No health-based violations on EPA record since 2016.
Serves about 5,847 people (3,500 connections) with surface water from its own intake.
From EPA's record for MI0006284. PurityMap is independent of St. Clair Water and Sewer Authority.
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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 February 2025 to November 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| 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 | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-10 to 2025-11-10 | UCMR5 Analytical Results: ST. CLAIR WATER AND SEWER AUTHORITY (MI0006284) |
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 →St. Clair Water and Sewer Authority's phone number on EPA record is 810-765-8879. Its mailing address is 5111 RIVER RD, EAST CHINA, MI 48054.
According to EPA's record, St. Clair Water and Sewer Authority uses surface water from its own intake.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in St. Clair Water and Sewer Authority's latest lead and copper round, which ended in December 2024, was 8 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for St. Clair Water and Sewer Authority. Its phone number on EPA record is 810-765-8879. Its mailing address on EPA record is 5111 RIVER RD, EAST CHINA, MI 48054. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.