Living in Del Rio, CA: what to set up and who to call
Del Rio has no town government of its own, so Stanislaus County runs its elections and most services, and its children attend Modesto City High School District. Tap water in Del Rio comes from the City of Modesto - Del Rio water system, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Del Rio, 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 Del Rio.
Power comes from Modesto Irrigation District
Modesto Irrigation District (Modesto Irrigation District), a political subdivision utility, serves all of Del Rio. Its homes paid an average of 23.0¢ per kWh in 2025, about $173 a month (its average across California).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Modesto - Del Rio water system
The City of Modesto - Del Rio water system supplies Del Rio: about 92% of residents live in its service area. About 5% 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 1,327 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 people.
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. CA5010029.
8 home internet providers serve Del Rio
99% of 498 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable | 97% | 1,000/1,000 |
| AT&T | Fixed wireless, DSL | 84% | 50/10 |
| Cal.net | Fixed wireless | 100% | 100/20 |
| unWired Broadband | Fixed wireless | 100% | 400/50 |
| Verizon | Fixed wireless | 93% | 300/20 |
| T-Mobile | Fixed wireless | 87% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Del Rio’s trash rules yet
Pickup rules, the dump and recycling in Del Rio.
Where your child goes to school
Public school districts and the school path by grade.
Del Rio is in two districts that split the grades: Modesto City High School District and Stanislaus Union Elementary 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.
No town hall: the county runs things
Del Rio is unincorporated, so Stanislaus County is the local government.
Election office: FVAP local election office directory, updated Jul 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Del Rio is in ZIP code 95356
ZIP codes where Del Rio residents live, with the share of the town in each.
| ZIP | Post office name | Share of Del Rio | ZIP’s residents in Del Rio |
|---|---|---|---|
| 95356 | Modesto, CA | 100% | 4% |
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 Del Rio
Who supplies Del Rio’s drinking water, and has it had violations?
The City of Modesto - Del Rio water system (EPA ID CA5010029). It reported no health-based violations to EPA in the five years to October 2026; 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 Del Rio?
Modesto Irrigation District (Modesto Irrigation District), a political subdivision utility. Its homes paid about 23.0¢ per kWh in 2025 (EIA).
What internet providers serve Del Rio?
Spectrum, AT&T, Cal.net, unWired Broadband, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Del Rio?
95356. Census 2020 ZIP Code Tabulation Areas.
What school district is Del Rio in?
Modesto City High School District and Stanislaus Union Elementary School District.
How do I register to vote in Del Rio?
In California you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the Stanislaus County Clerk, Registrar of Voters. Check your registration at voterstatus.sos.ca.gov.
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 Nov 18, 2024 (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.