In re Aqueous Film-Forming Foams Products Liability Litigation (2018), 357 F. Supp. 3d 1391 (J.P.M.L. 2018), is among the largest active mass torts in the United States. The proceeding is pending before Judge Richard M. Gergel in the District of South Carolina, and the litigation encompasses more than 15,000 pending actions as of June 2026. The JPML created this consolidated multidistrict litigation by centralizing approximately 90 civil actions from eight judicial districts in December 2018, and four finally approved settlements with a combined nominal maximum of approximately $14.75 billion, using the 3M contractual cap, resolved the public water system track. The personal injury track remains unresolved.
The 2026 bellwether reset leaves practitioner implications concentrated in the separation between resolved public-water-system remediation claims and unresolved individual cancer claims.
AFFF, PFAS Contamination, and the December 2018 Consolidation
Aqueous film-forming foam was used for decades at military bases, airports, and industrial sites to suppress liquid fuel fires. That use released perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) into groundwater and drinking water systems, the same class of compounds that had already produced a major single-defendant settlement in earlier litigation.
The JPML centralized approximately 90 civil actions from eight judicial districts on December 7, 2018, under 28 U.S.C. § 1407, assigning the litigation to the District of South Carolina. The MDL encompasses four claim categories:
- State natural resource claims
- Individual property damage claims (private well owners)
- Public water system (PWS) property damage claims
- Personal injury claims, including medical monitoring
By mid-2026, total filings in the MDL exceeded 19,800, with 15,240 actions still pending. The gap between the resolved PWS track and the open personal injury track defines the litigation's current posture.
How MDL 2873 Split Water-Provider and Personal-Injury Claims
The procedural architecture of MDL 2873 separated property remediation from bodily injury through sequential bellwether programs. In September 2022, the court selected the City of Stuart public-water-system case as the first PWS bellwether for a June 2023 trial, but settlement negotiations overtook the calendar, and by late 2024 the four PWS settlements had received final approval.
With the water track resolved, the court turned to personal injury. Case Management Order No. 26 (ECF 3080, May 5, 2023) established the "Second Bellwether Program: Initial Personal Injury Claims." CMO 26 restricted the bellwether pool to plaintiffs alleging drinking water exposure at two specific sites: Peterson Air Force Base/Colorado Springs Municipal Airport and Naval Air Station Joint Reserve Base Willow Grove/Naval Air Warfare Center Warminster, the kind of military base water contamination that has anchored other federal exposure dockets.
CMO 26 directed the parties to build a 28-plaintiff initial discovery-pool framework across four conditions:
- 8 kidney cancer
- 8 testicular cancer
- 8 thyroid disease
- 4 ulcerative colitis
Later proceedings have narrowed the working pool through the tiered selection process, but the 28-plaintiff structure remains the court-ordered framework established in CMO 26. A kidney cancer bellwether trial was scheduled for October 20, 2025. CMO 35 (ECF 7823, August 15, 2025) vacated that date after the court became aware of "a large number of unfiled cases, many of which may not be vetted." CMO 35 established a filing window through September 5, 2025. The order required all Plaintiffs' Executive Committee members to file their personal injury cases alleging one or more of six "Listed Claims": kidney cancer, testicular cancer, ulcerative colitis, thyroid disease, liver cancer, and thyroid cancer. Accessible court records through June 2026 did not show a replacement trial date.
The $14.75 Billion Water Settlements and Their Explicit Scope Limitation
The headline settlement figures resolved only one of MDL 2873's four claim categories. Each agreement covers public water system contamination claims. Personal injury, individual property damage, and state natural resource claims are explicitly excluded.
The court-administered settlement site confirms four finally approved settlements:
- 3M Company: $10.3 billion present value, up to a $12.5 billion nominal cap, over 13 years. Final approval entered March 29, 2024 (ECF 4754).
- DuPont/Chemours/Corteva: $1.185 billion in cash. Final approval entered February 2024.
- Tyco Fire Products/Chemguard: $750 million. Final approval entered November 22, 2024 (ECF 6406).
- BASF Corporation: $316.5 million total ($312.5 million for class distribution plus $4 million for notice administration). Final approval entered November 22, 2024 (ECF 6407).
Combined nominal maximum across all four settlements: approximately $14.75 billion. These funds address PFAS detection, treatment, and monitoring at public water systems, and they far exceed the recovery secured in a prior contamination settlement over municipal drinking water. They provide no recovery for individuals alleging cancer, thyroid disease, or ulcerative colitis from PFAS exposure.
EPA Regulatory Actions and Remediation Economics
The regulatory backdrop operates on two parallel tracks that mirror the litigation's bifurcation. One governs drinking-water standards and cleanup obligations; the other shapes the economics of allocating remediation costs across defendants, water providers, and insurers.
