Military PFAS Dataset: 723 DoD Installations vs Nearby Drinking-Water PFAS
Search a ZIP code or address to see the PFAS-assessed military installations near you, the community and on-base federal water systems serving those areas, and each system's latest EPA UCMR5 monitoring against the current federal limits. Proximity is geographic only, never a statement of cause.
Or browse the full interactive map or jump to every installation by state.
By TapWaterData Editorial. Data updated 2026-07-11. Sources: EPA UCMR5 federal PFAS monitoring and utility-reported water quality data. Free to cite under CC BY 4.0.
In total, this open dataset maps 2,762 water systems across 723 installations on the DoD PFAS assessment list, each paired with its latest EPA UCMR5 PFAS results against the current federal limits.
About these limits
We joined the U.S. Department of Defense list of 723 installations being assessed for PFAS to the community water systems whose service area overlaps or lies within 3 miles of the installation boundary, and paired each system with its latest EPA UCMR5 PFAS results against the current federal limits. This is a geographic proximity map, not a claim of cause. Everything below is free to cite under CC BY 4.0.
82 installations sit near a water system over the 4 ppt PFOA/PFOS limit
PFOA or PFOS measured above 4 parts per trillion — the enforceable April 2024 EPA maximum — in the water system's most recent UCMR5 sample.
4 ppt EPA limit12 ppt DoD off-base screening level
75 installations fall in the "DoD gap" — a nearby system at 4 to 12 ppt
PFOA or PFOS between 4 and 12 ppt in the latest UCMR5 sample: over the EPA limit but under the 12 ppt level the Department of Defense uses to trigger off-base interim action.
4 ppt EPA limit12 ppt DoD off-base screening level
175 installations sit near a detected PFAS whose limit is proposed for rescission
A UCMR5 detection of PFHxS, PFNA, HFPO-DA (GenX), or PFBS — the four compounds whose limits, together with the Hazard Index, the EPA proposed to rescind in 2026 (public comment closes July 20, 2026).
4 ppt EPA limit12 ppt DoD off-base screening level
Every located installation on one map
A dot for each installation we could locate to map coordinates, colored by the worst PFAS result among the water systems serving the surrounding area. Proximity is geographic only, never a statement of cause.
Continental United States shown; the interactive map also plots Alaska, Hawaii, and the territories.
- Exceeds an EPA limit
- Above EPA limit, below DoD action level
- Detected below the limit
- Non-detect
- Not tested
For journalists
This dataset is published under a Creative Commons Attribution 4.0 (CC BY 4.0) license — free to republish, chart, or build on with attribution to TapWaterData Editorial. Suggested citation: “TapWaterData Editorial, Military PFAS Dataset (updated 2026-07-11).”
Working a story on a specific installation, state, or compound? We can turn a same-day custom extract or a full CSV pull. Email hello@tapwaterdata.com with the subject “Military PFAS data request” and the installation or state you need.
Frequently asked questions
It is a free, citable join of three public federal datasets: the U.S. Department of Defense list of installations being assessed for PFAS, the community and on-base federal water systems whose service areas lie near those installations, and each system's latest EPA UCMR5 PFAS monitoring measured against the current federal drinking-water limits. TapWaterData Editorial maintains it and publishes it under a Creative Commons Attribution 4.0 (CC BY 4.0) license.
Purely by geographic proximity. For each installation the join tests three relationships in order and stops at the first match: the system's service area overlaps the installation boundary, the service area lies within 3 miles of the boundary, or — only when no service-area boundary is available — the system serves the same county. Proximity is geographic only; it is never a statement that an installation is the source of anything measured in a nearby system.
No. UCMR5 is the EPA's national monitoring program, not a compliance determination. A monitoring value above a limit is reported here as monitoring data, never as a violation. The only violation counts in the dataset come from EPA ECHO Safe Drinking Water Act records, which are a separate field.
The April 2024 EPA PFAS maximum contaminant levels are current, legally enforceable law — 4 ppt each for PFOA and PFOS and 10 ppt each for PFHxS, PFNA, and HFPO-DA (GenX), plus a Hazard Index of 1 for mixtures. In 2026 the EPA published two proposals: one proposes to rescind the PFHxS, PFNA, HFPO-DA, and PFBS determinations together with the Hazard Index, and a companion proposes to adjust PFOA and PFOS compliance timing. These are proposals, not final rules; the April 2024 limits remain in force unless and until any change is finalized. The public comment period closes July 20, 2026.
The dataset is published under CC BY 4.0, so you are free to republish, chart, or build on it with attribution to TapWaterData Editorial. A suggested citation is: TapWaterData Editorial, Military PFAS Dataset. Machine-readable CSV and JSON downloads and a full column dictionary are available on the dataset download page.
Sources
- U.S. Department of Defense PFAS PA/SI installation list — installations being assessed for PFAS use or potential release (progress as of September 30, 2025)
- U.S. Army Corps of Engineers (USACE) Military Installations, Ranges, and Training Areas (MIRTA) boundaries
- EPA ECHO Safe Drinking Water Act (SDWA) public water system records
- EPA UCMR5 (Fifth Unregulated Contaminant Monitoring Rule) national PFAS occurrence data — Feb 2026 release
- EPA PFAS National Primary Drinking Water Regulation (40 CFR 141 Subpart Z; Federal Register document 2024-07773, published April 26, 2024; EPA docket EPA-HQ-OW-2022-0114)
- utility-reported water quality data
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