AFFF firefighting foam contains PFAS chemicals that have contaminated drinking water supplies, soil, and groundwater across the United States and internationally, triggering mass tort litigation against manufacturers and users. PFAS—per- and polyfluoroalkyl substances—are synthetic chemicals designed to resist water and oil, making them ideal for fighting petroleum fires, but their extreme persistence means they remain in the environment indefinitely. In 2023, the U.S.
Environmental Protection Agency established strict drinking water standards for several PFAS, recognizing widespread contamination: the Agency detected PFAS in 97% of Americans’ blood samples, with military bases, airports, and firefighter training facilities showing particularly high levels due to decades of AFFF use. The mass tort litigation stems from the fact that AFFF manufacturers—including 3M, Chemours, Bacardi, Tyco, and others—knew or should have known that PFAS chemicals persist in the environment and bioaccumulate in human tissue, yet continued producing and promoting AFFF while downplaying health risks. Thousands of property owners, municipalities, and individuals have filed lawsuits alleging contamination of their land and water supplies. For example, the Glendale, Arizona military base and communities surrounding Wurtsmith Air Force Base in Michigan discovered AFFF-related PFAS contamination affecting residential drinking water supplies, leading to significant litigation and settlements.
Table of Contents
- How Did AFFF Foam Create PFAS Contamination in Drinking Water and Soil?
- What Are the Health Concerns Associated with PFAS Exposure from Contaminated Water?
- What Are the Main PFAS Mass Tort Cases and Settlement Amounts?
- What Steps Should Property Owners and Residents Take After PFAS Contamination Is Discovered?
- What Are the Key Challenges and Limitations in AFFF PFAS Litigation?
- The Role of AFFF Use at Military Bases and Airports in PFAS Spread
- What Is the Future of AFFF PFAS Litigation and Remediation Standards?
- Conclusion
- Frequently Asked Questions
How Did AFFF Foam Create PFAS Contamination in Drinking Water and Soil?
AFFF has been used since the 1970s to suppress fires involving flammable liquids, particularly at military installations, airports, and fire training facilities. The foam’s effectiveness comes from PFAS chemicals that break down the surface tension of fuel, but the same stability that makes PFAS useful for firefighting makes them virtually impossible to break down naturally. When AFFF is used during training exercises or emergency responses, the foam seeps into the ground and enters groundwater, where it persists indefinitely. Unlike many pollutants that degrade over time, PFAS remains chemically stable for decades, creating what scientists call “forever chemicals.” The contamination spreads through natural groundwater movement and can travel miles from the original application site.
A single AFFF training exercise at a fire academy can contaminate an aquifer serving tens of thousands of people. Worse, PFAS is extremely mobile in soil—it doesn’t bind to soil particles like other contaminants, so it travels freely through groundwater systems. Once PFAS reaches a drinking water source, conventional water treatment systems cannot remove it completely. Activated carbon filters work but require frequent replacement at significant cost, and even advanced treatments like reverse osmosis are not universally available in all communities. This means many contaminated water systems have simply had to notify residents and recommend bottled water as a precaution.
What Are the Health Concerns Associated with PFAS Exposure from Contaminated Water?
Research has linked PFAS exposure to several serious health conditions, though the scientific understanding continues to evolve. Studies show associations between PFAS exposure and elevated cholesterol, increased liver enzymes, immune system suppression, thyroid disease, kidney disease, and certain cancers—particularly kidney and testicular cancer. A limitation of current science is that much of this evidence comes from occupational studies of PFAS manufacturing workers, not necessarily representative of exposure levels in contaminated communities. The EPA’s 2023 drinking water standards set health advisory limits of 4 parts per trillion for PFOA and PFOS combined, but these limits apply only to these two PFAS compounds—not the hundreds of other PFAS in use.
The warning from public health experts is that PFAS effects are dose-dependent and cumulative: low-level exposure over decades may pose different risks than acute high-level exposure. Additionally, PFAS bioaccumulates, meaning it builds up in your body over time and doesn’t easily leave your system—it can take years to clear from your blood. Certain populations face higher exposure: firefighters who apply AFFF regularly, military personnel at contaminated bases, and residents whose drinking water sources are affected. Children may be at elevated risk because they drink more water per pound of body weight than adults and because their bodies are still developing. Many contaminated communities don’t know their water is affected until explicit testing is conducted—Delaware and New Hampshire only discovered widespread contamination after independent testing, years after AFFF use.
What Are the Main PFAS Mass Tort Cases and Settlement Amounts?
