Tumacacori Museum · Photo: Ammodramus · CC0Living in Tumacacori-Carmen, AZ: what to set up and who to call
Tumacacori-Carmen has no town government of its own, so Santa Cruz County runs its elections and most services, and its children attend Santa Cruz Valley Unified District. Tap water in most of Tumacacori-Carmen comes from the Epcor - Tubac water system, 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 Tumacacori-Carmen, 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 Tumacacori-Carmen.
Water comes from Epcor - Tubac water system
The Epcor - Tubac water system supplies Tumacacori-Carmen: about 69% of residents live in its service area. Avalon Gardens Water System serves another 21%. Liberty Water Rio Rico serves another 10%. About 12% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 2,076 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 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. AZ0412001.
Which providers serve Tumacacori-Carmen
This card will list the home internet providers the FCC’s National Broadband Map shows in Tumacacori-Carmen, 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 Tumacacori-Carmen’s trash rules yet
Pickup rules, the dump and recycling in Tumacacori-Carmen.
Where your child goes to school
Public school districts and the school path by grade.
Tumacacori-Carmen is in Santa Cruz Valley 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
Tumacacori-Carmen is unincorporated, so Santa Cruz 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.
Tumacacori-Carmen spans 2 ZIP codes
ZIP codes where Tumacacori-Carmen residents live, with the share of the town in each.
| ZIP | Post office name | Share of Tumacacori-Carmen | ZIP’s residents in Tumacacori-Carmen |
|---|---|---|---|
| 85640 | Tumacacori, AZ | 99% | 96% |
| 85646 | Tubac, AZ | 1% | 0% |
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 Tumacacori-Carmen
Who supplies Tumacacori-Carmen’s drinking water, and has it had violations?
The Epcor - Tubac water system (EPA ID AZ0412001). 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.
What ZIP codes are in Tumacacori-Carmen?
85640 (99%), 85646 (1%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Tumacacori-Carmen in?
Santa Cruz Valley Unified District.
How do I register to vote in Tumacacori-Carmen?
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 Santa Cruz 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.
- 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.