Photo: Ken Lund · CC BY-SA 2.0Living in San Luis, AZ: what to set up and who to call
An EPA health-based violation from 2021 is still open for the City of San Luis water system. Two school districts split the grades in San Luis: Yuma Union High School District and Somerton Elementary District.
I’m new in town
What to set up in San Luis, 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 San Luis.
Power comes from APS
APS (Arizona Public Service Co.), an investor-owned utility, serves all of San Luis. Its homes paid an average of 17.0¢ per kWh in 2025, about $165 a month (its average across Arizona).
Start or move service: aps.com
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of San Luis water system
The City of San Luis water system supplies San Luis: about 67% of residents live in its service area. Aspc Yuma serves another 13%. Cocopah West serves another 9%. About 10% 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 39,705 people in all.
2 health-based violations reported to EPA in the five years to October 2026: a groundwater treatment requirement (Groundwater Rule), disinfection byproducts (TTHM), the latest beginning Apr 2026. 83% of the 3,525 systems serving 10,001–50,000 people had none. 1 older violation is still open, since 2021: a bacteria testing requirement (Revised Total Coliform Rule), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 59% 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. AZ0414005.
6 home internet providers serve San Luis
100% of 8,439 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Allo Communications | Fiber | 100% | 2,300/2,300 |
| Spectrum | Cable, Fiber | 96% | 1,000/1,000 |
| CenturyLink | DSL, Fiber | 20% | 750/750 |
| Sun Valley Broadband | Fixed wireless | 97% | 50/10 |
| T-Mobile | Fixed wireless | 22% | 100/20 |
| AT&T | Fixed wireless | 19% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash and recycling in San Luis
Pickup days, the drop-off and recycling in San Luis, from the town’s own site.
We couldn’t find pickup days or drop-off hours. Check sanluisaz.gov →
From sanluisaz.gov, the town’s official site, checked Oct 21, 2026. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
San Luis is in two districts that split the grades: Yuma Union High School District and Somerton Elementary 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.
San Luis spans 2 ZIP codes
ZIP codes where San Luis residents live, with the share of the town in each.
| ZIP | Post office name | Share of San Luis | ZIP’s residents in San Luis |
|---|---|---|---|
| 85349 | San Luis, AZ | 80% | 100% |
| 85336 | Gadsden, AZ | 20% | 92% |
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 San Luis
Who supplies San Luis’ drinking water, and has it had violations?
The City of San Luis water system (EPA ID AZ0414005). It reported 2 health-based violations to EPA in the five years to October 2026: a groundwater treatment requirement (Groundwater Rule), disinfection byproducts (TTHM). 83% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in San Luis?
APS (Arizona Public Service Co.), an investor-owned utility. Its homes paid about 17.0¢ per kWh in 2025 (EIA).
What internet providers serve San Luis?
Allo Communications, Spectrum, CenturyLink, Sun Valley Broadband, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in San Luis?
85349 (80%), 85336 (20%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is San Luis in?
Yuma Union High School District and Somerton Elementary District. Parts of the city are in Gadsden Elementary District.
How do I register to vote in San Luis?
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 Yuma 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: San Luis’ own website (sanluisaz.gov), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.