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PFAS Thyroid Disease and Thyroid Cancer Lawsuit

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People's Justice Legal Research Team

How PFAS Disrupt the Thyroid — The Mechanism

PFAS molecules share structural similarities with thyroid hormones (T3 and T4) and with the thyroid hormone transport proteins (transthyretin and thyroid-binding globulin) that carry hormones in the bloodstream. PFAS compete with thyroid hormones for binding sites on these transport proteins, reducing the availability of thyroid hormones in circulation. PFAS also interfere with the enzymes responsible for thyroid hormone synthesis in the thyroid gland and disrupt thyroid-stimulating hormone (TSH) signaling from the pituitary. The result is a range of thyroid dysfunction: hypothyroidism (insufficient thyroid hormone), hyperthyroidism (excess thyroid hormone signaling), thyroid nodule formation, and, in some cases, thyroid cancer through PFAS-driven disruption of thyroid cell proliferation controls. The C8 Health Project and multiple European cohort studies have documented elevated rates of thyroid disease in PFAS-exposed communities.

Thyroid Disease vs. Thyroid Cancer — Both Are Compensable

An important feature of PFAS thyroid claims is that both thyroid disease (non-cancer thyroid dysfunction requiring medication management) and thyroid cancer are recognized injury categories in MDL 2873. Many mass tort cases compensate only cancer diagnoses. PFAS thyroid claims extend the eligible claimant population to include the much larger group of individuals with PFAS-exposed hypothyroidism and hyperthyroidism requiring lifelong levothyroxine or methimazole management. While thyroid disease claims are valued lower than cancer claims — estimated in the $150,000–$300,000 range — the sheer number of potential thyroid disease claimants makes this a significant volume category. Thyroid cancer claims, particularly papillary thyroid carcinoma (the most common form), are valued in the $250,000–$500,000 range depending on extent of surgery, radioactive iodine treatment, and ongoing monitoring requirements.

Women and PFAS Thyroid Claims

Women are approximately three times more likely than men to develop thyroid disease, and PFAS exposure compounds this baseline risk. Military spouses who lived in on-base housing, women in contaminated communities who drank municipal tap water, and women in farming communities with biosolids PFAS exposure represent significant populations with potential thyroid disease and thyroid cancer claims. For military families specifically, spouses often spent years in on-base housing across multiple contaminated installations, accumulating PFAS exposure at multiple high-contamination sites. Female veterans who themselves served at contaminated installations also have thyroid claims. An attorney can evaluate both the exposure history (multiple installation duty stations are additive) and the thyroid diagnosis documentation to assess claim strength.

