Wisconsin moves to bring PFAS limits in line with contested federal standards

By Danielle Kaeding | Wisconsin Public Radio | October 3, 2025

Read the full article by Danielle Kaeding (Wisconsin Public Radio)

“Environmental advocates are urging state regulators to bring Wisconsin’s PFAS standards in line with federal drinking water standards despite an ongoing legal challenge to the federal rules.

The Wisconsin Department of Natural Resources held a public hearing Thursday on its proposed rule to mirror PFAS standards set by the Environmental Protection Agency last year.

The EPA issued a rule that set individual limits for two of the most commonly studied chemicals, PFOA and PFOS, at 4 parts per trillion. The agency also set standards at 10 parts per trillion for three other chemicals: PFNA, PFHxS and GenX chemicals. And it set a limit on a mix of four PFAS substances.”

This content provided by the PFAS Project.