Photo: Marine 69-71 · CC BY-SA 4.0Living in Duncan, AZ: what to set up and who to call
Tap water in most of Duncan comes from Hunter Water - Town of Duncan, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result below detection. Power in Duncan comes from Duncan Valley Elec Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Duncan, 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 Duncan.
Power comes from Duncan Valley Elec Coop
Duncan Valley Elec Coop (Duncan Valley Elec Coop, Inc), a cooperative utility, serves all of Duncan.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Hunter Water - Town of Duncan
Hunter Water - Town of Duncan supplies Duncan: about 55% of residents live in its service area. About 45% 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 125 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–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. AZ0406009.
4 home internet providers serve Duncan
92% of 388 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Valley Telecom Group | DSL | 100% | 45/10 |
| Verizon | Fixed wireless | 89% | 300/20 |
| T-Mobile | Fixed wireless | 81% | 100/20 |
| AT&T | Fixed wireless | 75% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Duncan’s trash rules yet
Pickup rules, the dump and recycling in Duncan.
Where your child goes to school
Public school districts and the school path by grade.
Duncan is in Duncan 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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 12, 2025.
Duncan is in ZIP code 85534
ZIP codes where Duncan residents live, with the share of the town in each.
| ZIP | Post office name | Share of Duncan | ZIP’s residents in Duncan |
|---|---|---|---|
| 85534 | Duncan, AZ | 100% | 28% |
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 Duncan
Who supplies Duncan’s drinking water, and has it had violations?
Hunter Water - Town of Duncan (EPA ID AZ0406009). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Duncan?
Duncan Valley Elec Coop (Duncan Valley Elec Coop, Inc), a cooperative utility.
What internet providers serve Duncan?
Valley Telecom Group, Verizon, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Duncan?
85534. Census 2020 ZIP Code Tabulation Areas.
What school district is Duncan in?
Duncan Unified District.
How do I register to vote in Duncan?
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 Greenlee 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.