PFAS Lawsuits Top 15,000 as Muni Deadlines Close

PFAS Litigation Tops 15,000 Cases as Municipal Deadlines Close

Updated August 22, 2026: All three Phase 2 municipal settlement deadlines referenced in the original February 2026 reporting have now passed. This update replaces the "deadline approaching" framing with current deadline outcomes, refreshes the pending case count, and reports on the personal injury bellwether trial's continued delay.

As of August 2026, 15,246 personal injury lawsuits are pending in MDL 2873 in the District of South Carolina, up from 15,216 in February. Municipal water authorities that wanted a share of over $12 billion in public water system settlements finalized with 3M and DuPont had to clear three filing deadlines this year, and all three have now passed. Per the National League of Cities, Testing Claims closed on March 31, 2026, the primary Action Fund Claims deadline followed on July 31, and Special Needs Fund Claims closed August 1.

The broad scope of environmental contamination continues to drive active case volumes. EPA monitoring indicates that 165 million Americans reside in areas with measurable PFAS levels in municipal water supplies, with contamination verified in all 50 states. Annual healthcare costs associated with PFAS-related illnesses are estimated at $37 to $59 billion nationally.

Background on AFFF and Personal Injury Claims

Per- and polyfluoroalkyl substances (PFAS) are synthetic fluorinated compounds manufactured since the 1940s. Their stable carbon-fluorine bonds prevent natural environmental degradation.

Personal injury claims largely stem from aqueous film-forming foam (AFFF), a firefighting agent used extensively by the Department of Defense, municipal airports, and industrial facilities. Runoff from fire training sites infiltrated underlying groundwater aquifers. The International Agency for Research on Cancer classified occupational exposure as a firefighter as a Group 1 human carcinogen in 2022, and occupational studies confirm elevated serum PFAS concentrations in exposed personnel.

Public water system claims have moved through substantial settlement resolutions. 3M entered into a $10.3 billion settlement with public water providers, while DuPont, Chemours, and Corteva agreed to a $1.185 billion resolution. In August 2025, Chemours, DuPont, and Corteva also reached an $875 million settlement with New Jersey resolving the state's PFAS and other environmental claims, including natural resource damages.

By contrast, individual personal injury and occupational exposure claims remain in active discovery without a global settlement framework.

Parallel Procedural Tracks in 2026

Firms managing PFAS dockets are navigating two concurrent procedural schedules:

Municipal Settlement Deadlines: All Closed

The National League of Cities confirmed the Phase 2 filing deadlines for water system claimants, and all three have passed:

• March 31, 2026 (closed): Testing Claims reimbursement (3M and DuPont)
• July 31, 2026 (closed): Action Fund Claims, the primary filing deadline determining overall settlement eligibility for both the 3M and DuPont funds
• August 1, 2026 (closed): Special Needs Fund Claims (3M and DuPont)

Water authorities that missed these cutoffs forfeit their allocated settlement portions and, because most did not opt out of the underlying class settlements, are now barred from filing future water contamination claims against 3M and DuPont over PFAS. Phase 2 payments will be calculated once the July 31 filing data is compiled, then disbursed incrementally on a schedule running to roughly 2037, according to settlement administrator reporting.

Personal Injury Bellwether Trial: Still Unscheduled

The personal injury track has not moved as quickly as the municipal settlements. The original kidney-cancer bellwether trial, set for October 20, 2025, was vacated by Judge Gergel via Case Management Order No. 35, filed August 15, 2025, in response to a surge of new filings. As of August 22, 2026, no replacement trial date has been set.

A 28-case bellwether pool (8 kidney cancer, 8 testicular cancer, 8 thyroid disease, and 4 ulcerative colitis claims) continues through case-specific discovery. The parties submitted Group B bellwether selections and expert discovery proposals on July 20, 2026. No global personal injury settlement has been announced, and none of the tier figures attorneys cite publicly are court-confirmed.

Evidentiary and Medical Record Complexity

PFAS claims involve multi-decade latency intervals between chemical exposure and clinical diagnosis.

A claimant diagnosed with renal cell carcinoma in 2024 often requires military service records from the 1990s, occupational exposure logs, baseline blood panel histories, and pathology reports from multiple regional medical centers.

Firms that retrieve and verify these multi-source records early can tier claims accurately before bellwether outcomes set settlement criteria.

Federal Regulatory Standards

The EPA confirmed it will maintain National Primary Drinking Water Regulations for PFOA and PFOS at 4 parts per trillion. In a proposed rule announced May 18, 2026, the agency would let water systems request up to two extra years, to 2031, to comply with those limits. A separate proposal would rescind the drinking water regulations for the alternative compounds (PFHxS, PFNA, GenX chemicals, and the hazard index mixture that includes PFBS).

The distinction matters for litigation: legacy PFOA and PFOS claims keep strong regulatory support, while claims tied to replacement chemistries need their own exposure modeling.

A Second PFAS Docket Is Now Live

The personal injury track isn't the only PFAS litigation firms need to watch. On August 18, 2026, the JPML centralized firefighter turnout gear PFAS claims as MDL 3191 in the District of Minnesota before Judge Jeffrey M. Bryan, rejecting a merger into MDL 2873. Turnout gear claims allege direct dermal exposure through protective clothing rather than water contamination, which means separate proof requirements and, for firefighters with both exposure pathways, a decision about which docket fits their facts.

Strategic Priorities for Law Firms

Preparing PFAS Inventories Ahead of the Next Bellwether Date

With the bellwether trial date still unset and municipal settlement windows now closed, litigation teams are auditing active PFAS inventories to verify proof of exposure and pathology.

Firms with verified oncology reports, serum lab records, and complete provider histories will be prepared to position claims within settlement tiers as federal trials conclude. LlamaLab assembles those files at mass tort scale, across military, VA, and civilian providers, in 4 days on average.

Because medical record retrieval cost is a dedicated case expense, itemized per-case invoices flow directly onto settlement statements upon resolution. How that billing model compares across vendors is covered in LlamaLab's overview of medical record retrieval services for mass tort and PI firms.

Sources: National League of Cities, MDL Update, August 2026 statistics, Drugwatch, HarmReport, 3M settlement update, Lawsuit Process, AFFF bellwether tracker, LegalClarity, AFFF payout estimates, EPA, Environmental Working Group, NRDC, PubMed, HarrisMartin, MDL 3191 order. PFAS MDL case data from court filings in MDL 2873, District of South Carolina.