No health-based violations on EPA record since 2016.
Serves about 22,000 people (832 connections) with groundwater from its own wells.
From EPA's record for MD0180022. PurityMap is independent of Patuxent Naval Air Station (Navfac-Wash).
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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 March 2025 to September 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 19.7 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 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 | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 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 | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 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 | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 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 | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 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 | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| 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 | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-25 to 2025-09-16 | UCMR5 Analytical Results: PATUXENT NAVAL AIR STATION (NAVFAC-WASH) (MD0180022) |
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 →Patuxent Naval Air Station (Navfac-Wash)'s phone number on EPA record is 443-477-1919. Its mailing address is Patuxent River Utiity Services, 21583 Shaw Road, PATUXENT RIVER, MD 20670.
According to EPA's record, Patuxent Naval Air Station (Navfac-Wash) uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 13 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Patuxent Naval Air Station (Navfac-Wash)'s latest lead and copper round, which ended in December 2016, was -2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Patuxent Naval Air Station (Navfac-Wash). Its phone number on EPA record is 443-477-1919. Its mailing address on EPA record is Patuxent River Utiity Services, 21583 Shaw Road, PATUXENT RIVER, MD 20670. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.