Does Living Near a Military Base Affect Your Drinking Water? PFAS and What Homebuyers Should Know

The Department of Defense has identified more than 700 military installations across the United States with confirmed or suspected PFAS contamination. The source in nearly every case is the same: aqueous film-forming foam, or AFFF — a firefighting chemical used on military airfields for decades that contains high concentrations of PFOS and PFOA, two of the most hazardous PFAS compounds.

For anyone buying or renting a home near a military installation, this is one of the most concrete and verifiable environmental risk factors you can check before closing. The data is public. The question is whether you looked it up.

Why Military Bases Are PFAS Hotspots

AFFF was developed in the 1960s and became the standard firefighting agent on military airfields because of how effectively it suppresses fuel fires. It was used in training exercises, stored in large quantities, and applied repeatedly over fire pits and training areas across generations of military facilities.

PFAS compounds — particularly PFOS and PFOA — are water-soluble and don't bind to soil very well. When AFFF was sprayed on training areas or stored in leaking tanks, the PFAS leached through the soil and entered groundwater. From there, it moved — slowly but persistently — through aquifers in every direction.

Unlike a spill that stays in one place, a PFAS groundwater plume from a military base can migrate miles from the source over years and decades. It can reach private wells, municipal water intakes, and streams that feed surface water supplies — all from a single source that operated miles away.

The DoD PFAS Installation List

The Department of Defense publishes an annual report listing installations with confirmed or suspected PFAS contamination. As of the most recent report, the list includes installations across every military branch — Army, Navy, Air Force, Marines, National Guard, and Reserve — in every U.S. state.

The data for each installation typically includes:

• PFAS status: confirmed release, suspected release, under investigation, or no confirmed release
• Investigation phase: where the site is in the cleanup and remediation process
• Service branch: which branch operates the installation

VetMyAddress loads this dataset directly and checks it by proximity to any address. If there's a military installation with documented PFAS issues within 5 miles, it appears in the PFAS section of your report — alongside the distance and status.

The 3-Mile Threshold

Distance matters significantly in PFAS groundwater migration. Contamination plumes move primarily with groundwater flow, which depends on local geology, precipitation patterns, and the volume of PFAS released. In some documented cases, contamination has reached drinking water supplies more than 10 miles from a military source. In others, the contamination stays closer to the installation.

A property within 3 miles of a confirmed PFAS release site from a military installation is in a range where independent well testing is not optional — it's the only way to know whether the contamination has reached that specific property. Beyond 5 miles, risk depends heavily on local hydrogeology, and a report is more useful as a flag to investigate further than as a direct risk assessment.

Private Wells vs. Municipal Water Near Military Bases

The distinction between private wells and municipal water is critical near military installations, for two reasons:

Municipal water systems have treatment options

If a municipal water utility draws from a source affected by military PFAS contamination, they are required to test under EPA's UCMR 5 program and disclose results to customers. They also have the ability to add treatment — granular activated carbon (GAC) and reverse osmosis are both effective at removing PFAS. Many utilities near military bases have already added treatment or are in the process of doing so.

Check the utility's UCMR 5 results (available through VetMyAddress or EPA's PFAS Analytic Tools) and their Consumer Confidence Report for information on PFAS levels and any remediation plans.

Private wells have no monitoring requirement

If the property has a private well, there is no regulatory requirement that it ever be tested for PFAS — at any distance from a military installation. The contamination could be present at concentrations above the federal MCL, and the homeowner might never know unless they test it.

For properties with private wells within 10 miles of any DoD PFAS installation — particularly on the downgradient side of the base relative to groundwater flow — a certified PFAS panel test is essential pre-purchase due diligence. A standard panel covers PFOA, PFOS, and related compounds and costs $150–$400 through a state-certified laboratory. The results typically come back within two weeks.

Documented PFAS Cases Near Military Bases

Several high-profile cases illustrate the geographic reach of military PFAS contamination:

• Tucson, AZ: PFAS from Davis-Monthan Air Force Base contaminated municipal drinking water for parts of the city, reaching the drinking water supply after migrating through groundwater.
• Pease Air Force Base, NH: PFAS from former AFFF use contaminated the drinking water supply for the city of Portsmouth, affecting thousands of residents before the contamination was detected. This became one of the landmark cases in PFAS awareness and military accountability.
• Camp Lejeune, NC: While primarily known for other contaminants, PFAS have also been documented at the site, which has the largest military contamination litigation in U.S. history.
• Wurtsmith Air Force Base, MI: PFAS contamination from the former base spread into groundwater that supplies private wells in surrounding communities, affecting homeowners who were unaware of the source.

These cases are not outliers — they are the documented end of a larger contamination story that is still being mapped by EPA and DoD investigations nationwide.

What to Look for in Your Report

When VetMyAddress runs a PFAS check for an address near a military installation, the report shows:

• DoD installation name and distance — which installation was found within 5 miles and how far it is
• PFAS status — confirmed release, suspected, under investigation, or no confirmed release
• Whether any installation is within 3 miles — the threshold where risk is treated as elevated in our scoring
• UCMR 5 results for the municipal water system — if the property is on municipal water, this shows whether the utility has PFAS detections and whether any exceed the 2024 federal MCL

Questions to Ask Before Buying Near a Military Base

• Is the property on a private well or municipal water? The answer determines whether EPA monitoring data applies or whether independent testing is required.
• Which base is nearby, and what is its PFAS investigation status?“Under investigation” is different from “no confirmed release” — the former means the answer is not yet known.
• Has the local municipality tested for PFAS? UCMR 5 data covers larger systems, but many utilities near bases have done additional voluntary testing. Check the Consumer Confidence Report.
• Has the state environmental agency issued any advisories?Several states have issued PFAS advisories for specific groundwater zones near military bases. Search “[state] PFAS drinking water advisory military” to find these.
• If there's a private well: when was it last tested, and for what?Seller disclosures rarely include PFAS because there's been no routine testing requirement. A PFAS panel before closing is non-negotiable for wells near DoD sites.

The Bottom Line

Military installations are not generically dangerous to live near. Most active bases are moving toward remediation, and the presence of a military installation does not automatically mean a property's water is contaminated. But confirmed PFAS releases at a nearby installation — especially one within 3 miles of a property with a private well — represent a specific, verifiable risk factor that deserves a specific, verifiable answer before you close.

The data to check this exists. The VetMyAddress report surfaces the DoD installation list alongside UCMR 5 data for the matched water utility. The only remaining step for properties on private wells is a $150–$400 lab test. Do it before signing.