Living in Superior, IA: what to set up and who to call
Tap water in most of Superior comes from Superior Water System, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result below detection. The nearest library is Estherville Public Library, 6.0 miles away.
I’m new in town
What to set up in Superior, 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 Superior.
Power comes from Interstate Power and Light
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility, serves all of Superior. Its homes paid an average of 17.8¢ per kWh in 2025, about $131 a month (its average across Iowa).
Start or move service: alliantenergy.com · (319) 786-4411
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Superior Water System
Superior Water System supplies Superior: about 66% of residents live in its service area. About 34% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated surface water (EPA lists Iowa Lakes Regional Water - Osgood as seller) and serves 132 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 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. 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. IA3073001.
5 home internet providers serve Superior
100% of 83 addresses can get 100/20 Mbps; 98% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Superior Telephone Cooperative | Fiber | 98% | 100/20 |
| GigFire | Fixed wireless | 100% | 150/130 |
| Federated Rural Electric Association | Fixed wireless | 99% | 40/3 |
| Nextlink | Fixed wireless | 81% | 500/100 |
| T-Mobile | Fixed wireless | 70% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Superior’s trash rules yet
Pickup rules, the dump and recycling in Superior.
Where your child goes to school
Public school districts and the school path by grade.
Most of Superior (78%) is in Estherville Lincoln Central Community School District; parts are in Spirit Lake Community School District (22%).
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 Nov 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Superior is in ZIP code 51363
ZIP codes where Superior residents live, with the share of the town in each.
| ZIP | Post office name | Share of Superior | ZIP’s residents in Superior |
|---|---|---|---|
| 51363 | Superior, IA | 100% | 100% |
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 Superior
Who supplies Superior’s drinking water, and has it had violations?
Superior Water System (EPA ID IA3073001). 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 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Superior?
Interstate Power and Light (Interstate Power and Light Co), an investor-owned utility. Its homes paid about 17.8¢ per kWh in 2025 (EIA).
What internet providers serve Superior?
Superior Telephone Cooperative, GigFire, Federated Rural Electric Association, Nextlink, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Superior?
51363. Census 2020 ZIP Code Tabulation Areas.
What school district is Superior in?
Estherville Lincoln Central Community School District. Parts of the city are in Spirit Lake Community School District.
How do I register to vote in Superior?
In Iowa you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the Dickinson County Auditor. Check your registration at sos.iowa.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 National Broadband Map, as of December 2025.