Living in Flat Rock, MI: what to set up and who to call
The Flat Rock water system reported 2 health-based violations to EPA in the last five years: a surface water treatment requirement (Surface Water Treatment Rule) ×2. 83% of systems its size reported none. Flat Rock runs its own elections, so the Flat Rock City Clerk, not a county office, keeps the voter rolls.
I’m new in town
What to set up in Flat Rock, 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 Flat Rock.
Power comes from DTE
DTE (DTE Electric Co.), an investor-owned utility, serves all of Flat Rock. 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 Flat Rock water system
The Flat Rock water system supplies almost all of Flat Rock. It buys treated surface water (EPA lists Great Lakes Water Authority as seller) and serves 10,541 people in all.
2 health-based violations reported to EPA in the five years to October 2026: a surface water treatment requirement (Surface Water Treatment Rule) ×2, the latest beginning Aug 2025. 83% of the 3,525 systems serving 10,001–50,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2025, was 4.6 ppb, below the 15 ppb action level that applied. The highest in five years was 6.6 ppb. That’s higher than 89% 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. MI0002300.
5 home internet providers serve Flat Rock
100% of 3,681 addresses can get 100/20 Mbps; 28% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| AT&T | DSL, Fiber, Fixed wireless | 71% | 5,000/5,000 |
| Mercury Fiber | Fixed wireless | 89% | 150/20 |
| Verizon | Fixed wireless | 46% | 300/20 |
| T-Mobile | Fixed wireless | 36% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Flat Rock’s trash rules yet
Pickup rules, the dump and recycling in Flat Rock.
Where your child goes to school
Public school districts and the school path by grade.
Most of Flat Rock (79%) is in Flat Rock Community Schools; parts are in Gibraltar School District (13%) and Woodhaven-Brownstown School District (8%).
B−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.
Flat Rock spans 2 ZIP codes
ZIP codes where Flat Rock residents live, with the share of the town in each.
| ZIP | Post office name | Share of Flat Rock | ZIP’s residents in Flat Rock |
|---|---|---|---|
| 48134 | Flat Rock, MI | 98% | 43% |
| 48173 | Rockwood, MI | 2% | 1% |
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 Flat Rock
Who supplies Flat Rock’s drinking water, and has it had violations?
The Flat Rock water system (EPA ID MI0002300). It reported 2 health-based violations to EPA in the five years to October 2026: a surface water treatment requirement (Surface Water Treatment Rule) ×2. 83% of systems its size had none. Its latest lead 90th percentile was 4.6 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Flat Rock?
DTE (DTE Electric Co.), an investor-owned utility. Its homes paid about 20.2¢ per kWh in 2025 (EIA).
What internet providers serve Flat Rock?
Xfinity, AT&T, Mercury Fiber, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Flat Rock?
48134 (98%), 48173 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Flat Rock in?
Flat Rock Community Schools. Parts of the city are in Gibraltar School District and Woodhaven-Brownstown School District.
How do I register to vote in Flat Rock?
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 Flat Rock City 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.