The largest AFFF-related PFAS litigation has focused on claims against 3M, which manufactured the dominant brand “Scotchgard” and supplied AFFF to the U.S. military for decades. In June 2023, 3M agreed to settle PFAS litigation for $10.3 billion, the second-largest settlement in U.S. history, covering claims from municipalities, states, water authorities, and individuals exposed to PFAS through AFFF. The settlement structure included payments to water utilities for testing and remediation, as well as compensation for personal injury claims.
However, the settlement is only one of many ongoing AFFF cases—thousands of individual lawsuits and putative class actions remain pending against other manufacturers including Chemours, Bacardi, and Tyco International. Specific settlements have varied significantly based on exposure level and jurisdiction. Some state-level agreements have been substantially smaller, while individual cases have yielded settlements ranging from low five figures for property damage to seven figures for personal injury claims with documented serious health effects. A comparison shows that water contamination settlements tend to be lower per-case than contamination events from chemical spills, because PFAS damage is often invisible: there’s no visible pollution, no evacuations, and companies can claim the risk is still being studied. Residents of contaminated areas often struggle to prove causation directly linking PFAS exposure to their health problems, particularly for diseases like thyroid disease or elevated cholesterol that have multiple risk factors.
What Steps Should Property Owners and Residents Take After PFAS Contamination Is Discovered?
If you discover that your drinking water or property is affected by PFAS contamination, the first step is confirmation through independent testing with a certified lab—municipal advisories alone may not indicate your specific exposure level. Once contamination is confirmed, you should document everything: water test results, dates of use, health effects, medical records, and any communication from water authorities or regulators. This documentation becomes critical if you pursue a legal claim. You should also consider installing point-of-use water treatment if your municipal water is affected; activated carbon filters remove PFAS but require regular replacement, typically every 6 to 12 months depending on contamination levels.
Next, investigate whether your contamination qualifies for existing litigation settlements or class actions. This requires contacting a lawyer or checking settlement administration websites for active cases in your state or county. A tradeoff exists between speed and compensation: joining an existing class action gets you into settlement faster but may result in lower per-claim awards shared among thousands of claimants, whereas individual litigation can yield larger awards but takes significantly longer and requires sustained legal costs. Some contaminated communities have also filed municipal lawsuits to recover the cost of water system upgrades and remediation, separate from individual claims—these often settle much faster than personal injury cases.
What Are the Key Challenges and Limitations in AFFF PFAS Litigation?
Proving causation—the link between PFAS exposure and a specific health effect—is the major barrier in personal injury claims. PFAS exposure contributes to disease risk, but it’s difficult to prove that your specific kidney cancer or thyroid condition was caused by PFAS rather than genetics, diet, or other environmental factors. This is why many successful claims focus on property contamination and remediation costs rather than personal injury. Additionally, PFAS has been used for over 50 years, meaning the statute of limitations has already expired on many potential claims, particularly for people exposed decades ago who didn’t know their water was contaminated until recently.
A warning about settlement timing: many AFFF cases have been consolidated into multidistrict litigation (MDL) in federal courts, where the timeline from filing to settlement can extend 5 to 10 years. Some residents expecting quick resolution have faced unexpected delays when manufacturers appealed settlements or when new litigation against other manufacturers began. Another limitation is geographic: if you live in a state with strict contamination testing requirements, you’re more likely to be aware of PFAS exposure, but if your state doesn’t mandate testing, you might not discover contamination until long after exposure occurred. Lastly, remediation costs remain astronomical—communities like Horsham Township, Pennsylvania spent millions removing PFAS from their water system even before any litigation settlement, and most small municipalities cannot afford the expense alone.
The Role of AFFF Use at Military Bases and Airports in PFAS Spread
Military installations and civilian airports represent the largest concentrated sources of AFFF contamination, because both use the foam routinely for training exercises and emergency response drills. The U.S. Department of Defense used AFFF extensively from the 1970s through the 2010s at thousands of bases worldwide, often without detailed tracking of where the foam was applied or disposed. Wurtsmith Air Force Base in Michigan, Naval Air Station Kingsville in Texas, and dozens of other installations have all had their surrounding communities contaminated with PFAS.
The military didn’t mandate PFAS-free alternatives until 2018, nearly half a century after PFAS’s environmental persistence was first documented in scientific literature. Commercial airports have similar patterns of contamination. Airports maintain firefighting capabilities for emergency response, and AFFF has been stored and tested at nearly every major airport. The contamination from these facilities often extends into nearby communities’ water systems. Interestingly, the federal government’s late action to restrict AFFF also delayed private sector response—companies manufacturing PFAS-free AFFF alternatives didn’t seriously invest in development until the military began requiring substitutes, meaning safer alternatives remained expensive and rare until recently.
