When PFAS contamination reaches a community’s water supply, the financial consequences can extend well beyond the first round of testing. Water systems may need new treatment equipment, engineering work, ongoing monitoring, and years of maintenance.
Changes to federal drinking water rules can affect how utilities plan that work. However, giving a water system more time to comply does not remove contamination or answer the question of who should pay to address it.
For municipalities, utilities, and affected property owners, the cost may be covered through a combination of public funding, local budgets, financing, and recoveries from responsible parties. The available options depend on the circumstances.
At Stag Liuzza, our PFAS litigation attorneys help clients evaluate contamination-related claims and pursue accountability. Understanding the difference between regulatory requirements and legal responsibility is an important part of that process.
What Changes Has EPA Proposed for PFAS Drinking Water Rules?
As of October 2, 2026, the EPA pages reviewed for this article continue to describe two actions announced in May 2026 as proposed rules.
One proposal would allow qualifying drinking water systems to request an additional two years, until 2031, to comply with federal limits for PFOA and PFOS. It would retain the limits of 4.0 parts per trillion for each chemical and preserve the applicable monitoring and reporting schedule. US EPA
A separate proposal would rescind regulatory determinations and associated drinking water regulations for PFHxS, PFNA, HFPO-DA, commonly called GenX chemicals, and specified mixtures involving PFBS. EPA states that its proposal concerns the procedure used to establish those regulations. US EPA
A proposal is not a final change. Water systems should evaluate their current obligations rather than assuming that an announced extension or rescission is already effective.
Why a Compliance Deadline Does Not Decide Who Pays
A drinking water regulation sets requirements for the system delivering water. A contamination claim asks different questions about the parties allegedly responsible for the pollution and the resulting losses.
Those questions may include:
- Who manufactured or released the chemicals?
- How did contamination reach the water supply?
- What testing or treatment is necessary?
- Which expenses are connected to the contamination?
- What legal claims are available?
- Have any relevant claims already been settled or released?
Changing a regulatory deadline does not, by itself, resolve those issues.
A utility may need to plan infrastructure improvements while attorneys separately evaluate whether costs can be recovered from manufacturers or other responsible parties. The regulatory process and the legal investigation can move on different schedules.
What Does PFAS Cleanup Actually Cost?
“Cleanup” can describe several different kinds of work. Treating drinking water, addressing contaminated soil, and investigating a groundwater source are related tasks, but they are not interchangeable.
For a water system, potential expenses may include:
| Type of expense | What it may involve |
| Investigation and testing | Sampling water sources, laboratory analysis, and evaluating the extent of contamination |
| Engineering and planning | Selecting treatment options, designing facilities, and assessing alternatives |
| Construction | Installing equipment and modifying existing infrastructure |
| Operation and maintenance | Staffing, energy use, servicing equipment, and replacing treatment media |
| Waste management | Managing spent filters, media, or other materials containing captured PFAS |
| Continued monitoring | Checking treatment performance and tracking contamination over time |
The appropriate approach depends on the contaminants, water chemistry, system size, existing equipment, and other conditions.
EPA’s compliance-extension proposal itself recognizes the need for water-quality data, treatment planning, construction, financing, and a workforce capable of operating and maintaining improvements. US EPA
This is why a project budget should consider both installation and ongoing expenses. A treatment system can create costs long after construction is complete.
Who May Bear the Cost Initially?
A water system may need to spend money before a lawsuit or settlement produces a recovery.
Depending on its structure and available funding, the system may use reserves, grants, borrowing, or other sources. Costs that remain uncovered can put pressure on utility budgets and customers.
That financial pressure is especially important for communities with limited resources. Testing and treatment needs must be considered alongside existing infrastructure obligations and the affordability of water service.
Evaluating a water contamination claim can help a utility determine whether there is a supported legal route to recover expenses rather than relying entirely on local funding.
Can Federal Funding Help?
Public funding can be an important part of a community’s response.
In May 2026, EPA announced nearly $1 billion in grant funding to states through the Emerging Contaminants in Small or Disadvantaged Communities program to address PFAS and other emerging contaminants in drinking water. The agency also described technical assistance initiatives intended to help systems with testing, planning, and funding navigation. US EPA
However, a national funding announcement does not guarantee that a particular project will receive money or that every expense will be covered.
Water systems should determine:
- Which programs apply to their project.
- Whether the system meets eligibility requirements.
- Which expenses qualify.
- What application and reporting obligations exist.
- Whether the assistance is a grant or financing that must be repaid.
