Last week, the U.S. Environmental Protection Agency (EPA) published a proposed National Primary Drinking Water Regulation for Per- and Polyflouroalkyl substances (PFAS) in the federal register. WateReuse Association members that supply recycled water for potable use will need to comply with these new regulations. WateReuse will be engaging members to develop a set of comments ahead of the May 30 deadline. If you have comments or concerns about how the proposed drinking water regulations will impact water reuse and recycling projects, please reach out to Aliza Furneaux. As previously reported, the proposed rule sets the first-ever legally enforceable Maximum Contamination Levels (MCLs) for six PFAS in drinking water. The rule proposes regulating: - PFOA and PFOS with an MCL of 4 parts per trillion (ppt) for each individually
- PFHxS, PFNA, PFBS, and HFPA-DA (GenX) as a mixture with the MCL at 1.0 (unitless) Hazard Index
Following the 60-day public comment period, the EPA anticipates finalizing the rule by the end of 2023. Once final, drinking water systems will have 3 years to comply with the new MCLs. |