Photo: Finetooth · CC BY-SA 3.0Living in McDermitt, NV: what to set up and who to call
McDermitt has no town government of its own, so Humboldt County runs its elections and most services, and its children attend Humboldt County School District. Mcdermitt Water System has a clean five-year EPA record, but its latest lead result, 6.2 ppb, was higher than 94% of similar systems’ (the action level is 15).
I’m new in town
What to set up in McDermitt, 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 McDermitt.
Power comes from Harney Electric Coop
Harney Electric Coop (Harney Electric Coop, Inc), a cooperative utility, serves all of McDermitt.
Start or move service: harneyelectric.org · (541) 573-2061
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Mcdermitt Water System
Mcdermitt Water System supplies McDermitt: about 11% of residents live in its service area. About 89% 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 200 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 6.2 ppb, below the 15 ppb action level that applied. That’s higher than 94% 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. NV0000162.
Which providers serve McDermitt
This card will list the home internet providers the FCC’s National Broadband Map shows in McDermitt, the share of addresses that can get 100/20 Mbps and the share with fiber, with the map’s “as of” date.
Source to come: FCC Broadband Data Collection.
We don’t have McDermitt’s trash rules yet
Pickup rules, the dump and recycling in McDermitt.
Where your child goes to school
Public school districts and the school path by grade.
McDermitt is in Humboldt County 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.
No town hall: the county runs things
McDermitt is unincorporated, so Humboldt County is the local government.
Election office: FVAP local election office directory, updated Nov 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
McDermitt is in ZIP code 89421
ZIP codes where McDermitt residents live, with the share of the town in each.
| ZIP | Post office name | Share of McDermitt | ZIP’s residents in McDermitt |
|---|---|---|---|
| 89421 | Mc Dermitt, NV | 100% | 27% |
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 McDermitt
Who supplies McDermitt’s drinking water, and has it had violations?
Mcdermitt Water System (EPA ID NV0000162). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 6.2 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in McDermitt?
Harney Electric Coop (Harney Electric Coop, Inc), a cooperative utility.
What ZIP codes are in McDermitt?
89421. Census 2020 ZIP Code Tabulation Areas.
What school district is McDermitt in?
Humboldt County School District.
How do I register to vote in McDermitt?
In Nevada you can register online until 5 days before Election Day, in person up to and including Election Day, or by mail (postmarked 28 days before). Elections here are run by the Humboldt County Clerk. Check your registration at nvsos.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): pending.