Living in Arivaca Junction, AZ: what to set up and who to call
Arivaca Junction has no town government of its own, so Pima County runs its elections and most services, and its children attend Sahuarita Unified District. Tap water in Arivaca Junction comes from Lakewood Estates Water Company, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Arivaca Junction, 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 Arivaca Junction.
Power comes from Trico Electric Cooperative
Trico Electric Cooperative (Trico Electric Cooperative Inc), a cooperative utility, serves all of Arivaca Junction. 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 Lakewood Estates Water Company
Lakewood Estates Water Company supplies Arivaca Junction: about 90% of residents live in its service area. Pita Water Company serves another 10%. It draws ground water and serves 722 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2024, 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. AZ0410063.
Which providers serve Arivaca Junction
This card will list the home internet providers the FCC’s National Broadband Map shows in Arivaca Junction, 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 Arivaca Junction’s trash rules yet
Pickup rules, the dump and recycling in Arivaca Junction.
Where your child goes to school
Public school districts and the school path by grade.
Arivaca Junction is in Sahuarita 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
Arivaca Junction 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.
Arivaca Junction is in ZIP code 85645
ZIP codes where Arivaca Junction residents live, with the share of the town in each.
| ZIP | Post office name | Share of Arivaca Junction | ZIP’s residents in Arivaca Junction |
|---|---|---|---|
| 85645 | Amado, AZ | 100% | 51% |
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 Arivaca Junction
Who supplies Arivaca Junction’s drinking water, and has it had violations?
Lakewood Estates Water Company (EPA ID AZ0410063). 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 0.0 ppb (Jan–Dec 2024), against a 15 ppb action level.
Who provides electricity in Arivaca Junction?
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 Arivaca Junction?
85645. Census 2020 ZIP Code Tabulation Areas.
What school district is Arivaca Junction in?
Sahuarita Unified District.
How do I register to vote in Arivaca Junction?
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.