Photo: Andrew Filer from Seattle (ex-Minneapolis) · CC BY-SA 2.0Living in Harmon, ND: what to set up and who to call
Harmon has no town government of its own, so Morton County runs its elections and most services, and its children attend Mandan Public School District 1. Tap water in Harmon comes from Missouri West Water System, which has a clean five-year EPA record (about 20% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Harmon, 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 Harmon.
Power comes from Montana-Dakota Utilities
Montana-Dakota Utilities (Montana-Dakota Utilities Co), an investor-owned utility, serves all of Harmon. Its homes paid an average of 11.1¢ per kWh in 2025, about $92 a month (its average across North Dakota).
Start or move service: montana-dakota.com · (800) 638-3278
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Missouri West Water System
Missouri West Water System supplies almost all of Harmon. It buys treated surface water (EPA lists Omnd Water Treatment Plant and City of Mandan as sellers) and serves 4,303 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.0 ppb, below the 15 ppb action level that applied. 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. Violations are counted by the start of their compliance period. ND3001431.
4 home internet providers serve Harmon
100% of 96 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| BEK Communications Cooperative | Fiber | 100% | 5,000/5,000 |
| Midco | Cable | 91% | 2,000/350 |
| CenturyLink | DSL | 2% | 10/1 |
| T-Mobile | Fixed wireless | 44% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Harmon’s trash rules yet
Pickup rules, the dump and recycling in Harmon.
Where your child goes to school
Public school districts and the school path by grade.
Harmon is in Mandan Public School District 1.
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.
No town hall: the county runs things
Harmon is unincorporated, so Morton County is the local government.
Election office: FVAP local election office directory, updated Jun 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Jul 30, 2024.
Harmon is in ZIP code 58554
ZIP codes where Harmon residents live, with the share of the town in each.
| ZIP | Post office name | Share of Harmon | ZIP’s residents in Harmon |
|---|---|---|---|
| 58554 | Mandan, ND | 100% | 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 Harmon
Who supplies Harmon’s drinking water, and has it had violations?
Missouri West Water System (EPA ID ND3001431). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Harmon?
Montana-Dakota Utilities (Montana-Dakota Utilities Co), an investor-owned utility. Its homes paid about 11.1¢ per kWh in 2025 (EIA).
What internet providers serve Harmon?
BEK Communications Cooperative, Midco, CenturyLink, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Harmon?
58554. Census 2020 ZIP Code Tabulation Areas.
What school district is Harmon in?
Mandan Public School District 1.
How do I register to vote in Harmon?
North Dakota has no voter registration: you show ID at the polls. Elections here are run by the Morton County Auditor. Check your registration at vip.sos.nd.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 Jul 30, 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.