No health-based violations on EPA record since 2016.
Serves about 5,250 people (5,200 connections) with surface water bought from City of Port Huron.
From EPA's record for MI0002385. PurityMap is independent of Fort Gratiot Township.
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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 November 2024 to August 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| 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 | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-11-13 to 2025-08-11 | UCMR5 Analytical Results: FORT GRATIOT TOWNSHIP (MI0002385) |
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 →Fort Gratiot Township's phone number on EPA record is 810-385-4489. Its mailing address is 3720 KEEWAHDIN RD, FORT GRATIOT, MI 48059.
According to EPA's record, Fort Gratiot Township uses surface water bought from City of Port Huron.
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 Gratiot Township's latest lead and copper round, which ended in December 2023, was 1.8 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Fort Gratiot Township. Its phone number on EPA record is 810-385-4489. Its mailing address on EPA record is 3720 KEEWAHDIN RD, FORT GRATIOT, MI 48059. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.