No health-based violations on EPA record since 2016.
Serves about 11,000 people (416 connections) with groundwater from its own wells.
From EPA's record for VA6099340. PurityMap is independent of Naval Support Facility, Dahlgren.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from April 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-23 to 2024-10-03 | UCMR5 Analytical Results: NAVAL SUPPORT FACILITY, DAHLGREN (VA6099340) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Naval Support Facility, Dahlgren's phone number on EPA record is 540-653-5071. Its mailing address is Dep of Navy, PWD South Patomac, 18329 Thompson Road Suite 226, DAHLGREN, VA 22448-5110.
According to EPA's record, Naval Support Facility, Dahlgren uses groundwater from its own wells.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Naval Support Facility, Dahlgren's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Naval Support Facility, Dahlgren. Its phone number on EPA record is 540-653-5071. Its mailing address on EPA record is Dep of Navy, PWD South Patomac, 18329 Thompson Road Suite 226, DAHLGREN, VA 22448-5110. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.