Photo: Northernraider83 · CC BY-SA 4.0Living in Cavalier Township, ND: what to set up and who to call
Cavalier Township spans 2 ZIP codes; 58220 holds the most residents (97%). The closest ER is Pembina County Memorial Hospital, 4.4 miles away.
I’m new in town
What to set up in Cavalier Township, 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 Cavalier Township.
Power comes from Otter Tail Power
Otter Tail Power (Otter Tail Power Co), an investor-owned utility, serves all of Cavalier Township. Its homes paid an average of 11.1¢ per kWh in 2025, about $120 a month (its average across North Dakota).
Start or move service: ottertail.com · (866) 410-8780
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Northeast Rwd- North Valley Branch
Northeast Rwd- North Valley Branch supplies Cavalier Township: about 10% of residents live in its service area. About 86% 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 3,422 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 2023–Dec 2025, was 2.4 ppb, below the 15 ppb action level that applied. That’s higher than 75% 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. ND3401128.
3 home internet providers serve Cavalier Township
100% of 272 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Polar Telecommunications | Fiber | 100% | 1,000/1,000 |
| Verizon | Fixed wireless | 42% | 300/20 |
| T-Mobile | Fixed wireless | 7% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Cavalier Township’s trash rules yet
Pickup rules, the dump and recycling in Cavalier Township.
Where your child goes to school
Public school districts and the school path by grade.
Most of Cavalier Township (93%) is in Cavalier Public School District 6; parts are in North Border School District 100 (7%).
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 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Jul 30, 2024.
Cavalier Township spans 2 ZIP codes
ZIP codes where Cavalier Township residents live, with the share of the town in each.
| ZIP | Post office name | Share of Cavalier Township | ZIP’s residents in Cavalier Township |
|---|---|---|---|
| 58220 | Cavalier, ND | 97% | 23% |
| 58241 | Hensel, ND | 2% | 7% |
A few homes fall in 58265, 58236.
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 Cavalier Township
Who supplies Cavalier Township’s drinking water, and has it had violations?
Northeast Rwd- North Valley Branch (EPA ID ND3401128). 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 2.4 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Cavalier Township?
Otter Tail Power (Otter Tail Power Co), an investor-owned utility. Its homes paid about 11.1¢ per kWh in 2025 (EIA).
What internet providers serve Cavalier Township?
Polar Telecommunications, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Cavalier Township?
58220 (97%), 58241 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Cavalier Township in?
Cavalier Public School District 6. Parts of the city are in North Border School District 100.
How do I register to vote in Cavalier Township?
North Dakota has no voter registration: you show ID at the polls. Elections here are run by the Pembina 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.