From Guidance to Enforcement: The EPA Gets Serious on PFAS
For decades, U.S. EPA PFAS policy was characterized more by voluntary agreements and guidance documents than by formal enforcement actions. That era is ending. The EPA’s PFAS Strategic Roadmap (2021) explicitly committed to leveraging all available enforcement authorities against PFAS contamination. Since then, enforcement activity has accelerated dramatically—with major consent decrees, Section 7003 imminent hazard orders, and multi-million dollar civil penalties reshaping the compliance landscape for industries that manufacture, use, or discharge PFAS.
CERCLA Designation and Its Enforcement Implications
The EPA’s designation of PFOA and PFOS as CERCLA hazardous substances in 2024 was the single most consequential regulatory action in PFAS enforcement history. CERCLA designation triggers strict liability—meaning potentially responsible parties (PRPs) can be held liable for cleanup costs regardless of fault or negligence. It activates EPA’s ability to issue unilateral administrative orders requiring PRPs to conduct investigations and cleanups, and it establishes federal cost recovery authority when EPA conducts cleanups directly.
Within months of the CERCLA designation taking effect, EPA issued its first PFOA/PFOS-based enforcement notices to facility operators near contaminated sites. Industrial facilities with documented PFAS releases into groundwater became primary targets. The Agency has explicitly stated it will pursue cost recovery against parties who released PFAS prior to the hazardous substance designation, creating retroactive liability concerns for chemical manufacturers, users, and waste handlers.
Notable Consent Agreements and Consent Decrees
Several landmark consent agreements have defined the PFAS enforcement landscape. The 2022 consent decree with 3M—part of broader PFAS litigation settlement discussions—established remediation obligations at multiple contaminated sites. DuPont and its spinoff companies (Chemours, Corteva) entered a $4 billion settlement in 2021 resolving PFAS claims from public water systems, with funds directed to infrastructure upgrades and testing programs.
At the facility level, EPA has issued Clean Water Act enforcement orders against industrial dischargers who released PFAS into surface waters or municipal sewer systems without adequate pretreatment. Textile manufacturers, metal plating operations, and semiconductor fabrication facilities have all received PFAS-related compliance schedules under National Pollutant Discharge Elimination System (NPDES) permits. The anticipated EPA effluent guideline for PFAS dischargers—expected by 2025—will formalize numeric discharge limits that will drive the next wave of enforcement activity.
State Enforcement Programs Filling Federal Gaps
States with comprehensive PFAS regulations—including Michigan, New Jersey, New York, and Minnesota—have developed independent enforcement programs that in some cases exceed federal activity in scope and speed. Michigan’s PFAS Action Response Team (MPART) has issued enforcement orders to hundreds of facilities, including mandatory testing obligations and interim remedial measures at sites with confirmed PFAS impacts. Minnesota’s Attorney General has pursued direct actions against 3M, resulting in the landmark $850 million settlement that established a trust fund for water system remediation throughout the state.
The convergence of federal and state enforcement creates a complex compliance environment for PFAS-using industries. Companies operating in multiple states must track diverse and often inconsistent enforcement requirements, while facing the prospect of simultaneous federal and state enforcement actions for the same contamination events. Legal experts anticipate significant enforcement-driven litigation in the coming decade as regulatory agencies seek cost recovery from responsible parties across the PFAS supply chain.