Photo: Chris J · CC BY-SA 2.0Living in Maricopa, AZ: what to set up and who to call
Gw Santa Cruz Water Co reported one health-based violation to EPA in the last five years: a bacteria testing requirement (Revised Total Coliform Rule), beginning Aug 2025. Power in Maricopa comes from Electrical Dist No3 Pinal County, a political subdivision utility rather than a private company.
I’m new in town
What to set up in Maricopa, 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 Maricopa.
Power comes from Electrical Dist No3 Pinal County
Electrical Dist No3 Pinal County (Electrical Dist No3 Pinal County), a political subdivision utility, serves all of Maricopa. Its homes paid an average of 14.0¢ per kWh in 2025, about $162 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 Gw Santa Cruz Water Co
Gw Santa Cruz Water Co supplies almost all of Maricopa. It draws ground water and serves 84,000 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule), beginning Aug 2025. 90% of the 597 systems serving 50,001–100,000 people had none.
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. AZ0411131.
8 home internet providers serve Maricopa
99% of 25,079 addresses can get 100/20 Mbps; 98% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Cox Communications | Fiber | 95% | 1,000/35 |
| Orbitel Communications | Cable, Fiber | 93% | 5,000/5,000 |
| Quantum Fiber | Fiber, DSL | 68% | 8,000/8,000 |
| CenturyLink | DSL, Fiber | 28% | 140/20 |
| Verizon | Fixed wireless | 57% | 300/20 |
| Tristate Wi-Fi by Wi-Fiber | Fixed wireless | 45% | 400/150 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Maricopa’s trash rules yet
Pickup rules, the dump and recycling in Maricopa.
Where your child goes to school
Public school districts and the school path by grade.
Maricopa is in two districts that split the grades: Casa Grande Union High School District and Maricopa Unified School District.
B−School gradeSee 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.
Maricopa spans 2 ZIP codes
ZIP codes where Maricopa residents live, with the share of the town in each.
| ZIP | Post office name | Share of Maricopa | ZIP’s residents in Maricopa |
|---|---|---|---|
| 85138 | Maricopa, AZ | 79% | 98% |
| 85139 | Maricopa, AZ | 21% | 67% |
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.
Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Maricopa
Who supplies Maricopa’s drinking water, and has it had violations?
Gw Santa Cruz Water Co (EPA ID AZ0411131). It reported 1 health-based violation to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule). 90% 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 Maricopa?
Electrical Dist No3 Pinal County (Electrical Dist No3 Pinal County), a political subdivision utility. Its homes paid about 14.0¢ per kWh in 2025 (EIA).
What internet providers serve Maricopa?
Cox Communications, Orbitel Communications, Quantum Fiber, CenturyLink, Verizon, Tristate Wi-Fi by Wi-Fiber (FCC, as of December 2025).
What ZIP codes are in Maricopa?
85138 (79%), 85139 (21%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Maricopa in?
Casa Grande Union High School District and Maricopa Unified School District. Parts of the city are in Casa Grande Elementary District.
How do I register to vote in Maricopa?
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 Pinal 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.