How to File a PFAS Contamination Claim: A Step-by-Step Guide

Filing a PFAS personal injury claim can seem overwhelming — especially when you are also managing a serious health diagnosis. This guide breaks the process into clear, practical steps so you understand exactly what is required, what your attorney handles for you, and what you can do today to strengthen your case.

Step 1: Confirm Your Exposure History

The first step is documenting that you were exposed to PFAS at a level likely to cause harm. This means identifying your source of exposure and gathering evidence of it.

Public water system: Look up your water utility using the EPA's UCMR 5 database to see whether PFAS were detected in your system and at what levels. Request your utility's Consumer Confidence Reports (CCRs) for the past several years. If your state health department has conducted PFAS monitoring in your area, those records are also valuable. Document how long you lived at your address and obtained water from the affected system.

Military base: If you lived or worked on a military installation, the Department of Defense has published PFAS contamination data for hundreds of bases. The Environmental Working Group maintains a searchable database of military PFAS sites. Time on base — especially in housing near fire training areas — is your key exposure documentation.

Private well: If you were on a private well near a known contamination source, well water test results (from your local health department, a private lab, or state sampling programs) document your exposure. Neighbors' positive test results can also support your case.

Occupational exposure: If you worked in AFFF firefighting, PFAS manufacturing, food packaging, or other industries with significant PFAS use, occupational exposure records, union records, and employer documentation of the chemicals you worked with are relevant.

Step 2: Get a PFAS Blood Serum Test

If you have not already been tested, a blood serum PFAS test provides direct, objective evidence that PFAS entered your body. Elevated PFAS blood levels — particularly levels substantially above the general U.S. population baseline — strengthen the exposure component of your claim. Ask your doctor to order a PFAS serum panel, or consult with a commercial lab that offers direct testing. See our complete guide to PFAS blood testing for details.

Step 3: Secure Your Medical Records

Your medical records are the other half of your case. Gather:

• Diagnosis records: Pathology reports, imaging results, and notes from the specialist who diagnosed your condition. The diagnosis date is critical — it establishes when the legal "clock" started in many states.
• Prior medical history: Records from before your diagnosis that show when you were healthy. These help establish the timeline and rule out or contextualize pre-existing conditions that defendants may raise.
• Treatment records: All records of treatment — surgeries, chemotherapy, radiation, follow-up visits — establish the extent of your harm and form the basis for damages calculations.
• Primary care records: Annual physical exam notes, lab results, and other general health records from the years surrounding your diagnosis are useful context.

Step 4: Understand the Statute of Limitations

Every state has a statute of limitations — a legal deadline for filing a lawsuit. For PFAS personal injury cases, the typical limitation period is two to three years, but the starting point varies by state. In most states, the clock begins when you "knew or reasonably should have known" that your health condition was connected to PFAS exposure. In some states, it starts at diagnosis; in others, it may start from when you first learned your water was contaminated.

Do not assume you have plenty of time. PFAS contamination was widely publicized in many communities starting around 2016-2018. In states with strict discovery rules, time may already be running. If you have a PFAS-linked diagnosis and have not yet consulted an attorney, do so promptly.

Step 5: Select an Experienced PFAS Attorney

PFAS personal injury cases are complex mass tort matters. Choose a firm with demonstrated experience in pharmaceutical or chemical injury MDL cases. During a free consultation, ask:

• How many PFAS cases has the firm filed?
• Is the firm involved in MDL 2873 (the AFFF/PFAS MDL) leadership or co-counsel relationships with MDL firms?
• What is the contingency fee percentage, and how are litigation expenses handled?
• What is the firm's communication process for keeping clients informed?

Your retainer agreement should clearly describe the contingency fee structure. You should never pay anything upfront — fees come only from any recovery in your case.

Step 6: Your Attorney Files the Complaint

Once retained, your attorney will prepare and file a formal complaint in federal court. The complaint names the defendants (typically 3M, DuPont/Chemours, AFFF manufacturers, or other entities depending on your exposure source), describes your exposure, diagnosis, and damages, and asserts legal theories (negligence, failure to warn, strict products liability).

Most PFAS personal injury cases involving AFFF contamination are filed into MDL 2873, consolidated in the District of South Carolina before Judge Richard Gergel. Cases involving contamination from non-AFFF industrial sources may be filed in the district where you were exposed or where the defendant is located.

Step 7: Complete the Plaintiff Fact Sheet

The MDL requires each plaintiff to complete a Plaintiff Fact Sheet (PFS) — a thorough questionnaire about your exposure history, medical history, diagnosis, treatment, and damages. The PFS is a sworn statement and a critical document in the MDL process. Work carefully with your attorney to complete it accurately. Errors or omissions on the PFS can jeopardize your case.

Step 8: The Litigation Process

After your case is filed and the PFS is submitted, the MDL process takes over. Your case will proceed through:

• Common discovery: Shared document production from defendants and depositions of corporate witnesses, benefiting all plaintiffs collectively.
• Expert witness proceedings: General causation experts are retained, their reports produced, and Daubert challenges litigated.
• Bellwether selection: A small number of representative cases are selected for trial to test the evidence and damages valuation.
• Settlement negotiations: Bellwether outcomes drive global settlement discussions. Individual settlement offers are presented to each plaintiff based on a compensation matrix.

The full process can take several years. The most important contributions you can make are ensuring your records are complete, your PFS is accurate, and you stay in contact with your attorney throughout.