Why AFFF litigation is a defining mass tort
Aqueous Film-Forming Foam (AFFF) has been a cornerstone of firefighting operations since the 1960s, used extensively by military installations, municipal fire departments, commercial airports, and industrial facilities to suppress petroleum-based fires. However, the per- and polyfluoroalkyl substances (PFAS) that make AFFF effective are now recognized as dangerous "forever chemicals" that persist in the environment and accumulate in the human body, causing cancer and other serious health conditions.
AFFF litigation has become one of the most significant mass tort actions in the United States, with thousands of personal injury and wrongful death claims consolidated in MDL No. 2873 in the District of South Carolina. For personal injury attorneys, AFFF cases present a major litigation opportunity -- particularly as scientific evidence continues to strengthen the connection between PFAS exposure and multiple types of cancer.
AFFF litigation represents one of the most significant environmental mass torts of this generation. Firms that invest early in understanding the science, building case inventories, and developing expertise will be positioned for substantial results as the litigation matures.
Understanding PFAS: the forever chemicals
PFAS are a family of over 14,000 synthetic chemicals manufactured since the late 1940s. They are called "forever chemicals" because they do not break down naturally in the environment and can persist indefinitely. The carbon-fluorine bonds in PFAS are among the strongest in organic chemistry, which gives AFFF its fire-suppressing properties but also makes these chemicals extraordinarily persistent.
How AFFF exposure occurs
Exposure to PFAS from AFFF occurs through multiple pathways: direct skin contact during firefighting and training exercises, inhalation of foam mist and vapors, ingestion of contaminated drinking water, and consumption of food grown near contaminated areas. The biological half-life of PFOS in humans is estimated at 5.4 years, meaning even after exposure ends, it takes more than five years for the body to eliminate just half of the accumulated chemical.
EPA and IARC classifications
In November 2023, IARC classified PFOA as a Group 1 "carcinogenic to humans" agent, and PFOS as a Group 2B "possibly carcinogenic" agent. The EPA set enforceable maximum contaminant levels at 4 parts per trillion in 2024 -- essentially declaring no level of PFOS or PFOA in drinking water is safe.
How AFFF contaminated groundwater across the country
The Department of Defense is the largest user of AFFF in the United States. MIL-SPEC requirements mandated PFAS-containing AFFF for fire suppression since the 1960s. Regular training exercises released millions of gallons of AFFF directly into the ground, where PFAS migrated into groundwater aquifers. The DoD has identified PFAS contamination at over 700 military installations.
Airport and fire training contamination
Commercial and military airports used AFFF extensively for aircraft rescue and firefighting operations. Municipal and industrial fire training facilities regularly used AFFF in live-fire exercises, with chemicals leaching into soil and groundwater over decades. According to the Environmental Working Group, PFAS contamination has been documented in drinking water systems serving over 110 million Americans.
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View AFFF LeadsMDL 2873: the AFFF multidistrict litigation
The AFFF MDL, officially captioned In re: Aqueous Film-Forming Foams Products Liability Litigation, MDL No. 2873, is pending in the District of South Carolina before Judge Richard M. Gergel. As of early 2026, it includes over 9,000 pending cases. The MDL consolidates both personal injury claims and water contamination claims brought by municipalities.
Bellwether trials
The court has established a bellwether process for selecting representative cases. The water provider bellwether process has already produced significant settlements, and the personal injury bellwether process is advancing. These early trials establish benchmarks that influence the resolution of the broader docket.
AFFF manufacturers and corporate defendants
3M Company
Original developer and largest AFFF manufacturer using PFOS. Lightwater brand from the 1960s through 2002. $10.3 billion water settlement. Exiting all PFAS production by end of 2025.
DuPont / Chemours
Manufactured PFOA at Washington Works plant. 2015 Chemours spin-off assumed PFAS liabilities. $4 billion cost-sharing agreement between DuPont, Chemours, and Corteva.
Tyco Fire Products / Chemguard
Manufactured and sold AFFF products to military installations and fire departments. Now part of Johnson Controls. Significant MDL defendant.
Other defendants
Kidde-Fenwal, National Foam, Buckeye Fire Equipment, and other manufacturers in the AFFF supply chain. Defendant pool continues to expand.
3M's $10.3 billion AFFF settlement
In June 2023, 3M reached a landmark settlement of $10.3 billion to resolve water provider claims in MDL 2873 -- one of the largest environmental settlements in history. Payments are to be made over 13 years. Importantly, this settlement does not cover personal injury claims. Individual plaintiffs alleging cancer retain their right to pursue separate claims.
