Introduction
Aqueous Film-Forming Foam (AFFF), once considered essential for combating fuel-based fires, is now at the center of one of the fastest-growing mass tort litigations in the United States. Thousands of lawsuits allege that exposure to toxic “forever chemicals” known as PFAS has caused serious health conditions, including multiple forms of cancer.
As litigation expands nationwide, claims from firefighters, military personnel, and communities exposed through contaminated water are shaping what could become one of the largest environmental liability cases in U.S. history.
What Is AFFF and Why Is It Dangerous?
AFFF is a synthetic firefighting foam widely used since the 1960s by the military, airports, and fire departments to suppress flammable liquid fires.
The issue lies in its chemical composition: AFFF contains PFAS (per- and polyfluoroalkyl substances), which are highly persistent in both the human body and the environment.
These chemicals do not break down over time and can accumulate, leading to long-term exposure risks—even years after initial contact.
Alleged Health Risks Linked to PFAS Exposure
Scientific studies and litigation filings have linked PFAS exposure to a growing list of serious health conditions. Plaintiffs in AFFF lawsuits commonly allege:
- Kidney cancer
- Testicular cancer
- Thyroid cancer and disease
- Liver cancer
- Ulcerative colitis
Research suggests PFAS exposure may increase cancer risk and other systemic health effects, particularly among firefighters and individuals exposed through contaminated drinking water.
Who Is Filing AFFF Lawsuits?
The litigation is being driven by several key groups:
- Firefighters & First Responders exposed during training and emergency response
- Military Personnel exposed on bases where AFFF was heavily used
- Communities & Individuals exposed through contaminated groundwater and drinking water
Exposure frequently occurred at airports, military bases, and training facilities, where AFFF use was routine for decades.
The Scale of the Litigation
The AFFF multidistrict litigation (MDL No. 2873), centralized in South Carolina, has rapidly expanded:
- Over 15,000 active lawsuits as of early 2026
- One of the largest environmental mass torts in U.S. history
- Continued growth as new claims are filed nationwide
Bellwether trials are expected to play a key role in determining liability and potential settlement values.
Key Defendants in AFFF Litigation
Major chemical manufacturers are named in ongoing lawsuits, including:
- 3M
- DuPont
- Chemours
- Tyco Fire Products
Plaintiffs allege these companies knew about the risks associated with PFAS exposure but failed to adequately warn users.
Settlement Outlook & Legal Momentum
While large-scale personal injury settlements have not yet been finalized, the litigation shows strong momentum:
- Billions already paid in water contamination settlements
- Ongoing discussions around global resolution
- Estimated individual claim values vary widely depending on injury and exposure history
The outcome of upcoming bellwether trials could significantly shape settlement frameworks moving forward.
Why This Litigation Matters
The AFFF lawsuits represent more than individual injury claims, they highlight:
- Long-term environmental contamination
- Corporate accountability for chemical exposure
- Expanding liability tied to PFAS across industries
As regulatory scrutiny increases and scientific evidence evolves, AFFF litigation is expected to continue expanding.
Conclusion
AFFF firefighting foam litigation is rapidly becoming a cornerstone of PFAS-related legal action in the U.S. With thousands of claims already filed and more expected, this mass tort represents a critical intersection of environmental law, public health, and product liability.
For law firms, this is a high-growth docket with strong indicators of long-term litigation viability.
For firms evaluating the AFFF docket, the opportunity is not just in case volume, but in building a sustainable, data-driven acquisition strategy around emerging mass torts. Summit Edge Legal partners with plaintiff firms to identify high-value opportunities, refine targeting, and optimize campaigns for more consistent intake of qualified claimants. Ready to learn how your firm can grow with the AFFF litigation landscape? Click the link below or message us to start the conversation.