COUNTY WATER-SYSTEM LEDGER
St. Clair, Michigan
EPA’s September 2026 export lists 14 active community water systems serving St. Clair, Michigan, with 2 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving St. Clair, Michigan
EPA associates 14 covered systems with St. Clair, Michigan; their reported population-served values total 105,835 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Port Huron, City OfMI0005480 | 28,983 | Surface water | No current violation flagged |
| Port Huron TownshipMI0005490 | 10,654 | Surface water purchased | Current monitoring/reporting flag |
| Marysville, City OfMI0004160 | 9,959 | Surface water | No current violation flagged |
| Clay TownshipMI0001450 | 9,866 | Surface water purchased | No current violation flagged |
| Ira TownshipMI0003390 | 6,510 | Surface water | No current violation flagged |
| St. Clair Water And Sewer AuthorityMI0006284 | 5,847 | Surface water | No current violation flagged |
| St. Clair, City OfMI0006270 | 5,464 | Surface water | No current violation flagged |
| Fort Gratiot TownshipMI0002385 | 5,250 | Surface water purchased | No current violation flagged |
| Kimball TownshipMI0003628 | 5,170 | Surface water purchased | Other current violation flag |
| Marine CityMI0004090 | 4,652 | Surface water | No current violation flagged |
| Algonac, City OfMI0000110 | 4,110 | Surface water | No current violation flagged |
| St. Clair TownshipMI0006282 | 3,270 | Surface water purchased | No current violation flagged |
| Cottrellville TownshipMI0001650 | 3,200 | Surface water purchased | No current violation flagged |
| Burtchville TownshipMI0001008 | 2,900 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for St. Clair, Michigan
EPA classifies 14 systems serving St. Clair, Michigan across 2 primary-source categories; Surface water is the largest category with 7 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.