The massive water provider settlement confirms the financial magnitude of PFAS liability and suggests 3M recognizes its exposure on personal injury claims is substantial. In December 2022, 3M announced it would stop manufacturing all PFAS by end of 2025 -- widely interpreted as an acknowledgment that PFAS liability poses existential financial risks.
Qualifying cancers and conditions for AFFF claims
Cancers with strong causation evidence
- Kidney cancer (renal cell carcinoma): One of the most well-supported PFAS-cancer associations, backed by C8 Science Panel findings and IARC classification.
- Testicular cancer: The C8 Science Panel found a "probable link" between PFOA exposure and testicular cancer.
- Bladder cancer: Firefighter studies show elevated bladder cancer rates associated with PFAS exposure.
Cancers with substantial supporting evidence
- Prostate cancer: Several studies found associations in highly exposed occupational groups.
- Liver cancer: PFAS accumulate in the liver; animal studies strongly support carcinogenicity.
- Pancreatic cancer: Emerging evidence links PFAS exposure with dose-response relationships.
Non-cancer conditions
- Thyroid disease: C8 Science Panel found "probable link" to PFOA exposure.
- Ulcerative colitis: Consistently associated with PFAS in exposed populations.
- Immune system effects: Reduced vaccine efficacy and immunosuppression.
- Reproductive effects: Including preeclampsia, reduced fertility, and developmental effects.
- High cholesterol: Strong epidemiological support as one of the earliest identified effects.
Who qualifies for an AFFF lawsuit
Career & volunteer firefighters
Most directly exposed population with significantly elevated PFAS blood levels. IAFF formally recognizes PFAS as an occupational hazard.
Military personnel
Aircraft rescue firefighters, crash crew members, fuel handlers, and personnel involved in fire training across all branches.
Airport workers
ARFF personnel, maintenance workers, and others who worked near areas where AFFF was used or stored at military and commercial airports.
Industrial workers
Workers at refineries, chemical plants, and facilities that used AFFF for fire suppression, both direct users and nearby workers.
Community members
Residents near military bases, airports, and fire training facilities where AFFF contaminated local groundwater and drinking water.
Veterans with AFFF exposure
Can sue private manufacturers despite Feres doctrine. Eligible for VA disability benefits in addition to civil litigation.
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Start Your CampaignSettlement values and verdict projections
| Claim type | Settlement range | Key factors |
|---|---|---|
| Kidney / testicular cancer | $500K -- $2M+ | Strongest causation evidence, firefighter exposure |
| Bladder / prostate cancer | $300K -- $1M | Substantial epidemiological support |
| Liver / pancreatic cancer | $200K -- $1M | Growing evidence, dose-response data |
| Wrongful death | $500K -- $2M+ | Highest values, strong exposure evidence |
Evidence requirements and causation strategy
Building a strong AFFF case requires systematic evidence collection: employment records, training logs showing AFFF use, residency records for community cases, water testing data showing PFAS contamination, and PFAS blood serum testing results. Corporate knowledge evidence from MDL discovery shows manufacturers knew about PFAS health risks for decades.
Medical causation
General causation is supported by C8 Science Panel findings, IARC classifications, EPA assessments, and epidemiological literature. Specific causation requires individualized expert analysis considering exposure history, PFAS blood levels, latency period, and alternative risk factors. Courts apply the Daubert standard to evaluate admissibility.
Regulatory landscape: EPA actions on PFAS
In April 2024, the EPA finalized enforceable MCLs for six PFAS compounds at 4 parts per trillion -- essentially zero. The EPA has designated PFOA and PFOS as hazardous substances under CERCLA (Superfund). Numerous states have enacted their own PFAS regulations, often more stringent than federal standards. These regulatory actions provide additional support for PFAS toxicity arguments in litigation.
The future of AFFF litigation
Ongoing research is likely to establish additional cancer-PFAS connections. Replacement PFAS chemicals used in newer AFFF formulations are also emerging as health concerns and may generate future litigation waves. The outcomes of personal injury bellwether trials in MDL 2873 will significantly shape settlement discussions and case values.
Cross-referencing related practice areas
AFFF litigation pairs well with other environmental and toxic exposure mass torts. Firms active in this area may benefit from diversifying into Camp Lejeune water contamination, Roundup cancer claims, or Ozempic gastroparesis for revenue stability and a broader client base.
