A host of EPA clean water and drinking water regulations stand to be re-evaluated in the second Trump administration, with wetlands and PFAS regulations among the most likely to get a closer look.
Project 2025 calls for the Environmental Protection Agency to repeal the Biden administration’s waters of the US, or WOTUS, rule, its Clean Water Act Section 401 state certification rule, and to “revisit” the designation of per- and polyfluoroalkyl substances (PFAS) as “hazardous substances” under federal law, and revise PFAS groundwater cleanup regulations.
The Section 401 rule effectively gives states veto power over large interstate infrastructure projects that could pollute waters within their borders.
“My general view is that there will be broad implications for the programs under the Office of Water with the Trump administration,” especially Biden’s WOTUS, 401, and PFAS regulations, said Steven Miano, shareholder at Hangley Aronchick Segal Pudlin & Schiller in Philadelphia.
The big deregulation