Living in Fort Belknap Agency, MT: what to set up and who to call
Fort Belknap Agency Water System reported 27 health-based violations to EPA in the last five years: organic carbon removal (total organic carbon) ×14, disinfection byproducts (TTHM) ×13. 78% of systems its size reported none. Fort Belknap Agency has no town government of its own, so Blaine County runs its elections and most services, and its children attend Harlem Elementary School District.
I’m new in town
What to set up in Fort Belknap Agency, 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 Fort Belknap Agency.
Power comes from NorthWestern Energy
NorthWestern Energy (NorthWestern Energy LLC - (MT)), an investor-owned utility, serves 99.2% of Fort Belknap Agency residents. Its homes paid an average of 14.4¢ per kWh in 2025, about $102 a month (its average across Montana, for customers on its standard service). Montana lets you buy power from another supplier; 0% of NorthWestern Energy’s home customers do, and NorthWestern Energy still delivers it.
Start or move service: northwesternenergy.com · (888) 467-2669
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Fort Belknap Agency Water System
Fort Belknap Agency Water System supplies Fort Belknap Agency: about 94% of residents live in its service area. About 6% 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 2,600 people in all.
27 health-based violations reported to EPA in the five years to October 2026: organic carbon removal (total organic carbon) ×14, disinfection byproducts (TTHM) ×13, the latest beginning Apr 2026. 78% of the 7,966 systems serving 1,001–3,300 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 52% 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. Violations are counted by the start of their compliance period. 083090041.
3 home internet providers serve Fort Belknap Agency
99% of 490 addresses can get 100/20 Mbps; 99% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Triangle Communications | Fiber | 99% | 100/20 |
| Verizon | Fixed wireless | 61% | 300/20 |
| T-Mobile | Fixed wireless | 24% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Fort Belknap Agency’s trash rules yet
Pickup rules, the dump and recycling in Fort Belknap Agency.
Where your child goes to school
Public school districts and the school path by grade.
Fort Belknap Agency is in two districts that split the grades: Harlem Elementary School District and Harlem High School District.
DSchool gradeSee 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
Fort Belknap Agency is unincorporated, so Blaine County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Fort Belknap Agency is in ZIP code 59526
ZIP codes where Fort Belknap Agency residents live, with the share of the town in each.
| ZIP | Post office name | Share of Fort Belknap Agency | ZIP’s residents in Fort Belknap Agency |
|---|---|---|---|
| 59526 | Harlem, MT | 100% | 59% |
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 Fort Belknap Agency
Who supplies Fort Belknap Agency’s drinking water, and has it had violations?
Fort Belknap Agency Water System (EPA ID 083090041). It reported 27 health-based violations to EPA in the five years to October 2026: organic carbon removal (total organic carbon) ×14, disinfection byproducts (TTHM) ×13. 78% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Fort Belknap Agency?
NorthWestern Energy (NorthWestern Energy LLC - (MT)), an investor-owned utility. Its homes paid about 14.4¢ per kWh in 2025 (EIA).
What internet providers serve Fort Belknap Agency?
Triangle Communications, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Fort Belknap Agency?
59526. Census 2020 ZIP Code Tabulation Areas.
What school district is Fort Belknap Agency in?
Harlem Elementary School District and Harlem High School District.
How do I register to vote in Fort Belknap Agency?
Montana has no online registration; you can register in person up to and including Election Day or by mail (postmarked 30 days before). Elections here are run by the Blaine County Election Administrator. Check your registration at prodvoterportal.mt.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.