Skip to main content
    DEFINITIVE GUIDELast updated: 2026-06-04

    AFFF Firefighting Foam Lawsuit: The Complete Guide

    Aqueous Film-Forming Foam (AFFF) is a firefighting suppressant developed in the 1960s by the U.S. Navy and 3M. It is highly effective at extinguishing hydrocarbon fuel fires—and it contains per- and polyfluoroalkyl substances (PFAS), a class of human-made chemicals that do not break down in the environment and have been linked to multiple types of cancer. For decades, AFFF was used extensively on military bases, at airports, in fire training facilities, and by municipal fire departments across the country. As a result, hundreds of thousands of firefighters, military personnel, and residents near contaminated water sources have been exposed to PFAS at levels far exceeding safe limits. Tens of thousands of lawsuits have been consolidated into Multidistrict Litigation MDL No. 2873 in the District of South Carolina, involving firefighter plaintiffs, military service members, and individuals exposed through contaminated drinking water. This comprehensive guide covers everything you need to know about AFFF firefighting foam lawsuits, including eligibility criteria, scientific evidence, settlement amounts, the MDL timeline, and how to file a claim.

    Overview

    Aqueous Film-Forming Foam (AFFF) is a firefighting foam concentrate used to extinguish Class B flammable liquid fires. Developed in the 1960s by the U.S. Navy in collaboration with 3M, AFFF works by forming a thin aqueous film that smothers fuel fires and prevents re-ignition. The key ingredient that makes AFFF so effective is its high concentration of per- and polyfluoroalkyl substances (PFAS), specifically perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). PFAS are known as "forever chemicals" because their carbon-fluorine bonds are among the strongest in organic chemistry, making them extremely resistant to environmental degradation. These chemicals bioaccumulate in human tissue and have been detected in the blood of 98% of Americans tested by the Centers for Disease Control and Prevention. The health consequences of PFAS exposure have been documented in hundreds of peer-reviewed studies. The International Agency for Research on Cancer (IARC) has classified PFOA as "carcinogenic to humans" (Group 1) and PFOS as "possibly carcinogenic" (Group 2B). In 2022, the National Academies of Sciences, Engineering, and Medicine published clinical guidance recommending PFAS blood testing and cancer screening for individuals with elevated exposure levels. Litigation against AFFF manufacturers—including 3M, DuPont, Chemours, and others—has been consolidated in MDL No. 2873 (In re: Aqueous Film-Forming Foams Products Liability Litigation) in the District of South Carolina. As of June 2026, over 8,000 individual lawsuits are pending, with bellwether proceedings completed and major settlements reached with 3M ($10.3 billion) and DuPont/Chemours ($1.19 billion). Additional cases against remaining defendants continue to be litigated.

    Litigation Timeline

    1960s

    AFFF (Aqueous Film-Forming Foam) is developed by the U.S. Navy in collaboration with 3M. The foam contains high concentrations of PFOS and PFOA, which provide superior fire-suppression capabilities but are later found to be extremely persistent environmental contaminants.

    1990s–2000s

    Scientific awareness of PFAS toxicity grows. 3M discovers PFOS in human blood samples globally and initiates internal studies on health effects. By 2000, 3M announces a phase-out of PFOS production. EPA begins investigating PFOA and PFOS contamination at military bases and industrial sites.

    2016

    First wave of AFFF lawsuits is filed against 3M, DuPont, and other manufacturers by individuals diagnosed with cancer after occupational exposure to PFAS-containing firefighting foams. Cases allege failure to warn about health risks and contamination of drinking water supplies.

    December 2018

    The Judicial Panel on Multidistrict Litigation establishes <strong>MDL No. 2873</strong> (In re: Aqueous Film-Forming Foams Products Liability Litigation) in the District of South Carolina, before Judge Richard M. Gergel, to coordinate all federal AFFF personal injury and water contamination lawsuits.

    2021–2023

    Bellwether trials proceed in MDL 2873. Multiple cases produce mixed verdicts, including a $50 million verdict against 3M and DuPont in 2021 for water contamination in Alabama. These bellwether outcomes provide settlement frameworks for the broader MDL docket.

    June 2023

    3M announces a <strong>$10.3 billion settlement</strong> with public water systems to resolve PFAS drinking water contamination claims. The settlement is structured over 13 years and covers water systems that have detected PFAS at any level. Separately, DuPont and Chemours agree to a $1.19 billion settlement.

    2024–2025

    Individual personal injury claims (firefighters and military personnel with cancer) continue through MDL proceedings. Settlement frameworks are negotiated for cancer cases against settling defendants. EPA issues new PFAS drinking water Maximum Contaminant Levels (MCLs) requiring water systems to filter PFOA and PFOS to near-zero levels.

