Case guide

3M and DuPont PFAS Cases: Check the Parties

Trying to match a foam product or PFAS headline to a company? Check the label, dates and exact legal names.

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Updated Oct 4, 202617 sources

This may apply to you if

  • Describe the foam you handled and your work dates, if known.
  • Bring your diagnosis and treatment history for an individual check.
  • If you drank water with PFAS, bring the water test report and your address history.

What the public record says

These are cited sources. Their inclusion does not imply that they endorse People’s Justice or reviewed this page.

Richard M. Gergel · United States District Court for the District of South Carolina · United States District Judge

Finding: The August 31, 2026 order sets expert-motion dates for thyroid and liver cancer. It does not set an individual payment.

District of South Carolina: CMO33F (opens in a new tab) · Aug 31, 2026 · Checked Oct 3, 2026

International Agency for Research on Cancer · World Health Organization · Publisher of the cancer hazard assessment

Finding: PFOA is classed as able to cause cancer; PFOS as possibly able to cause cancer. The classifications do not measure individual risk at a given dose.

IARC: PFOA/PFOS evaluation Q&A (opens in a new tab) · Dec 1, 2023 · Checked Oct 3, 2026

The evidence and its limits

International Agency for Research on Cancer · 2023

PFOA and PFOS cancer hazard evaluation

Design:
Agency review
Participants:
An expert review of multiple evidence streams; not one enrolled patient study.
Finding:
PFOA: cancer hazard with limited human kidney and testicular cancer evidence. PFOS: possible cancer hazard.
Main limitation
The classifications do not measure your personal risk or prove that foam caused your illness.

Read the source: PFOA and PFOS cancer hazard evaluation (opens in a new tab) · Checked Oct 3, 2026

The short answer

Are these company names interchangeable?
No. Check the exact name in the product or case record. A headline may shorten the names of several separate parties. [16]
How can I identify the foam I used?
Keep the label, product name and dates if you have them. Note which details are uncertain. Do not guess the company from the foam’s look. [1]
What did the water-system cases resolve?
The listed deals cover defined public water-system claims. They address that class and its costs. They are not payments for every household’s illness. [16]
Does PFAS research establish which company owes me?
No. A hazard finding does not prove which product you used or caused your illness. Each claim needs its own facts. [4]

What rules a case out

Not covered by this case

  • 3M and the DuPont settlement parties are not one company.
  • A current company name does not identify every past product.
  • Water-system settlement approval does not prove your personal cause.

The process

What happens next

  1. 01

    You answer a few questions

    About two minutes. Nothing is sent until you agree on the last step and press submit.

  2. 02

    A lawyer looks at it

    A lawyer at the firm reads your answers and checks them against the current case criteria.

  3. 03

    The firm decides and gets in touch

    If the firm takes your case, you get the terms in writing to read before you sign. You can always say no.

Trying to match a foam product or PFAS headline to a company? Check the label, dates and exact legal names. A water-system deal does not decide your injury claim.

Are these company names interchangeable?

No. Check the exact name in the product or case record. A headline may shorten the names of several separate parties.

The February 2024 water-system order lists Chemours, DuPont, Corteva and EIDP entities. The 3M water-system approval is a separate record. These names do not by themselves establish who made a product you used at a particular time.

How can I identify the foam I used?

Keep the label, product name and dates if you have them. Note which details are uncertain. Do not guess the company from the foam’s look.

NIOSH describes PFAS in some liquid-fuel firefighting foams and possible work exposure. It does not identify every product in a reader’s history. Ask a lawyer how to seek missing purchase or training records without changing what you recall.

What did the water-system cases resolve?

The listed deals cover defined public water-system claims. They address that class and its costs. They are not payments for every household’s illness.

The DuPont approval concerns alleged water testing and treatment costs. Its class excludes some independent private wells. The administrator FAQ records defendant denials; settlement does not mean those allegations were all proved.

The 3M FAQ describes a different defined class and exclusions. Read the original deal before treating either headline as a personal offer.

Does PFAS research establish which company owes me?

No. A hazard finding does not prove which product you used or caused your illness. Each claim needs its own facts.

IARC assessed cancer hazards for PFOA and PFOS. It did not determine the manufacturer of a reader’s foam or assign liability for a person’s disease. ATSDR also describes limits of blood testing.

What records should I put beside the company name?

List the product, site and use dates you know. Keep health reports separate from those details. Give a lawyer the original records rather than a guessed label.

An exposure history can include direct work contact or affected water. PFAS can have other sources too. A covered health provider can explain how to request records for your own care history.

