No health-based violations on EPA record since 2016.
Serves about 7,290 people (1,775 connections) with groundwater from its own wells.
From EPA's record for WA5352200. PurityMap is independent of JBLM Mcchord Field.
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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 May 2023 to September 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 5.3 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Lithium | 10.7 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 | 2023-05-08 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorohexanesulfonic acid (PFHxS) | 8 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 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 | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 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 | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 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 | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 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 | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 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 | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| 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 | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-18 to 2025-09-17 | UCMR5 Analytical Results: JBLM McChord Field (WA5352200) |
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 →According to EPA's record, JBLM Mcchord Field 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 JBLM Mcchord Field'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 JBLM Mcchord Field. Its mailing address on EPA record is PO Box 331051, Joint Base Lewis-McChord, WA 98433. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.