New Hampshire Municipalities Sued 3M and DuPont
Keene and Londonderry filed a class-action lawsuit alleging that the manufacturers knowingly exposed firefighters to PFAS.
Updated on Sept. 29, 2026 in Philanthropy
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The City of Keene and the Town of Londonderry have launched a federal class-action lawsuit against 3M and DuPont. The complaint alleges that the companies knowingly exposed firefighters to harmful PFAS chemicals through protective gear.
Why it matters
The lawsuit claims manufacturers failed to warn fire departments about the health risks of PFAS used in gear. It further alleges that exposure to these substances increases cancer risks for those who wear the equipment.
Two New Hampshire municipalities have initiated a federal class-action lawsuit against chemical manufacturers. The litigation follows allegations regarding PFAS usage in protective fabrics and moisture barriers.
The players
3M
This is a diversified global manufacturing company that produces a wide range of industrial and consumer products.
DuPont
This is a multinational chemical corporation known for its innovation in science-based products and industrial materials.
City of Keene
This is a city in New Hampshire that serves as a plaintiff in the class-action lawsuit.
Town of Londonderry
This is a municipality in New Hampshire that joined the federal class-action litigation.
The details
According to the complaint, manufacturers incorporated PFAS into gear components such as protective fabrics and water-repellent treatments. The suit contends that these chemicals can degrade into toxic particles when the equipment is subjected to high heat.
Timeline
September 29, 2026: The lawsuit was reported following its filing in federal court.
Market Landscape
This litigation follows a pattern set by the broader nationwide multidistrict litigation over PFAS contamination. It represents an escalation in how local governments are seeking to hold major industrial suppliers accountable for long-term health risks.
Fire departments and local taxpayers may face long-term operational and financial impacts as gear safety concerns continue to evolve. Residents should monitor updates from municipal agencies regarding potential changes to fire safety procurement and equipment standards.
The takeaway
The case highlights the growing scrutiny regarding the chemical composition of high-performance protective gear. Firefighting personnel and municipal leaders are increasingly seeking accountability for the long-term health hazards associated with industrial materials.
Further reading
For more information on legal and civic efforts in the region, visit the New Hampshire philanthropy section.
Source note: This article includes information reported by The Cool Down.
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