    June 2026

    MDL 2873 continues with remaining defendants. Individual personal injury cases against 3M and DuPont/Chemours are being resolved through settlement processes. New claims continue to be filed as awareness of PFAS health effects grows. Claimants are advised to consult counsel promptly given varying state statute of limitations deadlines.

    Scientific Evidence

    The scientific evidence linking PFAS exposure to adverse health outcomes is extensive and continues to grow. The following represents key research and findings relevant to AFFF litigation. C8 Health Project (2005–2013) — Following a class action settlement regarding PFOA contamination from DuPont's Washington Works plant in West Virginia, the C8 Health Project studied approximately 70,000 residents exposed to PFOA in drinking water. The subsequent C8 Science Panel concluded there is a probable link between PFOA exposure and kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, pregnancy-induced hypertension, and high cholesterol. NIOSH Firefighter Cancer Studies — The National Institute for Occupational Safety and Health (NIOSH) has conducted multiple studies examining cancer incidence among firefighters. A landmark 2023 study found that firefighters have significantly elevated rates of digestive, oral, respiratory, and urinary cancers compared to the general population, with PFAS exposure from AFFF identified as a key contributing factor. ATSDR PFAS Exposure Assessments — The Agency for Toxic Substances and Disease Registry has conducted exposure assessments at military installations and fire training facilities where AFFF was used. These studies have documented elevated PFAS levels in the blood of firefighters and military personnel compared to the general population, with levels often 3–5 times higher than national averages. IARC Classifications — In 2023, IARC classified PFOA as Group 1 (carcinogenic to humans), PFOS as Group 2B (possibly carcinogenic), and perfluorooctanoic acid as a known cause of kidney cancer and testicular cancer specifically. Exposure Pathways — Individuals can be exposed to PFAS through multiple pathways: direct skin contact and inhalation during firefighting operations; ingestion of contaminated drinking water near military bases, airports, and fire training facilities; and consumption of food grown in PFAS-contaminated areas. PFAS have an estimated half-life of 2–8 years in humans, meaning they accumulate over time with repeated exposure. Latency Periods — Cancers linked to PFAS exposure typically develop over long latency periods, often 10–30 years from initial exposure to diagnosis. This means individuals exposed in the 1970s–2000s are still being diagnosed today, and the full public health impact may not be known for decades.

    Settlement Data & Compensation

    TierRangeCriteria
    Tier 1 — Severe / Metastatic Cancer$250,000–$750,000+Metastatic or late-stage kidney cancer, testicular cancer, pancreatic cancer, or liver cancer with poor prognosis; extensive chemotherapy, radiation, and/or surgical intervention; long and documented PFAS exposure history (15+ years in firefighting or military); strong causation evidence including PFAS blood testing above 20 ng/mL
    Tier 2 — Major Cancer$100,000–$250,000Localized kidney cancer, testicular cancer, bladder cancer, non-Hodgkin lymphoma, or thyroid cancer requiring surgical resection and adjuvant therapy; documented intermediate PFAS exposure history (5–15 years); moderately elevated PFAS blood levels with supporting epidemiological evidence
    Tier 3 — Moderate Cancer$50,000–$100,000Prostate cancer, breast cancer, ovarian cancer, Hodgkin lymphoma, or leukemia with treatment and favorable prognosis; shorter or intermittent PFAS exposure history (1–5 years); moderate PFAS blood levels; weaker direct causation linkage but plausible epidemiological association
    Tier 4 — Low-Severity / Early Stage$15,000–$50,000Early-stage or in-situ cancers with surgical treatment and excellent prognosis; minimal PFAS exposure history (limited AFFF contact or low PFAS blood levels); or cancers with weaker scientific consensus on PFAS causation (e.g., multiple myeloma, pancreatic cancer without clear PFAS link)
    Tier 5 — Pre-Cancer / Surveillance$5,000–$15,000Pre-cancerous conditions or benign tumors requiring monitoring but no active cancer treatment; documented PFAS exposure without a formal cancer diagnosis but with elevated PFAS blood levels and associated medical monitoring costs; or claimants with borderline exposure documentation

    Key Statistics

    Individual lawsuits pending in MDL No. 2873 as of mid-2026, including personal injury and water contamination claims

    8,000+

    3M settlement amount for PFAS drinking water contamination claims (June 2023), paid over 13 years to public water systems nationwide

    $10.3B

    DuPont and Chemours combined settlement for PFAS drinking water claims (2024–2025), resolving water provider lawsuits

    $1.19B

    Cancers for which IARC and scientific panels have found probable or possible links to PFAS exposure, including kidney, testicular, prostate, bladder, liver, thyroid, pancreatic, and non-Hodgkin lymphoma

    8+

    Number of PFAS chemicals identified in commerce and the environment, with PFOA and PFOS being the most studied and regulated

    12,000+

    Estimated number of Americans with PFAS detected in their drinking water at levels above the EPA's 2024 health advisory of 4 parts per trillion for PFOA and PFOS

    200M+

    Eligibility Criteria

    1

    To potentially qualify for an AFFF firefighting foam personal injury lawsuit, individuals should review the following criteria. Consultation with qualified legal counsel is necessary to determine eligibility in any specific case.