Public assistance can support necessary work while a legal claim is evaluated. Both approaches require careful planning.
Can Communities Recover Costs From PFAS Manufacturers?
Potentially, but recovery depends on the facts, applicable law, and any settlement terms.
An investigation may examine product records, contamination sources, environmental testing, and the expenses associated with addressing the pollution. Attorneys must also determine which parties may be liable and whether prior agreements affect the claims.
National PFAS litigation has provided a route for qualifying water systems to obtain settlement funds. For example, Stag Liuzza announced that Trenton Water Works secured approximately $11.3 million through nationwide PFAS litigation. The firm described planned investments in treatment systems, laboratory capabilities, and infrastructure reliability. stagliuzza.com
The Trenton Water Works recovery illustrates how litigation can help address a community’s financial needs.
It does not establish eligibility or a recovery amount for another system. Each potential claim requires its own review.
Do Drinking Water Rule Changes Eliminate Other Environmental Claims?
A change to one regulation should not be treated as a universal answer about environmental liability.
Federal drinking water standards operate under the Safe Drinking Water Act. Other environmental laws address different issues, including releases of hazardous substances and associated response costs.
For example, EPA designated PFOA and PFOS, including their salts and structural isomers, as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act, commonly called CERCLA or Superfund. That designation is a separate regulatory action from the drinking water proposals discussed above. US EPA
Whether CERCLA or another legal theory applies to a particular case requires a careful analysis. Relevant considerations can include the release, the parties involved, the costs incurred, and the governing legal requirements.
Our environmental pollution attorneys evaluate potential claims in the context of the full legal and factual picture.
Are Water Utilities Protected From Cleanup Liability?
EPA has published a PFAS enforcement discretion policy stating that it does not intend to pursue certain entities, including water utilities, where equitable factors do not support seeking CERCLA response actions or costs. The policy identifies other categories, including municipal landfills, municipal airports, farmers, and local fire departments. US EPA
An enforcement policy describes the agency’s approach. It should not be interpreted as blanket immunity from every potential claim or obligation.
A utility’s position may depend on its activities, the applicable law, and the claims being considered. Legal review can help distinguish the system’s regulatory duties, potential liabilities, and opportunities for recovery.
What About Homeowners With Contaminated Private Wells?
Homeowners using private wells may face their own testing and treatment expenses. Their options can differ from those available to public water systems.
For example, the 3M public water system settlement excludes private wells serving only the owner’s or tenant’s individual household. That exclusion determines eligibility for that particular settlement, rather than deciding whether a homeowner has another potential legal claim. www.pfaswatersettlement.com
A homeowner’s review may involve:
- Water testing results.
- The suspected contamination source.
- Property and residential history.
- Treatment expenses.
- Other documented losses.
If you are concerned about a private well, preserve testing records and notices. Discuss appropriate testing and exposure-reduction steps with qualified environmental or public health professionals, and seek legal advice about potential claims.
Should Water Systems Wait for EPA’s Final Decision?
Utilities need to follow current requirements and obtain appropriate technical and regulatory advice. They should also avoid assuming that uncertainty about future rules requires postponing every other decision.
Some work remains valuable regardless of a proposed deadline change:
Preserve Contamination Records
Keep sampling results, laboratory reports, source-water information, and communications concerning the discovery of PFAS.
Document Expenses
Maintain records of testing, engineering, treatment planning, construction, and ongoing costs. Identify which expenses relate specifically to contamination.
Evaluate Funding Opportunities
Review available programs and their requirements. Distinguish grant assistance from loans and other financing.
Review Settlement and Legal Deadlines
Regulatory compliance dates, settlement deadlines, and deadlines for filing legal claims serve different purposes. An extension in one process should not be assumed to extend another.
Assess the Full Project Budget
Consider operating, monitoring, maintenance, and waste-management expenses alongside construction costs.
These steps help a system make informed decisions while regulatory developments continue.
How Stag Liuzza Helps Communities Address PFAS Costs
The financial burden of contamination can be substantial even when a water system did not manufacture the chemicals responsible for it.
Stag Liuzza represents municipalities and public water systems in PFAS litigation. Its national work includes the Trenton Water Works recovery, and the firm has documented Michael Stag’s service on the Plaintiffs’ Executive Committee in the AFFF multidistrict litigation. stagliuzza.com
Our PFAS lawyers can review contamination concerns, relevant settlement terms, and potential claims. That review can help clients understand whether litigation may provide a route to recover documented losses.
Contact Stag Liuzza to discuss PFAS contamination affecting your water system, community, or property.
