PFAS Settlement Deadlines: What Municipalities Risk Missing

PFAS settlement claims require source-specific testing, detailed documentation, and strict adherence to 2026 deadlines.

Municipalities that miss these deadlines will not receive settlement funds. After having already waived their right to file future lawsuits against 3M and DuPont over PFAS in drinking water contamination by not opting out of these settlements, this represents their only opportunity to secure funds from these manufacturers.

We are approaching a critical moment in the 3M and DuPont PFAS drinking water settlements. While billions of dollars remain available, access to that funding depends entirely on meeting a series of firm deadlines in 2026.

For many communities, the challenge is not awareness of the settlements—it is understanding what happens if key steps are delayed or missed. The claims process can take longer than expected, particularly when additional testing, historical data collection, and coordination across departments are required.

Why PFAS Settlement Deadlines Matter

The PFAS settlements represent more than $14 billion in available funding for public water systems that have detected PFAS in drinking water sources. But unlike traditional funding programs, these settlements operate within a fixed legal framework with defined deadlines and requirements.

That means:

• Deadlines are not flexible  

• Late submissions are not accepted  

• Missed claims cannot be revisited  

What happens if a municipality misses PFAS settlements deadlines?

If a municipality misses PFAS settlements deadlines or fails to correctly submit its claims, it will not receive settlement funds. Because municipalities that did not opt out have already waived their right to file future lawsuits against 3M and DuPont over PFAS drinking water contamination, this is their only opportunity to secure funding from these manufacturers.

For many municipalities, this represents a one-time opportunity to secure funding tied to contamination impacts that may otherwise need to be addressed through local budgets.

The Remaining Deadlines That Determine Funding Eligibility

For municipalities eligible under Phase 2 of the settlements, two key deadlines now determine access to funding:

• July 31, 2026 – Deadline to submit primary Action Fund claims  

• August 1, 2026 – Deadline to submit Special Needs Fund claims  

What is the most important PFAS settlement deadline?

The July 31, 2026 deadline for Action Fund claims is the primary deadline, as it determines whether a municipality will receive settlement funds at all.

The August 1 deadline applies to municipalities that already incurred PFAS-related costs and are seeking additional reimbursement through the Special Needs Fund, which can provide funding beyond primary claims.

Why Timing Is Often More Challenging Than Expected

On paper, the claims process appears straightforward: gather data, submit forms, and receive funding. In practice, many municipalities encounter delays well before submission.

Common challenges include:

• Coordinating across departments (utilities, legal, finance, leadership)  

• Locating historical data and documentation  

• Conducting additional PFAS testing at individual water sources  

• Interpreting settlement-specific requirements  

These steps often take longer than anticipated—especially when they are not started early.

How long does it take to prepare a PFAS settlement claim?

Preparing a PFAS settlement claim can take weeks to several months, depending on the availability of data, the need for additional testing, and coordination across departments.

Why Eligibility Alone Is Not Enough

Many municipalities assume that because they are included in the settlements, funding will follow automatically. In reality, eligibility only provides the opportunity to submit a claim—it does not guarantee payment.

To receive funds, municipalities must:

• Submit claims by the applicable deadlines  

• Provide complete and accurate documentation  

• Meet all settlement-specific requirements  

Even small errors or missing information can affect outcomes.

Does being eligible guarantee PFAS settlement funding?

No. Eligibility alone does not guarantee funding—municipalities must submit complete and accurate claims by the required deadlines to receive payment.

PFAS Settlements as a Funding Strategy

Beyond the claims process itself, many municipalities are beginning to view PFAS settlements as part of a broader funding strategy.

As infrastructure costs increase and federal funding remains uncertain, settlements can help:

• Offset treatment and remediation costs  

• Reduce pressure on ratepayers  

• Preserve municipal budgets for other priorities  

In some cases, settlement funds may allow communities to move forward with projects that would otherwise be delayed.

Can PFAS settlements help reduce infrastructure funding gaps?

Yes. PFAS settlements can provide funding that helps offset contamination-related costs, complementing traditional funding sources such as grants, bonds, or rate increases.

How Municipalities Are Approaching the Claims Process

As deadlines approach, municipalities are taking different approaches to managing the claims process.

Some are handling submissions internally, while others are seeking outside support to manage:

• Data organization and validation  

• Interpretation of settlement requirements  

• Identification of potential gaps in documentation  

Do municipalities need help preparing PFAS settlement claims?

Municipalities can prepare PFAS settlement claims independently, but many seek assistance to ensure accuracy, avoid errors, and improve the likelihood of securing full funding.

How SL Environmental Law Group Supports Municipalities

SL Environmental Law Group has been helping municipalities navigate the PFAS settlement process, to help them maximize their recovery potential.

This includes:

• Reviewing eligibility and registration  

• Helping organize and validate claim documentation  

• Providing recommendations to help optimize recovery under the settlements

• Supporting municipalities in aligning their claims with settlement requirements  

Because the settlements rely on detailed data and strict timelines, early coordination can help reduce the risk of delays or incomplete submissions.

Where to Find a Detailed Claims Preparation Guide

For a more detailed breakdown of what is required to submit a complete claim—including testing requirements, documentation, and data considerations—see our full guide here:

-->  PFAS Settlements Guide  

Conclusion: Deadlines Define the Opportunity

The PFAS settlements represent a significant funding opportunity—but one that is defined by timing.

Municipalities that understand the remaining deadlines, prepare early, and submit complete claims can secure their share of available funds. Those that miss required steps risk forfeiting the opportunity altogether—careful planning and experienced counsel can make the difference between a successful recovery and leaving money on the table.

As deadlines approach, making sure your claim is complete and submitted on time is critical. If you’d like to discuss your system, contact our team to schedule a conversation.

What should municipalities prioritize right now?

Municipalities should prioritize understanding applicable deadlines, organizing required data, and beginning the claims process early to avoid missing critical funding opportunities.

Looking Beyond Drinking Water

While the current settlements apply to drinking water, PFAS-related costs are not limited to that category.

Many municipalities are also evaluating impacts in:

• Wastewater treatment

• Biosolids management  

• Soil contamination (including airports and fire training sites)  

While these areas are not covered under current settlements and are continuing to be litigated as part of the ongoing PFAS multi-district litigation, they represent ongoing financial considerations that municipalities are beginning to track more closely.