    2

    1. Worked as a firefighter (career, volunteer, or military) with documented exposure to AFFF during firefighting operations, training exercises, or equipment testing

    3

    2. Served in the U.S. military (Navy, Air Force, Army, Marine Corps, or Coast Guard) and were stationed at a facility where AFFF was used for fire training or aircraft rescue operations

    4

    3. Lived or worked near a military base, airport, or fire training facility where AFFF was used and PFAS was detected in local drinking water supplies above EPA health advisory levels

    5

    4. Been diagnosed with a cancer linked to PFAS exposure, including kidney cancer, testicular cancer, prostate cancer, bladder cancer, pancreatic cancer, liver cancer, thyroid cancer, non-Hodgkin lymphoma, Hodgkin lymphoma, leukemia, multiple myeloma, ovarian cancer, or breast cancer

    6

    5. Have medical records documenting the qualifying cancer diagnosis and treatment history

    7

    6. Maintain records or evidence documenting the duration and frequency of AFFF exposure (employment records, military service records, facility assignments, training logs, or sworn affidavits)

    8

    7. Filed within the applicable statute of limitations (deadlines vary by state, typically 1–6 years from diagnosis or discovery of the link between PFAS and the injury)

    How to File a Claim

    1

    Filing an AFFF firefighting foam lawsuit involves several stages, from initial case evaluation through MDL proceedings, settlement, or trial. The process below outlines the typical steps.

    2

    The first step is to complete a confidential case review with a legal matching service or directly with a law firm that handles AFFF MDL claims. You will be asked about your firefighting or military service history, your PFAS exposure background, your cancer diagnosis and treatment, and other relevant details. This is typically provided at no cost and without obligation.

    3

    If your case appears to meet basic eligibility criteria, you will be connected with an independent law firm that handles AFFF MDL claims. The law firm will gather your supporting documents—including military or employment records documenting AFFF exposure, medical records confirming your cancer diagnosis, and available PFAS blood testing results if applicable.

    4

    Once retained, the law firm will file a complaint on your behalf in federal court, where the case will be transferred to MDL No. 2873 in the District of South Carolina for coordinated pretrial proceedings. The defendants may include 3M, DuPont, Chemours, Tyco Fire Products, National Foam, Buckeye Fire Equipment, Kidde-Fenwal, and other AFFF manufacturers.

    5

    During discovery, both sides exchange evidence regarding PFAS toxicology, corporate knowledge of PFAS hazards, exposure pathway documentation, and causation expert testimony. The MDL has already completed significant discovery, and several bellwether trials have been conducted, providing settlement frameworks for resolving claims.

    6

    In June 2023, 3M agreed to a $10.3 billion settlement to resolve drinking water claims, and a separate $1.19 billion settlement was reached with DuPont/Chemours. Individual personal injury claims against these defendants are being resolved through the MDL settlement processes. Claims against remaining defendants continue to be litigated, with potential for additional settlements or trial outcomes.

    7

    Your legal team will manage all communications with defendants, attend MDL case management conferences, handle expert discovery and Daubert motion practice, and advise you on any settlement offers received. It is important to maintain open communication with your attorney and promptly respond to requests for documents or information.

    Frequently Asked Questions

    Sources & References

    1.
    MDL No. 2873 — In re: Aqueous Film-Forming Foams Products Liability Litigation — U.S. District Court, District of South Carolina, 2018–2026
    3.
    IARC Monographs on the Evaluation of Carcinogenic Risks to Humans: PFOA and PFOS — World Health Organization / International Agency for Research on Cancer, 2023
    4.
    NIOSH Study of Cancer Among Firefighters (2023) — National Institute for Occupational Safety and Health / CDC, 2023
    5.
    ATSDR PFAS Exposure Assessments at Military Installations — Agency for Toxic Substances and Disease Registry / CDC, 2020–2025
    6.
    National Academies of Sciences — Guidance on PFAS Testing and Clinical Follow-Up — National Academies of Sciences, Engineering, and Medicine, 2022

    Think You May Have a Claim?

    A free, confidential case review can help you understand your options and whether you may qualify for compensation. There is no obligation and no upfront cost.

    Request a Free Case Review