Patuxent Naval Air Station (NAVFAC-WASH)
Published drinking-water records and contacts for Patuxent Naval Air Station (NAVFAC-WASH). System MD0180022. Review sources and dates; not a real-time water assessment.
- System ID
- MD0180022
- State or territory
- MD
- Published population served
- 22000
- System type (source code)
- CWS
Published records and dates
- PFAS / lithium (EPA UCMR 5): 780 — 2025-03-25 – 2025-09-16
- Lead and copper monitoring summaries: 15 — 1992-07-01 – 2025-12-31
- Maryland MDE PFAS study — Phase 2: 288 — 2021-03-03 – 2021-03-09
Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.
Published testing results
Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.
“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example
| Substance | Published result | Reporting limit | Sample date | Sampling location |
|---|---|---|---|---|
| 11Cl-PF3OUdS | < 0.005 µg/L | 0.005 µg/L | 2025-09-16 | Building 532 (Well 532B - 1P) / 1800000 |
| 4:2 FTS | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 590 (Well 5B) / TP05 |
| 6:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-09-16 | Building 526 Pump Station B (Well 2B & 3B & 4B) / TP02 |
| 8:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2025-09-16 | Building 574 (Well 3A) / TP03 |
| 9Cl-PF3ONS | < 0.002 µg/L | 0.002 µg/L | 2025-09-16 | Well 253 / TP6 |
| ADONA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 529 (Well 1B) / TP21 |
| HFPO-DA | < 0.005 µg/L | 0.005 µg/L | 2025-09-16 | Well 253 / TP6 |
| NEtFOSAA | < 0.005 µg/L | 0.005 µg/L | 2025-09-16 | Building 532 (Well 532B - 1P) / 1800000 |
| NFDHA | < 0.02 µg/L | 0.02 µg/L | 2025-09-16 | Building 532 (Well 532B - 1P) / 1800000 |
| NMeFOSAA | < 0.006 µg/L | 0.006 µg/L | 2025-09-16 | Building 526 Pump Station B (Well 2B & 3B & 4B) / TP02 |
| PFBA | < 0.005 µg/L | 0.005 µg/L | 2025-09-16 | Building 583 (Well 3C) / TP15 |
| PFBS | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 527 (Well 6B) / TP17 |
| PFDA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 529 (Well 1B) / TP21 |
| PFDoA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 590 (Well 5B) / TP05 |
| PFEESA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Well 253 / TP6 |
| PFHpA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 528 (Well 1C, 2C,4C) / TP04 |
| PFHpS | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 528 (Well 1C, 2C,4C) / TP04 |
| PFHxA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 532 (Well 532B - 1P) / 1800000 |
| PFHxS | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 583 (Well 3C) / TP15 |
| PFMBA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Building 587 (Well 5A) / TP16 |
| PFMPA | < 0.004 µg/L | 0.004 µg/L | 2025-09-16 | Building 527 (Well 6B) / TP17 |
| PFNA | < 0.004 µg/L | 0.004 µg/L | 2025-09-16 | Building 532 (Well 532B - 1P) / 1800000 |
| PFOA | < 0.004 µg/L | 0.004 µg/L | 2025-09-16 | Billding525 Pump station A (522+524) / EP01 |
| PFOS | < 0.004 µg/L | 0.004 µg/L | 2025-09-16 | Building 528 (Well 1C, 2C,4C) / TP04 |
| PFPeA | < 0.003 µg/L | 0.003 µg/L | 2025-09-16 | Well 253 / TP6 |
| PFPeS | < 0.004 µg/L | 0.004 µg/L | 2025-09-16 | Officer's Club (Well 617-1Q) / TP07 |
| PFTA | < 0.008 µg/L | 0.008 µg/L | 2025-09-16 | Building 528 (Well 1C, 2C,4C) / TP04 |
| PFTrDA | < 0.007 µg/L | 0.007 µg/L | 2025-09-16 | Building 590 (Well 5B) / TP05 |
| PFUnA | < 0.002 µg/L | 0.002 µg/L | 2025-09-16 | Officer's Club (Well 617-1Q) / TP07 |
| lithium | < 9 µg/L | 9 µg/L | 2025-09-16 | Building 590 (Well 5B) / TP05 |
Download all EPA UCMR 5 records (CSV)
Lead and copper: 90th-percentile summaries
These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0 mg/L | 2023-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | -0.002 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2013-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0.003 mg/L | 2010-01-01 – 2012-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2007-01-01 – 2009-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2006-01-01 – 2006-12-31 | 2026Q3 |
| Lead (PB90) | 0.003 mg/L | 2003-01-01 – 2005-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| 11Cl-PF3OUdS | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| 9Cl-PF3ONS | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| ADONA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| HFPO-DA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| N-EtFOSAA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| N-MeFOSAA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| PFBS | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| PFDA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| PFDoA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| PFHpA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| PFHxA | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
| PFHxS | Below a limit; numeric threshold unavailable ppt | 2021-03-09 | USNAS 1A BLDG 522 NOPERMIT / Maryland MDE PFAS study — Phase 2 |
State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.
Download state records with source notes (CSV)
Published compliance history
23 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2023-06-01 – 2023-08-31 | Resolved | No | 2026Q3 |
| Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R | 2022-10-01 – — | Resolved | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2022-01-01 – 2022-12-31 | Resolved | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 2020-01-01 – 2022-12-31 | Resolved | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1996-01-01 – 1998-12-31 | Archived | No | 2026Q3 |
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
- Maryland MDE PFAS study — Phase 2 — last successful check: 2026-10-16
Administrative contact (EPA filing)
Kriner, Katie: 443-477-1919
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.