Living in Rillito, AZ: what to set up and who to call
Rillito has no town government of its own, so Pima County runs its elections and most services, and its children attend Marana Unified District. Rillito Water Users Assoc reported one health-based violation to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024.
I’m new in town
What to set up in Rillito, 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 Rillito.
Power comes from Trico Electric Cooperative
Trico Electric Cooperative (Trico Electric Cooperative Inc), a cooperative utility, serves all of Rillito. Its homes paid an average of 14.3¢ per kWh in 2025, about $131 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 Rillito Water Users Assoc
Rillito Water Users Assoc supplies almost all of Rillito. It draws ground water and serves 165 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 77% of the 15,074 systems serving 101–500 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 12.0 ppb, below the 15 ppb action level that applied. That’s higher than 98% 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. AZ0410098.
Which providers serve Rillito
This card will list the home internet providers the FCC’s National Broadband Map shows in Rillito, 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 Rillito’s trash rules yet
Pickup rules, the dump and recycling in Rillito.
Where your child goes to school
Public school districts and the school path by grade.
Rillito is in Marana Unified District.
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
Rillito is unincorporated, so Pima County is the local government.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Rillito is in ZIP code 85654
ZIP codes where Rillito residents live, with the share of the town in each.
| ZIP | Post office name | Share of Rillito | ZIP’s residents in Rillito |
|---|---|---|---|
| 85654 | Rillito, AZ | 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 Rillito
Who supplies Rillito’s drinking water, and has it had violations?
Rillito Water Users Assoc (EPA ID AZ0410098). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 77% of systems its size had none. Its latest lead 90th percentile was 12.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Rillito?
Trico Electric Cooperative (Trico Electric Cooperative Inc), a cooperative utility. Its homes paid about 14.3¢ per kWh in 2025 (EIA).
What ZIP codes are in Rillito?
85654. Census 2020 ZIP Code Tabulation Areas.
What school district is Rillito in?
Marana Unified District.
How do I register to vote in Rillito?
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 Pima 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.