Photo: P199 · CC BY-SA 3.0Living in St. Clair Township, MI: what to set up and who to call
The City of St. Clair water system reported one health-based violation to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. Elections in St. Clair Township are run by St. Clair Township itself; register with the St Clair Township Clerk.
I’m new in town
What to set up in St. Clair Township, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in St. Clair Township.
Power comes from DTE
DTE (DTE Electric Co.), an investor-owned utility, serves all of St. Clair Township. Its homes paid an average of 20.2¢ per kWh in 2025, about $126 a month (its average across Michigan, for customers on its standard service). Michigan lets you buy power from another supplier; 0% of DTE’s home customers do, and DTE still delivers it.
Start or move service: www.dteenergy.com · (800) 477-4747
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of St. Clair water system
The City of St. Clair water system supplies St. Clair Township: about 34% of residents live in its service area. About 64% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water and serves 5,464 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 80% of the 5,012 systems serving 3,301–10,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 2.0 ppb, below the 15 ppb action level that applied. That’s higher than 67% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0 (EPA’s estimate). Violations are counted by the start of their compliance period. MI0006270.
6 home internet providers serve St. Clair Township
93% of 2,909 addresses can get 100/20 Mbps; 30% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable, Fiber | 85% | 2,000/2,000 |
| AT&T | Fixed wireless, DSL | 28% | 50/10 |
| Duke Broadband | Fiber | 21% | 1,000/100 |
| Frontier | DSL | 9% | 70/3 |
| T-Mobile | Fixed wireless | 58% | 100/20 |
| Verizon | Fixed wireless | 26% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have St. Clair Township’s trash rules yet
Pickup rules, the dump and recycling in St. Clair Township.
Where your child goes to school
Public school districts and the school path by grade.
Most of St. Clair Township (66%) is in East China School District; parts are in Marysville Public Schools (34%).
A−School gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Nov 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
St. Clair Township is in ZIP code 48079
ZIP codes where St. Clair Township residents live, with the share of the town in each.
| ZIP | Post office name | Share of St. Clair Township | ZIP’s residents in St. Clair Township |
|---|---|---|---|
| 48079 | Saint Clair, MI | 100% | 56% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in St. Clair Township
Who supplies St. Clair Township’s drinking water, and has it had violations?
The City of St. Clair water system (EPA ID MI0006270). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 80% of systems its size had none. Its latest lead 90th percentile was 2.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in St. Clair Township?
DTE (DTE Electric Co.), an investor-owned utility. Its homes paid about 20.2¢ per kWh in 2025 (EIA).
What internet providers serve St. Clair Township?
Xfinity, AT&T, Duke Broadband, Frontier, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in St. Clair Township?
48079. Census 2020 ZIP Code Tabulation Areas.
What school district is St. Clair Township in?
East China School District. Parts of the city are in Marysville Public Schools.
How do I register to vote in St. Clair Township?
In Michigan you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the St Clair Township Clerk. Check your registration at mvic.sos.state.mi.us.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Sep 12, 2025 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.