Who qualifies

UPDATED FEB 2026

AFFF Firefighter Cancer Claims

Part of the AFFF Firefighting Foam investigation

The short answer

Firefighters have the highest documented PFAS blood levels of any occupational group and form the core of the AFFF personal injury litigation. Municipal, airport, and military firefighters who trained with AFFF absorbed PFAS through skin contact and inhalation of foam mist, often for years or decades without protective equipment.

NIOSH studies show elevated cancer rates among firefighters, and many states have enacted presumptive cancer laws that create favorable conditions for firefighter AFFF claims.

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Firefighters: The Most Exposed Population

Firefighters represent the population with the most direct, intense, and prolonged exposure to AFFF and its PFAS components. Municipal fire departments, airport fire crews, and military crash rescue units used AFFF in routine training exercises — often multiple times per month — for decades. During training, firefighters waded through pools of foam, sprayed it from hoses at close range, and cleaned up foam residue by hand, all without the chemical-resistant personal protective equipment (PPE) that would be required for handling known toxic substances. PFAS were absorbed through the skin, inhaled as foam mist, and inadvertently ingested.

Studies consistently show that firefighters have PFAS blood concentrations 2 to 10 times higher than the general population. A 2022 study published in the International Journal of Environmental Research and Public Health found that career firefighters had significantly elevated levels of PFOS, PFHxS, and other PFAS compounds compared to non-firefighter controls, with the highest levels found in those with the most years of AFFF-related training. The National Institute for Occupational Safety and Health (NIOSH) has identified elevated cancer rates among firefighters, with PFAS exposure from AFFF recognized as a significant contributing factor.

The occupational exposure pathway for firefighters is particularly well-documented, which strengthens their legal claims. Fire department training records, employment histories, and department protocols for AFFF use provide clear evidence of exposure timing, frequency, and duration. Many departments maintained logs of training exercises that can be matched to individual firefighters' work schedules. This level of documentation is a significant advantage in establishing causation.

Presumptive Cancer Laws and Firefighter Protections

Many states have enacted "presumptive cancer" laws that presume certain cancers diagnosed in firefighters are occupationally caused, shifting the burden of proof from the firefighter to the employer or insurer. While these laws primarily affect workers' compensation claims against fire departments and municipalities, they reflect the legislative recognition that firefighters face elevated cancer risks from occupational exposures including AFFF.

The AFFF product liability litigation is separate from workers' compensation — it targets the manufacturers of AFFF and PFAS (3M, DuPont, Tyco, BASF), not the fire departments that used the products. Firefighters can pursue both workers' compensation benefits and AFFF product liability claims simultaneously. The product liability claims allege that manufacturers knew AFFF was toxic and failed to warn firefighters, fire departments, or the public about the health risks.

Firefighters considering AFFF claims should gather their employment records showing dates of service, training records documenting AFFF use, any PFAS blood testing results, and medical records for their diagnosed condition. Department records of AFFF purchases and training exercises provide supporting evidence. Fire union representatives and department safety officers may also be able to provide relevant documentation.

Research & evidence

Scientific Evidence

meta-analysis

Meta-Analysis of PFAS Exposure and Cancer Risk: Kidney and Testicular Cancer

Mastrantonio M, Bai E, Uccelli R, Cordiano V, Screpanti A, Corigliano P. (2023). La Medicina del Lavoro

Key findings

  • Relative risk of 1.74 for kidney cancer among individuals with high PFAS exposure compared to low-exposure controls
  • Relative risk of 2.22 for testicular cancer among individuals with high PFAS exposure — the strongest relative risk of any PFAS-cancer association
  • Dose-response relationship demonstrated: higher PFAS blood levels correlated with progressively higher cancer risk
  • Results consistent across multiple study designs and populations, strengthening the causal inference
retrospective

"The Devil They Knew": Industry Knowledge of PFAS Dangers Since 1970

Brennan NM, Evans AT, Fritz MK, Peak SA, von Holst HE. (2023). Annals of Global Health

Key findings

  • PFAS manufacturers knew about the persistence and toxicity of their products as early as 1970 — more than 50 years before widespread public awareness
  • 3M conducted internal studies showing PFAS bioaccumulation in worker blood at 1,000 times normal levels and animal studies showing tumor formation, then classified results as confidential
  • Manufacturers used trade secret protections and proprietary research agreements to prevent damaging findings from reaching regulators or the public
  • The pattern of corporate concealment parallels the tobacco and asbestos industries and supports punitive damages claims based on willful and malicious conduct
cohort

C8 Science Panel: Probable Link Evaluations for PFOA-Associated Diseases

Fletcher T, Savitz D, Steenland K. (2012). Environmental Health Perspectives

Key findings

  • Determined "probable link" between PFOA exposure and six diseases: kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, high cholesterol, and pregnancy-induced hypertension
  • Study population of 69,000 residents made it one of the largest PFAS health studies ever conducted, providing exceptional statistical power
  • Findings have been cited in virtually every subsequent PFAS lawsuit and regulatory action worldwide
  • The "probable link" standard — requiring more than just association but less than definitive proof — was a negotiated scientific threshold that has become the benchmark for PFAS causation evidence

FAQ

Frequently Asked Questions

36 QUESTIONS

The primary categories of eligible plaintiffs include: firefighters (municipal, airport, military, or industrial) who handled AFFF during training or fire suppression; military personnel stationed at bases where AFFF was used or stored (the DoD has identified 455+ contaminated installations); military families who lived on or near contaminated bases; community residents whose drinking water was contaminated by PFAS from nearby military bases, airports, or fire training facilities; and industrial workers at PFAS manufacturing plants. Linked conditions include kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, liver damage, non-Hodgkin lymphoma, and high cholesterol. Attorneys handle these cases on contingency — fee terms vary by attorney.

Dive deeper

Related Guides

7 GUIDES

The full investigation

Part of the AFFF Firefighting Foam Investigation