Photo: Traveler100 · CC BY-SA 3.0Living in Port Sanilac, MI: what to set up and who to call
Every home in Port Sanilac is in ZIP code 48469. Public schools here are run by Carsonville-Port Sanilac School District.
I’m new in town
What to set up in Port Sanilac, 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 Port Sanilac.
Power comes from DTE
DTE (DTE Electric Co.), an investor-owned utility, serves all of Port Sanilac. 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 Sanilac Township water system
The Sanilac Township water system supplies Port Sanilac: about 51% of residents live in its service area. Village of Port Sanilac serves another 38%. About 45% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated surface water (EPA lists Village of Lexington as seller) and serves 674 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 3.0 ppb, below the 15 ppb action level that applied. That’s higher than 81% 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. MI0005925.
7 home internet providers serve Port Sanilac
99% of 442 addresses can get 100/20 Mbps; 89% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 97% | 1,200/35 |
| Pigeon Telephone Company | Fiber | 87% | 1,000/1,000 |
| Air Advantage | Fixed wireless, Fiber | 34% | 10/1 |
| AT&T | DSL, Fixed wireless | 25% | 25/3 |
| Mercury Fiber | Fixed wireless | 90% | 150/20 |
| T-Mobile | Fixed wireless | 35% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Port Sanilac’s trash rules yet
Pickup rules, the dump and recycling in Port Sanilac.
Where your child goes to school
Public school districts and the school path by grade.
Port Sanilac is in Carsonville-Port Sanilac School District.
Test scores and every school: see 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.
Port Sanilac is in ZIP code 48469
ZIP codes where Port Sanilac residents live, with the share of the town in each.
| ZIP | Post office name | Share of Port Sanilac | ZIP’s residents in Port Sanilac |
|---|---|---|---|
| 48469 | Port Sanilac, MI | 100% | 47% |
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 Port Sanilac
Who supplies Port Sanilac’s drinking water, and has it had violations?
The Sanilac Township water system (EPA ID MI0005925). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 3.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Port Sanilac?
DTE (DTE Electric Co.), an investor-owned utility. Its homes paid about 20.2¢ per kWh in 2025 (EIA).
What internet providers serve Port Sanilac?
Xfinity, Pigeon Telephone Company, Air Advantage, AT&T, Mercury Fiber, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Port Sanilac?
48469. Census 2020 ZIP Code Tabulation Areas.
What school district is Port Sanilac in?
Carsonville-Port Sanilac School District.
How do I register to vote in Port Sanilac?
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 Sanilac 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.