Photo: Sociotard · CC BY 3.0Living in Iona, ID: what to set up and who to call
Tap water in Iona comes from Iona Water Dept, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result of 1.0 ppb. Bonneville County Library District - Iona, at 3548 N Main, is the library in town.
I’m new in town
What to set up in Iona, 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 Iona.
Power comes from Rocky Mountain Power
Rocky Mountain Power (PacifiCorp), an investor-owned utility, serves all of Iona. Its homes paid an average of 13.5¢ per kWh in 2025, about $120 a month (its average across Idaho).
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 Iona Water Dept
Iona Water Dept supplies almost all of Iona. It draws ground water and serves 2,717 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 52% 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. ID7100041.
9 home internet providers serve Iona
100% of 958 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Fybercom | Fixed wireless, Fiber | 100% | 10,000/10,000 |
| Sparklight | Cable, Fiber | 100% | 1,000/50 |
| Direct Communications Rockland | Fiber | 99% | 2,000/2,000 |
| CenturyLink | DSL | 53% | 80/10 |
| White Cloud Communications | Fixed wireless | 100% | 200/50 |
| Rise Broadband | Fixed wireless | 99% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Iona’s trash rules yet
Pickup rules, the dump and recycling in Iona.
Where your child goes to school
Public school districts and the school path by grade.
Iona is in Bonneville Joint School District 93.
B+School gradeSee 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.
Iona spans 2 ZIP codes
ZIP codes where Iona residents live, with the share of the town in each.
| ZIP | Post office name | Share of Iona | ZIP’s residents in Iona |
|---|---|---|---|
| 83427 | Iona, ID | 92% | 97% |
| 83401 | Idaho Falls, ID | 8% | 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 Iona
Who supplies Iona’s drinking water, and has it had violations?
Iona Water Dept (EPA ID ID7100041). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Iona?
Rocky Mountain Power (PacifiCorp), an investor-owned utility. Its homes paid about 13.5¢ per kWh in 2025 (EIA).
What internet providers serve Iona?
Fybercom, Sparklight, Direct Communications Rockland, CenturyLink, White Cloud Communications, Rise Broadband (FCC, as of December 2025).
What ZIP codes are in Iona?
83427 (92%), 83401 (8%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Iona in?
Bonneville Joint School District 93.
How do I register to vote in Iona?
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.