Palisades Dam and Powerplant Historic District · Public domainLiving in Irwin, ID: what to set up and who to call
Power in Irwin comes from Lower Valley Energy, a cooperative utility rather than a private company. For an emergency, Teton Valley Hospital is the closest ER, 24 miles away.
I’m new in town
What to set up in Irwin, 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 Irwin.
Power comes from Lower Valley Energy
Lower Valley Energy (Lower Valley Energy Inc), a cooperative utility, serves all of Irwin. Its homes paid an average of 7.8¢ per kWh in 2025, about $84 a month (its average across Idaho).
Start or move service: www.lvenergy.com · (307) 733-2446
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from The Centre at Rainey Creek water system
The The Centre at Rainey Creek water system supplies Irwin: about 2% of residents live in its service area. About 98% 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 129 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–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 3.0 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. ID7100226.
4 home internet providers serve Irwin
100% of 233 addresses can get 100/20 Mbps; 64% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Silver Star Communications | DSL, Fiber | 97% | 1,000/200 |
| Fybercom | Fixed wireless | 100% | 500/500 |
| Rise Broadband | Fixed wireless | 85% | 25/5 |
| T-Mobile | Fixed wireless | 3% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Irwin’s trash rules yet
Pickup rules, the dump and recycling in Irwin.
Where your child goes to school
Public school districts and the school path by grade.
Irwin is in Swan Valley Elementary School District 92.
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 Jul 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Irwin spans 2 ZIP codes
ZIP codes where Irwin residents live, with the share of the town in each.
| ZIP | Post office name | Share of Irwin | ZIP’s residents in Irwin |
|---|---|---|---|
| 83428 | Irwin, ID | 92% | 45% |
| 83449 | Swan Valley, ID | 8% | 7% |
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 Irwin
Who supplies Irwin’s drinking water, and has it had violations?
The The Centre at Rainey Creek water system (EPA ID ID7100226). 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 0.0 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Irwin?
Lower Valley Energy (Lower Valley Energy Inc), a cooperative utility. Its homes paid about 7.8¢ per kWh in 2025 (EIA).
What internet providers serve Irwin?
Silver Star Communications, Fybercom, Rise Broadband, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Irwin?
83428 (92%), 83449 (8%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Irwin in?
Swan Valley Elementary School District 92.
How do I register to vote in Irwin?
In Idaho you can register online until 11 days before Election Day, in person up to and including Election Day, or by mail (received 11 days before). Elections here are run by the Bonneville County Clerk. Check your registration at elections.sos.idaho.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 Sep 12, 2025 (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.