NY AG Sues 3M, DuPont Over PFAS Contamination in $2B Lawsuit

3 min readSources: Courthouse News

On July 9, 2026, NY Attorney General sued 3M, DuPont, Chemours, and Corteva over PFAS pollution.

Why it matters: This lawsuit signals rising legal and compliance risks for chemical manufacturers amid growing PFAS regulatory enforcement. Legal teams must prepare for potential financial liability and reputational impact from state-led PFAS claims.

  • Lawsuit filed July 9, 2026, in Albany state court by NY AG Letitia James.
  • Accuses 3M, DuPont, Chemours, and Corteva of knowingly selling PFAS products while hiding health risks.
  • Seeks funding for statewide environmental cleanup and mandatory consumer warnings about PFAS dangers.
  • Follows a $2 billion 2025 New Jersey settlement and a $450 million EPA-Chemours settlement in June 2026.

On July 9, 2026, New York Attorney General Letitia James filed a lawsuit in Albany state court against 3M, DuPont de Nemours, The Chemours Company, and Corteva. The suit alleges these companies knowingly manufactured and sold products containing per- and polyfluoroalkyl substances (PFAS), often called “forever chemicals” due to their persistence in the environment.

The complaint claims the defendants concealed the serious health risks of PFAS exposure, which include cancer, thyroid disease, and developmental problems in children, while profiting from their sales. It seeks financial responsibility for comprehensive water and soil remediation across New York and mandates that these companies provide transparent consumer warnings regarding PFAS in their products.

Attorney General James emphasized the public health stakes: “Big chemical companies like 3M and DuPont deliberately sold toxic products that polluted New Yorkers’ water and threatened our communities’ health for decades, all while hiding the truth from the public.” The case highlights issues of corporate accountability and environmental justice.

This action follows a 2025 New Jersey settlement where DuPont, Chemours, and Corteva agreed to pay up to $2 billion over PFAS contamination. In June 2026, the Environmental Protection Agency secured a $450 million settlement with Chemours related to PFAS pollution remediation in New York and other states, including mandated alternative drinking water supplies.

For legal and compliance teams, the lawsuit poses significant implications: mounting state-level enforcement may lead to costly remediation obligations, expanded disclosure requirements, and greater scrutiny of supply chain liabilities involving PFAS. It underscores an emerging wave of litigation and regulatory risks chemical manufacturers face nationwide.

By the numbers:

  • $2 billion — New Jersey PFAS settlement with DuPont, Chemours, and Corteva in 2025
  • $450 million — EPA settlement with Chemours over PFAS pollution in 2026
  • July 9, 2026 — Date NY AG filed lawsuit against 3M, DuPont, Chemours, and Corteva

What's next: Upcoming: Watch for developments in the Albany court case and potential legislative actions on PFAS regulation in New York later in 2026.