Photo: Marine 69-71 · CC BY-SA 4.0Living in Topock, AZ: what to set up and who to call
Golden Shores Water Company reported 3 health-based violations to EPA in the last five years: a bacteria testing requirement (Revised Total Coliform Rule) ×2, arsenic. 80% of systems its size reported none. Topock has no town government of its own, so Mohave County runs its elections and most services, and its children attend Colorado River Union High School District.
I’m new in town
What to set up in Topock, 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 Topock.
Power comes from UNS Electric
UNS Electric (UNS Electric, Inc), an investor-owned utility, serves all of Topock. Its homes paid an average of 17.0¢ per kWh in 2025, about $144 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 Golden Shores Water Company
Golden Shores Water Company supplies Topock: about 0% of residents live in its service area. About 100% 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 3,970 people in all.
3 health-based violations reported to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule) ×2, arsenic, the latest beginning Jun 2025. 80% of the 5,012 systems serving 3,301–10,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.7 ppb, below the 15 ppb action level that applied. The highest in five years was 7.9 ppb. That’s higher than 62% 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. AZ0408024.
2 home internet providers serve Topock
100% of 5 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| TWN Communications | Fiber | 100% | 1,000/1,000 |
| Verizon | Fixed wireless | 80% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Topock’s trash rules yet
Pickup rules, the dump and recycling in Topock.
Where your child goes to school
Public school districts and the school path by grade.
Topock is in two districts that split the grades: Colorado River Union High School District and Topock Elementary 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
Topock is unincorporated, so Mohave 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.
Topock is in ZIP code 86436
ZIP codes where Topock residents live, with the share of the town in each.
| ZIP | Post office name | Share of Topock | ZIP’s residents in Topock |
|---|---|---|---|
| 86436 | Topock, AZ | 100% | 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 Topock
Who supplies Topock’s drinking water, and has it had violations?
Golden Shores Water Company (EPA ID AZ0408024). It reported 3 health-based violations to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule) ×2, arsenic. 80% of systems its size had none. Its latest lead 90th percentile was 1.7 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Topock?
UNS Electric (UNS Electric, Inc), an investor-owned utility. Its homes paid about 17.0¢ per kWh in 2025 (EIA).
What internet providers serve Topock?
TWN Communications, Verizon (FCC, as of December 2025).
What ZIP codes are in Topock?
86436. Census 2020 ZIP Code Tabulation Areas.
What school district is Topock in?
Colorado River Union High School District and Topock Elementary District.
How do I register to vote in Topock?
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 Mohave 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.