What Is the Future of AFFF PFAS Litigation and Remediation Standards?
The EPA’s 2023 drinking water standards set a precedent for stricter regulation of PFAS, but only two compounds (PFOA and PFOS) were included in enforceable standards; hundreds of other PFAS remain unregulated in drinking water despite evidence of similar persistence and bioaccumulation. Litigation will likely continue for decades as previously unknown contamination sites are discovered and as long-latency diseases emerge in exposed populations. The future also includes expanded liability—states and municipalities are increasingly holding waste managers, airports, and military contractors accountable for PFAS disposal, not just manufacturers, broadening the pool of defendants in new cases.
Remediation technology is advancing, but cost remains prohibitive for many communities. Newer methods like plasma treatment and photocatalytic degradation can destroy PFAS, but they’re too expensive for widespread municipal use. Most experts expect that PFAS contamination will remain a public health issue for generations—complete environmental cleanup is essentially impossible given PFAS’s persistence. Therefore, ongoing litigation will increasingly focus on long-term water supply protection and compensation for affected communities, rather than on restoring contaminated sites to pre-PFAS conditions.
Conclusion
AFFF firefighting foam’s PFAS contamination has created one of the largest environmental mass torts in U.S. history, with exposure affecting military personnel, airport workers, firefighters, and thousands of residents nationwide. The 3M settlement for $10.3 billion represents the largest recovery to date, but ongoing litigation against other manufacturers and continued discovery of new contaminated sites suggests the legal disputes will persist for years.
Understanding your contamination exposure, documenting evidence, and acting quickly to investigate settlements or individual claims are critical steps if you believe you’ve been affected. If you discover PFAS contamination in your drinking water or property, contact a lawyer specializing in environmental contamination to evaluate your potential claim. Settlements and available remedies vary by location and exposure level, and statutes of limitations may apply, so timely action is essential. Many attorneys handling AFFF litigation work on contingency or no-fee consultations, so there’s no financial risk to exploring your options.
Frequently Asked Questions
What is PFAS and why is it in AFFF foam?
PFAS are synthetic chemicals designed to resist water and oil. Manufacturers included PFAS in AFFF foam because it dramatically improves the foam’s ability to suppress petroleum fires by breaking down fuel’s surface tension. The problem is that PFAS’s chemical stability—what makes it useful—also makes it impossible to degrade naturally, so it persists indefinitely in the environment.
How do I know if my drinking water is contaminated with PFAS?
Most municipal water systems test for PFAS if they’re in areas with known AFFF use, but testing requirements vary by state. You can contact your water utility and request PFAS testing results, or hire an independent certified lab to test your water supply. The EPA’s current safety standard is 4 parts per trillion for PFOA and PFOS combined, though the agency may lower this further as evidence accumulates.
Am I eligible for any AFFF PFAS settlement?
Eligibility depends on several factors: whether your water or property was contaminated, whether you have documented exposure, whether you live within the jurisdiction of an active settlement, and whether the statute of limitations has expired. The 3M settlement covers claims in multiple states, but other cases are ongoing. An attorney can review your specific situation and determine what claims you might pursue.
How much money can I receive from an AFFF PFAS claim?
Settlement amounts vary widely. Property contamination claims typically range from tens of thousands to hundreds of thousands of dollars depending on remediation costs and property impact. Personal injury claims that establish a direct link between PFAS exposure and health effects have historically paid higher amounts, but these are harder to prove. Class action settlements typically distribute less per claimant than individual lawsuits but require less legal work from you.
What are the health effects of PFAS exposure?
Documented health effects linked to PFAS exposure include elevated cholesterol, liver enzyme elevation, immune system suppression, thyroid disease, kidney disease, and increased risk of kidney and testicular cancer. However, establishing that your specific health condition was caused by PFAS exposure rather than other factors can be difficult, which is why personal injury claims face higher evidentiary burdens than property damage claims.
What can I do to reduce my PFAS exposure right now?
If your drinking water is contaminated, install a point-of-use activated carbon filter (requires regular replacement) or switch to bottled water. Avoid using tap water for cooking and drinking until contamination levels drop below safety standards. Some municipalities provide free or subsidized water filters or bottled water to affected residents. Document all mitigation measures, costs, and any health effects, as these become relevant if you pursue a claim.