The 3M and DuPont PFAS Settlements, Explained

In the years since the EPA finalized PFAS drinking-water limits in April 2024, the litigation landscape around the chemical companies that produced PFAS has resolved into a series of headline settlements totaling well over $13 billion. The settlements cover three main categories of claims: public water-utility costs, state attorney general actions, and personal injury claims.

This is a plain-English walkthrough of what’s been settled, who pays what, and what it means if you’re served by a water utility that received settlement funds.

The defendants

Four companies dominate the US PFAS litigation:

• 3M. Manufactured PFOS for Scotchgard fabric protector and military firefighting foam (AFFF) from the 1950s until voluntarily phasing out production in 2002. Headquartered in Minnesota.
• DuPont (the legacy company). Manufactured PFOA at the Washington Works plant in Parkersburg, West Virginia, for decades. The Washington Works site is the source of the C8 Health Project — the epidemiological study that established kidney- and testicular-cancer links to PFOA exposure.
• Chemours. Spun off from DuPont in 2015 to inherit the legacy PFOA / fluorochemical business. Operates the Fayetteville Works plant in North Carolina, the source of the GenX (HFPO-DA) contamination in the Cape Fear River.
• Corteva. The agricultural-chemistry spin-off from DuPont, also sharing legacy PFOA liability.

DuPont, Chemours, and Corteva collectively are referred to as “the DuPont entities” — three corporate descendants of the original DuPont, each carrying a share of the legacy liability under a 2021 cost-sharing agreement.

Settlement 1: Public Water System claims (2023)

The largest single PFAS settlement was the 2023 multi-district class action brought by US public water utilities for the cost of removing PFAS contamination from drinking water.

• 3M agreed to pay up to $10.3 billion over 13 years (settlement finalized August 2023, payments through 2036).
• DuPont / Chemours / Corteva collectively agreed to pay $1.185 billion in a separate but parallel settlement.

The combined ~$11.5 billion is distributed to qualifying public water systems based on a formula tied to PFAS detections, system size, and remediation costs. Utilities had to opt in by a 2024 deadline; thousands did.

Important caveats:

• The settlement does not admit liability. Both 3M and the DuPont entities have stated the settlements are not admissions of wrongdoing or causation.
• The funds go to water utilities, not residents. If you pay a water bill to a utility that received settlement funds, that money is supposed to be applied to treatment infrastructure — not refunded to ratepayers.
• Utilities that opted out retain the right to sue separately. A small number of large utilities — including some California, Massachusetts, and New Jersey systems — opted out to pursue larger individual settlements.

Settlement 2: State attorney general actions

In parallel with the public-water-system class action, multiple state attorneys general have brought their own PFAS lawsuits against 3M, DuPont, and others. Major resolved settlements include:

• Minnesota v. 3M ($850 million, 2018). The original landmark state PFAS settlement. Funded treatment infrastructure for the East Metro corridor (Oakdale, Lake Elmo, Woodbury, Cottage Grove).
• Michigan v. 3M / Wolverine Worldwide (~$70 million combined, multiple years). Funded treatment in the Belmont / Plainfield Township / Rockford communities.
• New Hampshire v. 3M (settlement details under negotiation as of mid-2025).
• Ohio v. DuPont / Chemours (~$200 million, 2017–2021).

State attorney general settlements typically fund a mix of treatment infrastructure, monitoring programs, and natural-resource damages.

Settlement 3: Personal injury claims

Personal injury claims are litigated separately. The major resolved track is:

• The C8 Personal Injury Settlement (2017). DuPont agreed to pay $671 million to settle approximately 3,550 personal-injury claims from residents of the C8 Health Project area (Mid-Ohio Valley, Parkersburg WV / southeastern OH). The settlement covered six diseases the C8 Science Panel had concluded had a “probable link” to PFOA: kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, pregnancy-induced hypertension, and high cholesterol.

Personal injury litigation for newer cohorts — beyond the C8 area — is ongoing. Cases tied to Hoosick Falls (NY, Saint-Gobain), Pease Air National Guard Base (NH), and other documented contamination sites are still in active litigation as of 2026.

What about AFFF / military-base claims?

A separate multi-district litigation, the AFFF MDL in South Carolina federal court, covers personal injury and property damage claims arising from PFOS-based firefighting foam (AFFF) used at military bases, airports, and industrial fire-training sites.

• 3M settled with the US Department of Defense and various local plaintiff classes in 2023–2024 for amounts not yet fully disclosed.
• Personal injury claims (cancer, kidney disease, etc.) from individual veterans and base communities are still being adjudicated in many cases.
• The military’s own AFFF transition program is funded separately under DoD environmental remediation budgets.

What this means if you live in an affected area

If your water utility appears on the published list of public water systems that received settlement funds, three practical implications:

1. Your utility now has dedicated funding for PFAS treatment — they should be visibly investing in granular-activated-carbon or reverse-osmosis treatment infrastructure on a timeline matching the EPA’s 2029 MCL compliance deadline. You can find this in your utility’s annual Consumer Confidence Report.

2. Settlement funds do not flow to residents directly. If you experience PFAS-related health problems and want a personal injury claim, you generally need to pursue it separately through a personal injury attorney — and your eligibility depends on whether you live in a settled cohort area (e.g. the C8 Health Project counties) or whether your case falls under the ongoing AFFF MDL or a state-specific class.

3. The settlements do not remove your PFAS exposure. A water utility receiving $50 million from a class action still needs to design, build, and operate treatment infrastructure. That process can take 3–5 years from funding to operational. If you want protection in the interim — particularly if you have HIGH-risk levels in your area — a certified point-of-use filter (RO or NSF/ANSI 58 + P473 carbon block) is the practical action.

Where to read more

The complete list of utilities that opted into the 3M and DuPont public-water-system settlements is published on the Multi-District Litigation 2873 docket (Aqueous Film-Forming Foam Products Liability Litigation, US District Court for the District of South Carolina). For the C8 Health Project, the C8 Science Panel website remains the authoritative source on the epidemiological findings.

For personal injury claims, the right starting point is a lawyer with PFAS litigation experience — not a generic personal injury firm. The American Bar Association maintains a directory of qualified environmental health attorneys.

The bottom line

The settlements represent the largest US environmental liability resolution since asbestos and tobacco. They have moved billions of dollars toward water-treatment infrastructure that would otherwise have been paid from utility rates. But they don’t replace individual exposure protection: if your water is contaminated, the settlement check goes to your utility, not to your kitchen tap. For the in-between years — and the affected wells and small systems still litigating their own claims — knowing what’s actually in your water is step one. That’s the data this site exists to surface.