No health-based violations on EPA record since 2016.
Serves about 10,000 people (990 connections) with groundwater from its own wells.
From EPA's record for WI6420302. PurityMap is independent of Fort Mccoy North Post.
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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 January 2025 to July 2025.
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| 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 | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-22 to 2025-07-22 | UCMR5 Analytical Results: FORT MCCOY NORTH POST (WI6420302) |
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, Fort Mccoy North Post uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 4 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Fort Mccoy North Post's latest lead and copper round, which ended in September 2024, was 8 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Fort Mccoy North Post. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.