Pensacola sits on Florida’s Gulf Coast with white-sand beaches and a deep military history. But beneath the surface — literally — there’s a contamination problem that’s been building for decades. PFAS chemicals from Naval Air Station Pensacola have leached into the local groundwater, and residents are right to ask what that means for the water coming out of their taps.
The Military Base Connection
NAS Pensacola is one of the oldest naval installations in the country, dating back to 1826. For decades, the base used aqueous film-forming foam (AFFF) for firefighting training and emergency response. AFFF is extremely effective at putting out fuel fires — and it’s loaded with per- and polyfluoroalkyl substances, better known as PFAS.
These “forever chemicals” earned that nickname because they don’t break down in the environment. They persist in soil, migrate into groundwater, and can travel significant distances from the original contamination site. The Department of Defense has acknowledged AFFF use at hundreds of military installations across the country, and NAS Pensacola is among them.
According to the Department of Defense’s PFAS Task Force, testing at NAS Pensacola has confirmed PFAS concentrations in groundwater monitoring wells that exceed the EPA’s health advisory levels. The Navy has conducted site investigations under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) framework, and remedial actions are ongoing.
What’s in the Groundwater
The primary PFAS compounds of concern are PFOS (perfluorooctane sulfonate) and PFOA (perfluorooctanoic acid). These are the two most-studied PFAS chemicals, and both have been linked to serious health effects including certain cancers, thyroid disease, immune system suppression, and developmental problems in children.
In 2024, the EPA finalized its first-ever National Primary Drinking Water Regulation for PFAS, setting maximum contaminant levels (MCLs) of 4 parts per trillion (ppt) for both PFOS and PFOA individually. That’s an extraordinarily low threshold — parts per trillion is like measuring a single drop in 20 Olympic swimming pools.
Groundwater sampling near NAS Pensacola has detected PFOS and PFOA at levels well above those standards in some monitoring wells. The contamination plume extends beyond the base boundaries, which is the core concern for nearby residential areas.
Pensacola’s Public Water Supply
Here’s the important distinction that many residents miss: the Emerald Coast Utilities Authority (ECUA), which provides public water to most of the Pensacola metro area, sources its drinking water from the Sand and Gravel Aquifer. ECUA has stated that its finished drinking water meets all federal and state standards, including the new PFAS MCLs.
However, that doesn’t mean every resident is in the clear. Florida has a significant number of private wells, particularly in areas outside the ECUA service boundary. Homes on private wells near NAS Pensacola face the most direct risk from the contamination plume, because private wells aren’t subject to the same monitoring and treatment requirements as public water systems.
The Florida Department of Environmental Protection (FDEP) has been involved in oversight of the Navy’s cleanup activities, and some private well testing has been conducted in the areas surrounding the base. Residents whose wells have shown elevated PFAS levels have been offered alternative water supplies in some cases, though the scope of these programs has been a point of contention.
A Broader Contamination Picture
PFAS from NAS Pensacola isn’t the only water quality concern in the area. Escambia County has dealt with contamination from multiple sources over the years:
The Escambia Wood Treating Company Superfund site operated from 1942 to 1982, treating wood products with creosote and pentachlorophenol. The EPA placed it on the National Priorities List in 1994, and cleanup work has been extensive. Contaminated groundwater at this site contained polycyclic aromatic hydrocarbons (PAHs) and other hazardous compounds.
Agricultural runoff contributes nitrogen and other nutrients to local waterways, which can affect both surface water and shallow groundwater quality in rural parts of the county.
Stormwater management in a rapidly growing metro area presents ongoing challenges. Pensacola receives over 60 inches of rainfall annually, and impervious surfaces from development increase runoff that can carry pollutants into water bodies.
What the Data Shows
The EWG Tap Water Database lists several contaminants detected in ECUA’s treated water, including haloacetic acids and trihalomethanes — both of which are disinfection byproducts that form when chlorine reacts with organic matter in the water. These are common in virtually all chlorinated water systems and are regulated by the EPA under the Safe Drinking Water Act.
ECUA’s annual Consumer Confidence Reports show the utility consistently meeting federal drinking water standards. But “meeting standards” and “zero contaminants” aren’t the same thing. Federal standards represent a balance between health protection and what’s technically and economically feasible for water systems to achieve.
For PFAS specifically, the new 4 ppt MCLs for PFOS and PFOA will require public water systems to monitor and, if necessary, treat for these compounds. Large systems had until 2027 to comply, and ECUA has been proactive about testing.
What Residents Can Do
If you’re on ECUA public water, your utility is required to meet all federal drinking water standards and report results annually. You can request a copy of the Consumer Confidence Report or find it on ECUA’s website. That gives you a baseline understanding of what’s in your treated water.
If you’re on a private well near NAS Pensacola:
- Get your water tested. The FDEP or your county health department can direct you to certified laboratories. Test specifically for PFAS — standard water tests don’t include these compounds.
- Check whether the Navy’s site investigation has included your area. The Navy has established a public information program for affected communities.
- Don’t assume your well is clean because your neighbor’s well tested fine. Groundwater contamination plumes can be irregular, and well depth matters significantly.
For all Pensacola residents:
- Stay informed about the Navy’s remediation progress. Public meetings and information sessions are held periodically.
- Consider independent water testing if you have specific concerns about your household water quality, even on public water.
- Document any correspondence with the Navy or FDEP regarding water quality — this matters if cleanup programs expand.
Water Treatment Options
Not all home water treatment systems remove PFAS effectively. The technologies with the strongest track record for PFAS removal include:
Granular activated carbon (GAC) filters can reduce PFAS levels, particularly for longer-chain compounds like PFOS and PFOA. Whole-house GAC systems and under-sink units vary in effectiveness — look for NSF/ANSI 53 certification with specific PFAS reduction claims.
Reverse osmosis (RO) systems are highly effective at removing PFAS from drinking water. Point-of-use RO systems installed at the kitchen sink are the most common residential option. They waste some water in the filtration process but achieve PFAS removal rates above 90% in most cases.
Ion exchange resins designed specifically for PFAS removal are another option, though these are more commonly used in municipal treatment than residential applications.
Standard carbon pitcher filters and refrigerator filters provide some PFAS reduction, but their effectiveness varies widely and they may not bring levels below the new EPA MCLs if your source water has significant contamination.
The Bigger Picture
Pensacola’s situation isn’t unique. The Department of Defense has identified PFAS contamination at hundreds of military installations nationwide, and cleanup is a multi-billion-dollar, multi-decade undertaking. The 2024 PFAS drinking water standards were a major step forward in federal regulation, but implementation takes time.
For Pensacola residents, the practical reality is this: public water is monitored and treated, but if you’re on a private well anywhere near the base, testing is essential. And regardless of your water source, understanding what’s in your water puts you in the best position to protect your family.
If you’re concerned about your water quality, a certified water treatment professional can test your water and advise on solutions.