PFAS Class Actions 2026 Guide: eligibility, proof, and deadlines; Key Facts and Questions to Ask

PFAS class actions in 2026 follow two tracks: payments to public water systems for testing and treatment, and separate suits for personal injury. PFAS means per- and polyfluoroalkyl substances, and each track has its own eligibility, proof, and deadlines.

Water funds pay utilities, not residents directly. Injury claims need medical proof and a different filing. Use the track below that matches your role to avoid a rejected claim.

Who gets water-settlement money?
What proof must water systems file?
Which deadlines control Phase 2 claims?
Can individuals file for illness?
What is excluded and what should you ask?

Who gets water-settlement money?

The 3M ($12.5B) and DuPont/Chemours/Corteva ($1.185B) drinking-water settlements pay active U.S. public water systems, not individuals, for PFAS testing and treatment costs.

According to the NRDC analysis of settlement funds, the money offsets utility costs rather than household claims. Justia's posted Notice of Proposed Class Action Settlement describes eligibility as systems with an impacted source as of the settlement date. It also includes non-impacted systems required to test under UCMR-5 or serving over 3,300 people.

Active U.S. public water system seeking testing or treatment costs
Impacted source as of the settlement date
Non-impacted system required to test under UCMR-5
Non-impacted system serving over 3,300 people

What proof must water systems file?

Water Online reports proof starts with baseline PFAS lab results from each wellhead or surface-water intake. Each result ties contamination to a specific entry point.

The same Water Online report says systems must also submit flow-rate, production-capacity and annual-production documentation to the claims administrator. Those records set payment scale and verify operating size.

Which deadlines control Phase 2 claims?

NRDC reports Phase 2 water systems had to file testing-cost claims by Jan. 1, 2026.

Action Fund claims then faced June 30, 2026 for DuPont and July 31, 2026 for 3M. Chestnut/Milberg via PR reports two added water-provider settlements: Tyco ($750M) and BASF ($316.5M). Those funds use separate claim forms and earlier 60-day/2025 windows, so counsel must check each fund.

Jan. 1, 2026: Phase 2 testing-cost claims due
June 30, 2026: DuPont Action Fund claims due
July 31, 2026: 3M Action Fund claims due

Can individuals file for illness?

Personal-injury cases focus on kidney cancer, testicular cancer and ulcerative colitis after 6+ months drinking contaminated water. The April 2025 Levin Law brochure describes that pattern in its Levin Law PFAS injury criteria. The same brochure says proof uses medical records, residence/work history and water-contamination or blood-test evidence.

Gather diagnosis records first, then address history that overlaps the water source. Pillsbury Law's 2026 alert says EPA's April 2024 drinking-water rule set enforceable limits of 4.0 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and GenX. It says May 2026 proposals would keep PFOA/PFOS but rescind the others and extend compliance from 2029 to 2031, as detailed in the Pillsbury Law alert on EPA proposals.

What is excluded and what should you ask?

The 3M/DuPont water settlements do not cover state attorney-general river/stream claims, federal claims, or personal-injury and property-damage claims, which need separate suits. Bloomberg Law reported that boundary in 2023 in its Bloomberg Law report on state PFAS suits. Ask counsel to confirm which fund, form, and deadline applies before you submit, because Tyco and BASF do not follow the 3M/DuPont dates.

Am I filing as a water system or as an injured person?
Which fund and form matches my claim?
Do I hold the lab, flow, medical, and residence records listed above?
Which deadline controls my fund, and who confirms receipt?