Living in Denton, MT: what to set up and who to call
An EPA health-based violation from 2014 is still open for the Town of Denton water system. Two school districts split the grades in Denton: Denton High School District and Denton Elementary School District.
I’m new in town
What to set up in Denton, 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 Denton.
Power comes from NorthWestern Energy
NorthWestern Energy (NorthWestern Energy LLC - (MT)), an investor-owned utility, serves all of Denton. 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 Town of Denton water system
The Town of Denton water system supplies Denton: about 84% of residents live in its service area. About 16% 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 255 people in all.
53 health-based violations reported to EPA in the five years to October 2026: a surface water treatment requirement (Long Term 2 Enhanced Surface Water Treatment Rule) ×35, a surface water treatment requirement (Surface Water Treatment Rule) ×18, the latest beginning May 2026. 77% of the 15,074 systems serving 101–500 people had none. 1 older violation is still open, since 2014: a surface water treatment requirement (Surface Water Treatment Rule), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 4.0 ppb, below the 15 ppb action level that applied. That’s higher than 87% 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. MT0000199.
1 home internet providers serve Denton
100% of 182 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Triangle Communications | Fiber | 100% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Denton’s trash rules yet
Pickup rules, the dump and recycling in Denton.
Where your child goes to school
Public school districts and the school path by grade.
Denton is in two districts that split the grades: Denton High School District and Denton Elementary 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 Sep 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Denton is in ZIP code 59430
ZIP codes where Denton residents live, with the share of the town in each.
| ZIP | Post office name | Share of Denton | ZIP’s residents in Denton |
|---|---|---|---|
| 59430 | Denton, MT | 100% | 52% |
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 Denton
Who supplies Denton’s drinking water, and has it had violations?
The Town of Denton water system (EPA ID MT0000199). It reported 53 health-based violations to EPA in the five years to October 2026: a surface water treatment requirement (Long Term 2 Enhanced Surface Water Treatment Rule) ×35, a surface water treatment requirement (Surface Water Treatment Rule) ×18. 77% of systems its size had none. Its latest lead 90th percentile was 4.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Denton?
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 Denton?
Triangle Communications (FCC, as of December 2025).
What ZIP codes are in Denton?
59430. Census 2020 ZIP Code Tabulation Areas.
What school district is Denton in?
Denton High School District and Denton Elementary School District.
How do I register to vote in Denton?
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 Fergus 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.