PFAS, TCE & Contaminated Water
PFAS & Contaminated Water Cancer Nexus Letters
PFAS 'forever chemicals' from firefighting foam and solvents like TCE in base water are linked to kidney, testicular, and other cancers — but most are not presumptive. That makes an individualized, evidence-based oncology opinion the difference for your claim.
- Board-Certified Radiation Oncologist
- Retired U.S. Army Lieutenant Colonel
- Enlisted Former NBC / CBRNE Specialist
- Board-Certified Radiation Oncologist
- Retired U.S. Army Lieutenant Colonel
- Enlisted Former NBC / CBRNE Specialist
Led by Dr. C.M. Williams, MD
Your Claim, Reviewed by a Cancer Specialist Who Served
Dr. Williams is a board-certified radiation oncologist and a retired U.S. Army Lieutenant Colonel. She has spent her career treating cancer and translating complex medicine into plain language — and she understands military service and toxic exposure from the inside.
That combination is rare in the nexus-letter world, where many opinions come from clinicians who never treated cancer. Your case is reviewed by a specialist physician who can speak to your cancer type, stage, and biology with authority — and write the medical reasoning the VA needs to see.
How a Nexus Opinion Helps
How a Nexus Opinion Helps Your PFAS Claim
Because most PFAS and solvent cancers are not broadly presumptive, these claims rise or fall on the strength of the medical reasoning. A specialty nexus opinion is where that case gets built.
Weighs your case against current science
Dr. Williams reviews your exposure history alongside the latest medical literature on PFAS and TCE and explains whether a connection to your specific cancer is medically supportable today.
Documents the exposure pathway
Firefighting foam (AFFF) and contaminated drinking water are the common routes of exposure on base. A clear opinion ties your duty history, MOS, and installation to a credible exposure pathway.
Builds the direct service-connection argument
Without a broad presumption to rely on, your claim usually needs a direct service-connection opinion. That individualized medical reasoning is exactly what a specialty review provides.
Exposure by Branch & MOS
PFAS & Solvent Exposure by Branch & MOS
The veterans with the heaviest PFAS and TCE exposure often share a common thread: firefighting, crash-rescue, maintenance, and degreasing work. Your MOS is central to documenting the pathway.
Air Force & Navy
Firefighters and crash-rescue crews who trained with and deployed AFFF firefighting foam, the leading source of PFAS exposure.
All branches
Service members stationed at installations where base drinking water was contaminated with PFAS or solvents like trichloroethylene (TCE).
Army & Marine Corps
Motor-pool, maintenance, and aircraft personnel with repeated foam and solvent (degreaser) exposure.
PFAS & TCE-Related Cancers We Review
The research linking these chemicals to specific cancers continues to evolve. Dr. Williams reviews these and other cancers where the medical evidence supports a connection.
- Kidney (renal cell) cancer
- Testicular cancer
- Bladder cancer
- Liver cancer
- Other cancers where the medical evidence supports a connection
Non-Presumptive Cancers
The Non-Presumptive Cancers Where Medicine Wins the Claim
Most PFAS and solvent cancers have no broad presumption — which is precisely why a specialty causation opinion is so valuable. These are the pairings a direct service-connection argument is built on.
PFOA / PFOS (PFAS)
Kidney (renal cell) cancer
Among the cancers most associated with PFAS — and not broadly presumptive, so a direct medical nexus opinion is usually required.
Trichloroethylene (TCE)
Kidney (renal) cancer
TCE in base water and degreasing operations is linked to renal cancer; these claims are generally non-presumptive and rest on the medical evidence.
PFAS in AFFF & water
Testicular cancer
Associated with PFAS exposure; reviewed individually for a supportable connection.
Most PFAS and solvent cancers are not yet broadly presumptive. That is exactly why an individualized, evidence-based opinion matters — these claims are won on the strength of the medicine, not a checklist.
Understanding PFAS & TCE Exposure
PFAS — per- and polyfluoroalkyl substances, often called 'forever chemicals' — were used in firefighting foam (AFFF) and have contaminated drinking water at many military installations. Trichloroethylene (TCE) and other solvents used for degreasing and maintenance have contaminated base water as well. Veterans who trained with or fought fires using AFFF, worked maintenance and motor-pool roles, or were stationed where base water was affected may carry significant exposure histories.
The science linking these chemicals to specific cancers is still developing, and most are not yet broadly presumptive. That makes a careful, evidence-based medical opinion especially important — one that weighs your exposure against the current literature to explain whether a connection is medically supportable in your case.
An Honest, Evidence-Based Opinion
A nexus letter never guarantees approval, and Dr. Williams will tell you candidly whether the medical evidence reasonably supports a connection in your case. A formal opinion is only provided when it does — and final decisions always rest with the U.S. Department of Veterans Affairs.
Frequently Asked Questions
PFAS, TCE & Contaminated Water Questions
Are PFAS or TCE cancers presumptive for VA claims?
Most PFAS- and TCE-related cancers are not yet broadly presumptive. That is precisely why an individualized nexus opinion matters so much — these claims generally depend on a direct service-connection argument supported by current medical evidence.
I was a firefighter and used AFFF foam. Does that count as exposure?
Firefighting foam (AFFF) is a well-documented source of PFAS exposure, especially for firefighters and crash-rescue personnel. A specialty review can connect your MOS and use of AFFF to a credible exposure pathway in your opinion.
My kidney cancer may be from TCE in the base water. Can you help?
TCE in base drinking water and degreasing operations is associated with renal (kidney) cancer. Because these claims are usually non-presumptive, a medical opinion tying your installation and exposure window to your diagnosis is often the deciding factor.
The science seems uncertain. Can a nexus letter still help?
Yes. An honest, evidence-based opinion reflects exactly where the current science stands and explains whether your specific case is medically supportable. Dr. Williams will tell you candidly whether the evidence reasonably supports a connection.
Does a consult guarantee a nexus letter?
No. The VA Case Strategy Consult helps determine whether a nexus opinion may be medically supportable. A formal opinion is only provided when the medical evidence reasonably supports a connection, and final decisions rest with the U.S. Department of Veterans Affairs.
Get in Touch
Have a Question About Your Case?
Send us a message and we’ll get back to you. If you’re ready to begin, you can also schedule a consult directly.