Bishop House · Photo: Chevsapher · CC0Living in Casper Mountain, WY: what to set up and who to call
The Broken Wrench LLC water system reported 7 health-based violations to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule) ×7. 78% of systems its size reported none. Casper Mountain has no town government of its own, so Natrona County runs its elections and most services, and its children attend Natrona County School District 1.
I’m new in town
What to set up in Casper Mountain, 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 Casper Mountain.
Power comes from Rocky Mountain Power
Rocky Mountain Power (PacifiCorp), an investor-owned utility, serves all of Casper Mountain. Its homes paid an average of 15.1¢ per kWh in 2025, about $107 a month (its average across Wyoming).
Start or move service: pacificorp.com · (888) 221-7070
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Broken Wrench LLC water system
The Broken Wrench LLC water system supplies Casper Mountain: about 19% of residents live in its service area. About 81% 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 30 people in all.
7 health-based violations reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule) ×7, the latest beginning Feb 2024. 78% of the 11,392 systems serving <=100 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2026, was 2.0 ppb, below the 15 ppb action level that applied. The highest in five years was 54.0 ppb. That’s higher than 71% 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. WY5600074.
Which providers serve Casper Mountain
This card will list the home internet providers the FCC’s National Broadband Map shows in Casper Mountain, 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 Casper Mountain’s trash rules yet
Pickup rules, the dump and recycling in Casper Mountain.
Where your child goes to school
Public school districts and the school path by grade.
Casper Mountain is in Natrona County 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
Casper Mountain is unincorporated, so Natrona 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.
Casper Mountain spans 2 ZIP codes
ZIP codes where Casper Mountain residents live, with the share of the town in each.
| ZIP | Post office name | Share of Casper Mountain | ZIP’s residents in Casper Mountain |
|---|---|---|---|
| 82601 | Casper, WY | 98% | 2% |
| 82604 | Casper, WY | 2% | 0% |
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 Casper Mountain
Who supplies Casper Mountain’s drinking water, and has it had violations?
The Broken Wrench LLC water system (EPA ID WY5600074). It reported 7 health-based violations to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule) ×7. 78% of systems its size had none. Its latest lead 90th percentile was 2.0 ppb (Jan–Dec 2026), against a 15 ppb action level.
Who provides electricity in Casper Mountain?
Rocky Mountain Power (PacifiCorp), an investor-owned utility. Its homes paid about 15.1¢ per kWh in 2025 (EIA).
What ZIP codes are in Casper Mountain?
82601 (98%), 82604 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Casper Mountain in?
Natrona County School District 1.
How do I register to vote in Casper Mountain?
Wyoming has no online registration; you can register in person up to and including Election Day or by mail (received 14 days before). Elections here are run by the Natrona County Clerk. Check your registration at sos.wyo.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.