- EPA finalized the PFAS National Primary Drinking Water Regulation on April 10, 2024 (effective June 25, 2024), establishing enforceable maximum contaminant levels of 4.0 parts per trillion for PFOA and PFOS, with MCLs of 10 ppt for PFHxS, PFNA, and HFPO-DA (GenX).
- EPA designated PFOA and PFOS as CERCLA hazardous substances on April 17, 2024 (effective July 8, 2024), and retained that designation in September 2025.
- On May 14, 2025, EPA announced it would retain the 4.0 ppt MCLs for PFOA and PFOS while extending compliance deadlines and reconsidering standards for other PFAS compounds. Two proposed rulemakings were published May 20, 2026, with the public comment period closing in July 2026.
For the personal injury track, these regulatory actions affect exposure proof and remediation economics. Individual tort causation still requires plaintiff-specific evidence.
Strategic Implications for Plaintiff, Defense, and Coverage Counsel
The PFAS contamination lawsuit docket presents distinct strategic considerations depending on counsel's role and which claim track is at issue. The settled water-provider claims offer a closed remediation model, while the personal injury docket still turns on bellwether sequencing, expert admissibility, and documentation compliance.
Plaintiff Counsel
The qualifying diagnosis must fall within one of CMO 33's six Listed Claims. CMO 37 (February 25, 2026) requires plaintiffs to substantiate the alleged injury with a medical or insurance diagnosis record submitted through the MDL portal.
Valuation cannot be anchored to the water settlement headlines. The PWS settlements resolved remediation costs calculated from PFAS detection levels and water system flow rates. Individual injury values will derive from bellwether verdicts that have not yet occurred. The court's bellwether pool distribution implies a causation-strength hierarchy that should inform tier-based valuation models.
Defense Counsel
CMO 35's characterization of potentially unvetted claims provides judicial authority for compliance enforcement under CMO 37's non-compliance procedures, which set cure periods for missing fact sheets or diagnosis records and allow defendants to move for dismissal of filings that remain deficient.
The C8 Science Panel, which studied only PFOA, carries specific vulnerabilities as a causation anchor. Its six probable-link findings were kidney cancer, testicular cancer, ulcerative colitis, thyroid disease, high cholesterol, and pregnancy-induced hypertension. MDL 2873's six Listed Claims do not map identically: they include liver cancer and thyroid cancer instead of high cholesterol and pregnancy-induced hypertension.
The Panel's "probable link" standard was a litigation-specific definition applied to a high-exposure population of 69,030 residents near DuPont's Washington Works plant, separate from traditional general causation methodology. Daubert challenges on general causation remain the primary pre-verdict defense tool.
Coverage Counsel
PWS reserves can be closed against known, allocated settlement amounts. Personal injury reserves face no bellwether verdict, no settlement matrix, and a court-acknowledged overhang of unfiled claims. The CERCLA hazardous substance designation strengthens pollution exclusion arguments under CGL policies while potentially triggering separate environmental impairment liability coverage. AFFF's decades-long use pattern implicates multiple policy years across several trigger theories depending on jurisdiction.
The 2026 Bellwether Reset and Case Strategy
Through mid-2026, no global personal injury settlement exists. The vacated kidney cancer bellwether has not been rescheduled. The bellwether structure established under CMO 26 continues through case-specific proceedings, and Daubert briefing on liver cancer and thyroid cancer has not produced any published ruling in accessible court records.
Three developments will control the next phase:
- Bellwether trial reset: Once rescheduled, the kidney cancer trial will establish the timeline for the first individual injury verdict in MDL 2873.
- Daubert rulings: Expert admissibility determinations across the six Listed Claims will shape settlement dynamics for the full docket.
- EPA rulemaking finalization: The proposed compliance extension and PFAS rescission rules, both open for comment through July 2026, will set the federal regulatory frame through at least 2031.
The water system settlements resolved the most administrable layer of the AFFF litigation: remediation costs with quantifiable inputs. The personal injury track, with no valuation anchor, represents the larger exposure, and its trajectory now depends on when the bellwether calendar resets and how the Daubert record develops across the six Listed Claims.
Triage by Claim Track Before Valuation
For practitioners, MDL 2873 reads as two dockets moving at different speeds. The public water system track is closed and quantified, while the personal injury track has no verdict, no settlement matrix, and a documentation standard, set by CMO 37, that now governs whether a claim survives. The operative discipline is early triage: confirm the diagnosis falls within the six Listed Claims, secure medical proof of the qualifying diagnosis, and model value against the bellwether pool's injury hierarchy rather than the water settlement headlines. Coverage analysis should treat the resolved remediation layer and the open injury overhang as distinct reserves, much as it would in other environmental mass torts. For a related MDL case analysis, see the Paraquat litigation analysis.
