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Regulatory Authority PFAS Hazardous Substances

MG+M The Law Firm

Wisconsin Supreme Court Ruling on PFAS Leaves Businesses Vulnerable and Overextends Agency Power

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In a contentious 5–2 decision, the Wisconsin Supreme Court has dealt an unprecedented blow to the state’s business and manufacturing sector by ruling that the Department of Natural Resources (DNR) can force cleanup of PFAS...more

Stinson LLP

Wisconsin Supreme Court Upholds State's Authority to Regulate PFAS Without Formal Rulemaking

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On June 24, 2025, the Wisconsin Supreme Court rejected a challenge to the authority of the Wisconsin Department of Natural Resources (WDNR) to compel the cleanup of perfluoroalkyl and polyfluoroalkyl (PFAS) substances under...more

Pillsbury - PFAS Observer

The End of Chevron Deference Could Spell Trouble for EPA’s PFAS “Hazardous Substance” Rule

A recent Supreme Court ruling could further jeopardize EPA’s PFAS hazardous substance designation, as the agency is attempting to advance a novel use of delegated legislative authority to further regulate PFAS chemicals....more

Lathrop GPM

EPA’s ‘Forever Chemicals’ Rule at Risk Without Chevron Deference

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The US Supreme Court’s June 28 decision to end judicial deference to agencies’ reasonable interpretations of laws comes at a pivotal time for new regulations related to “forever chemicals”—per- and polyfluoroalkyl substances...more

BCLP

Federal PFAS Development: Preliminary Effluent Guidelines Program Plan 15

BCLP on

The United States Environmental Protection Agency (“EPA”) has outlined additional steps that it plans to take to investigate and in some cases regulate the discharge of per- or polyfluoroalkyl compounds (“PFAS”) in certain...more

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