Living in St. David, AZ: what to set up and who to call
St. David has no town government of its own, so Cochise County runs its elections and most services, and its children attend St. David Unified District. The St David Dwid water system reported one health-based violation to EPA in the last five years: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024.
I’m new in town
What to set up in St. David, 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 St. David.
Power comes from Sulphur Springs Valley E C
Sulphur Springs Valley E C (Sulphur Springs Valley E C Inc), a cooperative utility, serves all of St. David. Its homes paid an average of 14.6¢ per kWh in 2025, about $107 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 St David Dwid water system
The St David Dwid water system supplies St. David: about 88% of residents live in its service area. Stratman Water Company serves another 9%. It draws ground water and serves 1,255 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 78% of the 7,966 systems serving 1,001–3,300 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, 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. AZ0402039.
4 home internet providers serve St. David
91% of 791 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Cox Communications | Cable | 74% | 1,000/35 |
| Integrated Elements Unlimited | Fixed wireless | 95% | 100/8 |
| Verizon | Fixed wireless | 88% | 300/20 |
| T-Mobile | Fixed wireless | 52% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have St. David’s trash rules yet
Pickup rules, the dump and recycling in St. David.
Where your child goes to school
Public school districts and the school path by grade.
St. David is in St. David Unified District.
BSchool 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
St. David is unincorporated, so Cochise 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.
St. David is in ZIP code 85630
ZIP codes where St. David residents live, with the share of the town in each.
| ZIP | Post office name | Share of St. David | ZIP’s residents in St. David |
|---|---|---|---|
| 85630 | Saint David, AZ | 100% | 63% |
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 St. David
Who supplies St. David’s drinking water, and has it had violations?
The St David Dwid water system (EPA ID AZ0402039). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in St. David?
Sulphur Springs Valley E C (Sulphur Springs Valley E C Inc), a cooperative utility. Its homes paid about 14.6¢ per kWh in 2025 (EIA).
What internet providers serve St. David?
Cox Communications, Integrated Elements Unlimited, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in St. David?
85630. Census 2020 ZIP Code Tabulation Areas.
What school district is St. David in?
St. David Unified District.
How do I register to vote in St. David?
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 Cochise 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.