FAQ

Frequently Asked Questions

PFAS (per- and polyfluoroalkyl substances) are a group of more than 12,000 synthetic chemicals that have been manufactured and used in industrial and consumer products since the 1940s. They are called 'forever chemicals' because the carbon-fluorine bonds in their molecular structure are among the strongest in chemistry — they do not break down in the environment or in the human body. PFAS accumulate in soil, water, air, wildlife, and human blood and organs over time. The health risks from PFAS exposure have been documented in hundreds of epidemiological studies. PFAS are linked to kidney cancer, testicular cancer, thyroid cancer and disease, ulcerative colitis, liver disease, immune system disruption, pregnancy complications, and high cholesterol. PFAS act as endocrine disruptors — they interfere with hormone signaling — and accumulate in organs including the liver, kidneys, and thyroid. The International Agency for Research on Cancer (IARC) classified PFOA as a Group 1 known human carcinogen in 2023.
To qualify for a PFAS personal injury lawsuit, you generally need to meet three criteria. First, documented or provable exposure to PFAS-contaminated water: this typically means living or working near a military base, industrial facility, airport, or other PFAS source site for a sustained period, or using a municipal water system or private well that has tested positive for PFAS above EPA action levels. Second, a diagnosis of a qualifying medical condition: kidney cancer (renal cell carcinoma), testicular cancer, thyroid cancer, thyroid disease requiring medication, ulcerative colitis, liver cancer, or bladder cancer are the primary qualifying conditions in MDL 2873. Third, a medically plausible causal link between your exposure and your diagnosis, supported by the timeline of your exposure and the epidemiological evidence developed in MDL 2873. You do not need to have PFAS blood test results, though they are helpful — your attorney can help establish exposure through public contamination records and DoD disclosure data.
AFFF (aqueous film-forming foam) exposure and drinking water PFAS contamination are related but legally distinct pathways in PFAS litigation. AFFF exposure refers to direct occupational contact with AFFF firefighting foam — most commonly experienced by firefighters (military and civilian), airport ground crews, and industrial firefighting personnel who physically applied or trained with AFFF. This creates a particularly high-dose PFAS exposure pathway. Water contamination exposure refers to consuming or bathing in PFAS-contaminated tap water from a municipal system or private well that was contaminated by AFFF, industrial discharge, or other PFAS sources. Both pathways can result in PFAS bioaccumulation at levels associated with cancer and other disease. Both types of claims are consolidated in MDL 2873. The exposure pathway affects how causation is argued and what evidence documents exposure, but both can support individual personal injury claims for PFAS-linked cancers and conditions.
Individual PFAS personal injury settlement amounts have not yet been set by a global settlement program as of February 2026. MDL 2873 bellwether personal injury trials are scheduled for 2026 and will be the primary value-setting events for the individual claim pool. Based on the injury tier structure developed in MDL 2873 expert proceedings and comparable toxic tort litigation, estimated ranges are: kidney cancer and testicular cancer (MDL Tier 1 injuries with the strongest epidemiological links) — $300,000 to $600,000 or more depending on stage and treatment; thyroid cancer and other cancers — $250,000 to $500,000; thyroid disease and ulcerative colitis — $150,000 to $300,000; documented subclinical exposure with health effects — $50,000 to $150,000. These are pre-trial estimates. The $12.5 billion 3M settlement and $1.185 billion DuPont settlement compensate water utilities, not individual claimants — individual compensation is separate.
The U.S. Department of Defense has confirmed PFAS contamination at more than 700 military installations across the United States. The DoD used AFFF containing PFOS and PFOA for aircraft crash rescue and firefighting training for decades. When AFFF was applied during training exercises and emergencies, it soaked into the ground and contaminated groundwater. Notable contaminated installations include: Eielson Air Force Base, Alaska (334,200 ppt PFOS — among the highest recorded in the nation); Wright-Patterson AFB, Ohio; Peterson Space Force Base, Colorado; NAS Pensacola, Florida; Eglin AFB, Florida; Fort Carson, Colorado; JBLM (Joint Base Lewis-McChord), Washington; Vance AFB, Oklahoma; Marine Corps Base Camp Lejeune, North Carolina; and Pease Air National Guard Base, New Hampshire (one of the first confirmed military PFAS sites, confirmed 2014). Veterans, active-duty service members, their families, and civilians who lived or worked near these bases and consumed contaminated water may have legal claims.
Yes. In June 2023, 3M Company announced a settlement to pay $10.3 billion to $12.5 billion to U.S. public water systems to resolve claims for PFAS contamination of municipal drinking water supplies. This settlement, approved in MDL 2873 by Judge Richard Gergel in the District of South Carolina, is one of the largest environmental settlements in U.S. history. The funds are allocated to water utilities for the cost of PFAS testing and remediation — specifically, installing filtration systems to remove PFAS from drinking water. Separately, DuPont, Chemours, and Corteva agreed in 2024 to pay $1.185 billion to resolve additional water system PFAS claims. These landmark water system settlements are legally separate from individual personal injury claims — people sickened by PFAS exposure must pursue separate individual claims through MDL 2873.
MDL 2873 in the District of South Carolina is a multidistrict litigation — similar to a class action in that it consolidates thousands of related cases before a single judge for coordinated pretrial proceedings, but different in that each claimant maintains an individual claim rather than sharing equally in a class recovery. Individual PFAS personal injury claims are filed separately, with each claimant's damages based on their specific exposure history, diagnosis, and damages. There is no single class action settlement fund that individuals can simply submit a claim form to join as of February 2026. Claimants must file individual claims through an attorney to participate in MDL 2873 proceedings and any eventual settlement. Separate state-court PFAS cases and municipal water system cases are also pending across the country.
Several resources can help you determine whether your drinking water has been tested for PFAS. The Environmental Working Group (EWG) maintains an interactive PFAS contamination map at ewg.org/interactive-maps/pfas_contamination/ that shows thousands of confirmed PFAS contamination sites and tested water systems across the United States. The EPA's PFAS testing data from public water systems is publicly available through the Safe Drinking Water Information System. The Department of Defense publishes PFAS testing results for military installations and surrounding communities. If your water system has not been tested, you can purchase independent PFAS testing from certified environmental testing laboratories — look for labs certified under EPA Method 533 or EPA Method 537.1. If you use a private well, your county health department may offer testing resources. Water systems serving more than 3,300 people are now required to test for PFAS under EPA's April 2024 PFAS National Primary Drinking Water Regulation.
The statute of limitations for PFAS personal injury claims is typically 2 to 3 years from the date of a qualifying diagnosis — or from the date the claimant knew or should have known that their illness was caused by PFAS exposure (the discovery rule). Because PFAS contamination sites were often not publicly disclosed until DoD disclosure requirements took effect after 2016, and because many communities did not receive formal notification of PFAS contamination until 2018–2020, courts have been receptive to delayed discovery arguments for PFAS claimants. State limitations periods vary: California allows 3 years from discovery for environmental toxic tort claims; Florida allows 4 years for product liability with the discovery rule; Ohio and Colorado have 2-year limitations periods. MDL 2873 has also issued tolling orders that paused statutes of limitations for claimants who enrolled in the MDL before applicable cutoff dates. Consult a PFAS attorney immediately to evaluate your specific deadline.
The cancers most strongly and consistently linked to PFAS exposure in human epidemiological studies are: kidney cancer (renal cell carcinoma) — the MDL Tier 1 bellwether diagnosis; testicular cancer — particularly linked to PFOS and PFOA; thyroid cancer — associated with PFAS disruption of thyroid hormone signaling. Additional cancers with evidence of PFAS association include: liver cancer, bladder cancer, ovarian cancer, and non-Hodgkin lymphoma. In 2023, the International Agency for Research on Cancer (IARC) classified PFOA as a Group 1 known human carcinogen, citing sufficient evidence for kidney cancer in humans, and PFOS as a Group 2B possible human carcinogen. The C8 Health Project established the first comprehensive links between PFOA exposure and kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, and high cholesterol in a population of 69,000+ exposed individuals.
Yes. PFAS exposure through contaminated drinking water affects anyone who consumed or used that water — renters, homeowners, and transient residents alike. Renters who lived in apartments, rental houses, or base housing near military installations are just as much at risk of PFAS exposure as homeowners in the same area. Your legal standing to file a PFAS claim is based on your exposure and your diagnosis — not on whether you owned or rented your home. Similarly, people who lived on military installations in base housing have PFAS claims regardless of whether they were service members, military spouses, or dependents. Workers who regularly consumed water at a contaminated workplace can also file PFAS claims. If you drank contaminated water for a sustained period and developed a qualifying condition, you may have a claim regardless of your property ownership status.
The primary defendants in PFAS water contamination litigation are: 3M Company — manufactured PFOS-based PFAS from the 1950s through 2002 and supplied PFAS to the military and industry; settled water system claims for $12.5 billion in 2023; individual personal injury claims remain pending. DuPont de Nemours — manufactured PFOA (C8) at Washington Works in West Virginia for decades; discharged PFOA into the Ohio River; settled water system claims as part of the 2024 $1.185 billion settlement with Chemours and Corteva. Chemours Company — a DuPont spinoff that inherited PFAS liabilities; continues to operate Fayetteville Works in North Carolina where GenX chemicals contaminate the Cape Fear River. Corteva — another DuPont spinoff with PFAS liabilities. AFFF manufacturers: Tyco Fire Products, Chemguard, Buckeye Fire Equipment, National Foam, Angus Fire, and others who manufactured AFFF using PFAS for the military and civilian markets. 3M's January 2023 announcement that it would exit PFAS manufacturing by end of 2025 was another acknowledgment of the scope of liability.
Related Topics

