfluoroalkyl Substances (PFAS) Action Plan' by proposing the collection of more drinking water occurrence data for a broader group of 29 PFAS.

]]> Other Significant Previously Published in The Unified Agenda Final Rule Stage No No 40 CFR 141 40 CFR 142 42 U.S.C. 300f et seq. Safe Drinking Water Act Statutory Final 12/20/2021 Five years after publication of UCMR 4. SDWA section 1445; U.S.C. 300j-4. No Notice 05/30/2019 84 FR 25026 NPRM 03/11/2021 86 FR 13846 Final Rule 12/00/2021 . No No Federal Local State Tribal No No No No Brenda Bowden 2040 Office of Water OW 513 569-7961 bowden.brenda@epa.gov Mail Code 140, 26 West Martin Luther King Drive, Cincinnati OH 45268 Melissa Simic 2040 Office of Water OW 513 569-7864 simic.melissa@epa.gov 26 West Martin Luther King Drive, Cincinnati OH 45268