Tuesday, March 14, 2023, the EPA announced a new, proposed National Primary Drinking Water Regulation (NPDWR) to establish legally enforceable levels, called Maximum Contaminant Levels (MCLs), for six PFAS in drinking water. PFOA and PFOS as individual contaminants, and PFHxS, PFNA, PFBS, and HFPO-DA (commonly referred to as GenX Chemicals) as a PFAS mixture. The Proposed Maximum Contaminant Level (MCL) is 4.0 parts per trillion for each component. All City of Prescott water wells that are currently used for production of drinking water are in compliance with these proposed levels. EPA anticipates finalizing the regulation by the end of 2023.
For more information about the public comment process, please refer to the EPA website at www.regulations.gov under Docket ID: EPA-HQ-OW-2022-0114. Information on submitting comments to EPA dockets can be found here.
EPA will be holding two informational webinars about the proposed PFAS NDPWR on March 16, 2023, and March 29, 2023. The webinars will be similar, with each intended for specific audiences. Registration is required to attend. The webinar recordings and presentation materials will be made available following the webinars at this website. For questions related to the public webinars, contact PFASNPDWR@epa.gov.
- March 16, 2023 (2:00-3:00 pm Eastern Time) Webinar Registration: General Overview of Proposed PFAS NPDWR
- March 29, 2023 (2:00-3:00 pm Eastern Time) Webinar Registration: Technical Overview of Proposed PFAS NPDWR
The City will continue to monitor this development, and will continue to test wells quarterly. For updated information, go to the City website Prescott-az.gov, click on PFAS Resource Center from the home page.