Living in Gravois Mills, MO: what to set up and who to call
Zwanzig MHP reported one health-based violation to EPA in the last five years: a groundwater treatment requirement (Groundwater Rule), beginning Nov 2024. Power in Gravois Mills comes from Co-Mo Electric Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Gravois Mills, 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 Gravois Mills.
Power comes from Co-Mo Electric Coop
Co-Mo Electric Coop (Co-Mo Electric Coop Inc), a cooperative utility, serves all of Gravois Mills. Its homes paid an average of 14.9¢ per kWh in 2025, about $167 a month (its average across Missouri).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Zwanzig MHP
Zwanzig MHP supplies Gravois Mills: about 40% of residents live in its service area. Red Oak Subdivision serves another 9%. About 51% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 50 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a groundwater treatment requirement (Groundwater Rule), beginning Nov 2024. 78% of the 11,392 systems serving <=100 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 2.0 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. MO3041171.
6 home internet providers serve Gravois Mills
100% of 94 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Co-Mo Connect | Fiber | 100% | 1,000/1,000 |
| Wave Internet Technologies | Fixed wireless | 100% | 100/100 |
| Wisper | Fixed wireless | 95% | 400/30 |
| Verizon | Fixed wireless | 85% | 25/6 |
| AT&T | Fixed wireless | 61% | 100/20 |
| T-Mobile | Fixed wireless | 59% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Gravois Mills’ trash rules yet
Pickup rules, the dump and recycling in Gravois Mills.
Where your child goes to school
Public school districts and the school path by grade.
Gravois Mills is in Morgan County R-II 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 Jan 2018; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Gravois Mills is in ZIP code 65037
ZIP codes where Gravois Mills residents live, with the share of the town in each.
| ZIP | Post office name | Share of Gravois Mills | ZIP’s residents in Gravois Mills |
|---|---|---|---|
| 65037 | Gravois Mills, MO | 100% | 3% |
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 Gravois Mills
Who supplies Gravois Mills’ drinking water, and has it had violations?
Zwanzig MHP (EPA ID MO3041171). It reported 1 health-based violation to EPA in the five years to October 2026: a groundwater treatment requirement (Groundwater Rule). 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Gravois Mills?
Co-Mo Electric Coop (Co-Mo Electric Coop Inc), a cooperative utility. Its homes paid about 14.9¢ per kWh in 2025 (EIA).
What internet providers serve Gravois Mills?
Co-Mo Connect, Wave Internet Technologies, Wisper, Verizon, AT&T, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Gravois Mills?
65037. Census 2020 ZIP Code Tabulation Areas.
What school district is Gravois Mills in?
Morgan County R-II School District.
How do I register to vote in Gravois Mills?
In Missouri you can register online until 27 days before Election Day, in person until 27 days before Election Day, or by mail (postmarked 27 days before). Elections here are run by the Morgan. Check your registration at voteroutreach.sos.mo.gov.
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 Nov 18, 2024 (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.