Photo: DrStarbuck from Madison, WI, USA · CC BY 2.0Living in Casas Adobes, AZ: what to set up and who to call
Casas Adobes has no town government of its own, so Pima County runs its elections and most services, and its children attend Amphitheater Unified District. Nanini Branch Library, at 7300 N Shannon Rd, is the library in town.
I’m new in town
What to set up in Casas Adobes, 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 Casas Adobes.
Power comes from Tucson Electric Power
Tucson Electric Power (Tucson Electric Power Co), an investor-owned utility, serves all of Casas Adobes. Its homes paid an average of 14.9¢ per kWh in 2025, about $117 a month (its average across Arizona).
Start or move service: uns.com
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Metropolitan Dwid water system
The Metropolitan Dwid water system supplies Casas Adobes: about 72% of residents live in its service area. City of Tucson serves another 24%. About 3% 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 City of Tucson as seller) and serves 45,570 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.6 ppb, below the 15 ppb action level that applied. The highest in five years was 0.9 ppb. That’s lower than 64% 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. AZ0410076.
7 home internet providers serve Casas Adobes
100% of 26,374 addresses can get 100/20 Mbps; 4% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable, Fiber | 99% | 1,200/35 |
| CenturyLink | DSL, Fiber | 64% | 100/10 |
| Quantum Fiber | Fiber | 3% | 3,000/3,000 |
| Simply Bits | Fixed wireless | 100% | 100/30 |
| AT&T | Fixed wireless | 73% | 100/20 |
| Verizon | Fixed wireless | 63% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Casas Adobes’ trash rules yet
Pickup rules, the dump and recycling in Casas Adobes.
Where your child goes to school
Public school districts and the school path by grade.
Most of Casas Adobes (72%) is in Amphitheater Unified District; parts are in Marana Unified District (23%) and Flowing Wells Unified District (5%).
B+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
Casas Adobes 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.
Casas Adobes spans 3 ZIP codes
ZIP codes where Casas Adobes residents live, with the share of the town in each.
| ZIP | Post office name | Share of Casas Adobes | ZIP’s residents in Casas Adobes |
|---|---|---|---|
| 85741 | Tucson, AZ | 44% | 92% |
| 85704 | Tucson, AZ | 37% | 75% |
| 85742 | Tucson, AZ | 19% | 45% |
A few homes fall in 85718.
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 Casas Adobes
Who supplies Casas Adobes’ drinking water, and has it had violations?
The Metropolitan Dwid water system (EPA ID AZ0410076). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 0.6 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Casas Adobes?
Tucson Electric Power (Tucson Electric Power Co), an investor-owned utility. Its homes paid about 14.9¢ per kWh in 2025 (EIA).
What internet providers serve Casas Adobes?
Xfinity, CenturyLink, Quantum Fiber, Simply Bits, AT&T, Verizon (FCC, as of December 2025).
What ZIP codes are in Casas Adobes?
85741 (44%), 85704 (37%), 85742 (19%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Casas Adobes in?
Amphitheater Unified District. Parts of the city are in Marana Unified District and Flowing Wells Unified District.
How do I register to vote in Casas Adobes?
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 National Broadband Map, as of December 2025.