Wisconsin Court Voids State’s ‘Hazardous Substance’ Listing For PFAS

A Wisconsin state appeals court in a split decision has struck down state regulators’ ability to require investigation and cleanup of PFAS and other emerging contaminants as “hazardous substances” under state law unless they issue a formal rule, but the dissenting judge charges the ruling upends legal interpretations of the law that have stood for more than 45 years. The Wisconsin Court of Appeals ruled March 6 against the Wisconsin Department of Natural Resources (DNR) in Wisconsin Manufacturers and Commerce,...