Photo: zeesstof from The Woodlands, TX, USA · CC BY-SA 2.0Living in Superior, AZ: what to set up and who to call
Tap water in Superior comes from Arizona Water Co - Superior, which has a clean five-year EPA record (about 20% of systems its size had a health-based violation) and a latest lead result below detection. Power in Superior comes from Electrical Dist No3 Pinal County, a political subdivision utility rather than a private company.
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 Electrical Dist No3 Pinal County
Electrical Dist No3 Pinal County (Electrical Dist No3 Pinal County), a political subdivision utility, serves all of Superior. Its homes paid an average of 14.0¢ per kWh in 2025, about $162 a month (its average across Arizona).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Arizona Water Co - Superior
Arizona Water Co - Superior supplies almost all of Superior. It draws ground water and serves 4,393 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 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. Violations are counted by the start of their compliance period. AZ0411021.
Which providers serve Superior
This card will list the home internet providers the FCC’s National Broadband Map shows in Superior, 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 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.
Superior is in Superior Unified School District.
DSchool 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 Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Superior is in ZIP code 85173
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 |
|---|---|---|---|
| 85173 | Superior, AZ | 100% | 98% |
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?
Arizona Water Co - Superior (EPA ID AZ0411021). It reported no health-based violations to EPA in the five years to October 2026; 80% 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?
Electrical Dist No3 Pinal County (Electrical Dist No3 Pinal County), a political subdivision utility. Its homes paid about 14.0¢ per kWh in 2025 (EIA).
What ZIP codes are in Superior?
85173. Census 2020 ZIP Code Tabulation Areas.
What school district is Superior in?
Superior Unified School District.
How do I register to vote in Superior?
In Arizona you can register online until 29 days before Election Day, in person until 29 days before Election Day, or by mail (postmarked 29 days before). Elections here are run by the Pinal County Recorder. Check your registration at my.arizona.vote.
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): pending.