Related Pages

AFFF Firefighter PFAS Exposure Lawsuit

Firefighters — both military and civilian — who worked with AFFF aqueous film-forming foam face the highest documented PFAS body burdens of any occupational group. AFFF contains PFOS and PFOA at concentrations orders of magnitude higher than contaminated drinking water. Firefighters with kidney cancer, testicular cancer, or thyroid disease following AFFF exposure have strong individual claims in MDL 2873.

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PFAS Biosolids Farm Contamination Lawsuit

PFAS-contaminated biosolids (sewage sludge) spread as agricultural fertilizer have contaminated private wells and farmland across the United States — a largely invisible exposure pathway that is only now reaching litigation. Affected farmers, rural homeowners, and farmworkers in Maine, Iowa, Michigan, and Texas have active claims. This is one of the least-covered and fastest-growing fronts in PFAS litigation.

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GenX Chemicals Chemours Lawsuit — Cape Fear River

Chemours Company — a DuPont spinoff — has discharged GenX chemicals (HFPO-DA) from its Fayetteville Works facility in Bladen County, North Carolina into the Cape Fear River since 2006. Wilmington-area residents who drank Cape Fear River water have been exposed to GenX and other PFAS at concentrations far above EPA health advisory levels. This is among the largest active industrial PFAS contamination zones in the eastern United States, and it is significantly underserved by legal content.

