Living in Three Points, AZ: what to set up and who to call
Three Points has no town government of its own, so Pima County runs its elections and most services, and its children attend Altar Valley Elementary District. Power in Three Points comes from Trico Electric Cooperative, a cooperative utility rather than a private company.
I’m new in town
What to set up in Three Points, 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 Three Points.
Power comes from Trico Electric Cooperative
Trico Electric Cooperative (Trico Electric Cooperative Inc), a cooperative utility, serves all of Three Points. 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 City of Tucson water system
The City of Tucson water system supplies Three Points: about 24% of residents live in its service area. Gw Ocotillo Water - Diamond Bell serves another 10%. Thim Water Company 2 serves another 9%. Metropolitan Dwid - E&t System serves another 7%. Gw Ocotillo Water - Valley View Acres serves another 7%. About 16% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water (EPA lists Marana Municipal - Picture Rocks as seller) and serves 732,906 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 93% of the 42 systems serving 500,001–1,000,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 0.6 ppb, below the 15 ppb action level that applied. That’s lower than 74% 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. AZ0410112.
Which providers serve Three Points
This card will list the home internet providers the FCC’s National Broadband Map shows in Three Points, 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 Three Points’ trash rules yet
Pickup rules, the dump and recycling in Three Points.
Where your child goes to school
Public school districts and the school path by grade.
Three Points is in Altar Valley Elementary District.
C−School gradeSee 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
Three Points 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.
Three Points spans 2 ZIP codes
ZIP codes where Three Points residents live, with the share of the town in each.
| ZIP | Post office name | Share of Three Points | ZIP’s residents in Three Points |
|---|---|---|---|
| 85736 | Tucson, AZ | 86% | 98% |
| 85735 | Tucson, AZ | 14% | 7% |
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 Three Points
Who supplies Three Points’ drinking water, and has it had violations?
The City of Tucson water system (EPA ID AZ0410112). It reported no health-based violations to EPA in the five years to October 2026; 93% of systems its size had none. Its latest lead 90th percentile was 0.6 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Three Points?
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 Three Points?
85736 (86%), 85735 (14%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Three Points in?
Altar Valley Elementary District.
How do I register to vote in Three Points?
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.