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Tap water quality report

St. Clair Water and Sewer Authority

EPA monitoring tested this supplier for 31 contaminants and detected 1. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

31
contaminants tested
1
detected
5,847
people served
0
health-based violations
Michigan rankingsLead in MichiganPFAS in Michigan
Water source
Surface water
Ownership
Local government
Counties served
St. Clair

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2024
30 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
GRABSKI, JOHN
Phone
810-765-8879
Email
[email protected]

Frequently asked questions about St. Clair Water and Sewer Authority

Is St. Clair Water and Sewer Authority tap water safe to drink?

EPA monitoring detected 1 contaminant in St. Clair Water and Sewer Authority's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in St. Clair Water and Sewer Authority's water?

EPA monitoring detected Lead. The full list with the level and data source for each is above.

How many people does St. Clair Water and Sewer Authority serve?

St. Clair Water and Sewer Authority reports serving 5,847 people in Michigan, per its EPA record.

Has St. Clair Water and Sewer Authority had any water quality violations?

The EPA has no formal drinking-water violations on file for St. Clair Water and Sewer Authority.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.