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PFAS Kidney Cancer Lawsuit

Kidney cancer (renal cell carcinoma) is the MDL 2873 Tier 1 bellwether injury — the PFAS-linked condition with the strongest and most consistent epidemiological association. The IARC classified PFOA as a Group 1 known human carcinogen for kidney cancer in 2023. Individuals who developed kidney cancer after sustained PFAS exposure through drinking water have among the strongest claims in PFAS litigation.

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Military Base PFAS Contamination Lawsuit

More than 700 U.S. military installations have confirmed PFAS contamination from decades of AFFF firefighting foam use. Veterans, active-duty service members, military families, and civilian base employees who lived or worked on contaminated installations and developed kidney cancer, testicular cancer, or thyroid disease may have substantial legal claims. The DoD has confirmed contamination at bases in all 50 states.

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Military Bases with PFAS Contamination — Complete List

The Department of Defense has confirmed PFAS contamination at more than 700 U.S. military installations as of 2026. This page provides a state-by-state summary of confirmed contaminated bases and the communities affected. If you lived or served at a contaminated installation and developed a qualifying health condition, contact a PFAS attorney to evaluate your claim.

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PFAS Settlement Amounts Per Person

The $12.5 billion 3M settlement and $1.185 billion DuPont/Chemours/Corteva settlement compensate water utilities — not individuals. Individual PFAS personal injury settlement amounts depend on injury category, exposure documentation, and MDL 2873 bellwether trial outcomes. Kidney and testicular cancer claims are expected to produce the highest individual recoveries, estimated at $300,000 to $600,000 or more.

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PFAS Lawsuit Statute of Limitations by State

The statute of limitations for PFAS personal injury claims is typically 2 to 3 years from diagnosis or from when you discovered the PFAS-illness connection. Because military and industrial PFAS contamination was not publicly disclosed until 2016–2020 in most communities, courts have been receptive to delayed discovery arguments. Act now — deadlines are real, and missing them permanently bars your claim.

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PFAS Testicular Cancer Lawsuit

Testicular cancer is an MDL 2873 Tier 1 injury category with one of the strongest epidemiological links to PFAS — particularly PFOS exposure. The cancer predominantly affects younger men (age 15–35), meaning veterans and firefighters who developed testicular cancer after PFAS exposure at military installations often carry decades of lost earnings and quality-of-life damages. Claims in MDL 2873 are active and advancing toward bellwether trials in 2026.

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PFAS Ulcerative Colitis Lawsuit

Ulcerative colitis — a chronic inflammatory bowel disease — was one of the six conditions designated by the C8 Science Panel as having a probable link to PFOA exposure in the Mid-Ohio Valley study. This is a non-cancer qualifying condition recognized in MDL 2873 personal injury proceedings. Claimants with PFAS exposure and a confirmed ulcerative colitis diagnosis may have viable claims even without a cancer diagnosis.

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PFAS Drinking Water Contamination Lawsuit

PFAS-contaminated municipal water systems and private wells have exposed millions of Americans to dangerous concentrations of forever chemicals. Residents who drank contaminated tap water for years and developed kidney cancer, testicular cancer, or thyroid disease have individual claims in MDL 2873. You do not need to have lived near a military base — industrial and agricultural PFAS sources have contaminated water supplies across the country.

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Parent Case

PFAS Water Contamination Lawsuit Lawsuit

PFAS (per- and polyfluoroalkyl substances) are a group of more than 12,000 synthetic chemicals that have been used in manufacturing since the 1940s. They are called 'forever chemicals' because they do not break down in the environment or in the human body. PFAS were used extensively in aqueous film-forming foam (AFFF), the firefighting foam used at military bases and airports for decades. PFAS-contaminated AFFF has leached into groundwater near hundreds of military installations and civilian airports across the United States. PFAS were also discharged into waterways by industrial manufacturers — most notably DuPont's PFOA contamination of the Ohio River valley and Chemours' GenX contamination of the Cape Fear River in North Carolina. 3M manufactured PFOS-based PFAS and supplied them to the military and industry from the 1950s through 2002. Both companies concealed internal studies showing that PFAS accumulated in human blood and were linked to cancer. MDL 2873 — the AFFF Products Liability Litigation in the District of South Carolina — consolidates individual personal injury claims. The 3M water system settlement ($12.5B, 2023) and the DuPont/Chemours/Corteva water system settlement ($1.185B, 2024) have resolved municipal water utility claims but left individual personal injury claims unresolved. Individuals diagnosed with kidney cancer, testicular cancer, thyroid cancer, thyroid disease, ulcerative colitis, or other PFAS-linked conditions following documented exposure to contaminated drinking water may have significant individual claims.

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