What should I ask before pursuing a case?

Ask which party and claim the lawyer would review. Ask about the time limit and costs in writing. Confirm who will handle your files.

General deadline guidance and the ABA model fee rule describe questions to resolve. They do not certify company responsibility, acceptance by a firm or an individual result. If you have counsel, discuss the new record with that lawyer first.

Scientific evidence for this case

AFFF firefighting foam claims: what to check · La Medicina del Lavoro · 2023Meta-analysis

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

Relative risk of 1.74 for kidney cancer among individuals with high PFAS exposure compared to low-exposure controls

AFFF firefighting foam claims: what to check · Annals of Global Health · 2023

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

PFAS manufacturers knew about the persistence and toxicity of their products as early as 1970 — more than 50 years before widespread public awareness

AFFF firefighting foam claims: what to check · Environmental Health Perspectives · 2012Cohort

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

Determined "probable link" between PFOA exposure and six diseases: kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, high cholesterol, and pregnancy-induced hypertension

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Questions about this guide

Why is 3M the largest defendant in the AFFF litigation?

3M is the largest defendant because it was the primary manufacturer of PFOS-based AFFF from the 1960s through 2000, making it the single largest source of PFAS environmental contamination from firefighting foam. 3M developed AFFF in partnership with the U.S. Navy, supplied it to military installations, airports, and fire departments nationwide for nearly four decades, and has the most extensive documented history of internal knowledge about PFAS toxicity. 3M's own 1970s studies showed workers' PFAS blood levels at 1,000 times normal.

What did DuPont know about PFOA toxicity?

DuPont's internal knowledge of PFOA toxicity is one of the most well-documented cases of corporate concealment in environmental law. Key facts: In 1980, 2 of 8 pregnancies among PFOA-exposed workers resulted in birth defects — DuPont concealed this from regulators. Throughout the 1990s, DuPont's own animal studies showed PFOA caused tumors in rats — the company continued discharging PFOA into the Ohio River. DuPont did not disclose PFOA contamination of community drinking water until forced to by litigation. Attorney Robert Bilott's 2001 lawsuit against DuPont exposed decades of concealment and led to the creation of the C8 Science Panel. The 2023 article "The Devil They Knew" documented that manufacturers knew of PFAS dangers by 1970.

Are DuPont, Chemours, and Corteva all liable in the AFFF litigation?

Yes. DuPont restructured into three separate companies: DuPont de Nemours (successor company), Chemours (spun off in 2015 to assume fluorochemical liabilities), and Corteva Agriscience (spun off in 2019). Courts have generally held that corporate restructurings do not eliminate liability for pre-existing torts, and the three-company structure has been criticized as an attempt to isolate liabilities rather than accept responsibility.

Sources

  1. NIOSH: PFAS and Worker HealthNIOSH: PFAS and Worker Health · regulator
  2. ATSDR: PFAS and Your HealthATSDR: PFAS and Your Health · regulator
  3. ATSDR: PFAS Information for CliniciansATSDR: PFAS Information for Clinicians · regulator
  4. IARC: PFOA/PFOS evaluation Q&AIARC: PFOA/PFOS evaluation Q&A
  5. ATSDR: Testing for PFASATSDR: Testing for PFAS · regulator
  6. EPA: PFAS in Private WellsEPA: PFAS in Private Wells · regulator
  7. District of South Carolina: CMO33FDistrict of South Carolina: CMO33F · court
  8. District of South Carolina: CMO38District of South Carolina: CMO38 · court
  9. 3M Public Water Systems Final Approval Order3M Public Water Systems Final Approval Order · court
  10. Court-authorized 3M Public Water Systems FAQCourt-authorized 3M Public Water Systems FAQ · court
  11. ABA Model Rule1.5: FeesABA Model Rule1.5: Fees
  12. HHS: Your Medical RecordsHHS: Your Medical Records · regulator
  13. SDNY: How long do I have to file?SDNY: How long do I have to file? · court
  14. District of South Carolina: AFFF FAQsDistrict of South Carolina: AFFF FAQs · court
  15. District of South Carolina: AFFF Orders RepositoryDistrict of South Carolina: AFFF Orders Repository · court
  16. District of South Carolina: DuPont Public Water System Final Approval
  17. Authorized DuPont Water Settlement: Class and LimitsAuthorized DuPont Water Settlement: Class and Limits

Checked against 14 primary sources by People's Justice editors · Updated

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People's Justice research team · Updated Oct 4, 2026