Living in Olmito, TX: what to set up and who to call
Olmito has no town government of its own, so Cameron County runs its elections and most services, and its children attend Los Fresnos Consolidated Independent School District. Olmito WSC reported one health-based violation to EPA in the last five years: disinfection byproducts (TTHM), beginning Jul 2022.
I’m new in town
What to set up in Olmito, 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 Olmito.
Power comes from Magic Valley Electric Coop
Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility, serves all of Olmito. Its homes paid an average of 10.5¢ per kWh in 2025, about $140 a month (its average across Texas).
Start or move service: magicvalley.coop · (866) 225-5683
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Olmito WSC
Olmito WSC supplies almost all of Olmito. It draws surface water and serves 8,952 people in all.
1 health-based violation reported to EPA in the five years to October 2026: disinfection byproducts (TTHM), beginning Jul 2022. 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 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. TX0310026.
8 home internet providers serve Olmito
100% of 349 addresses can get 100/20 Mbps; 84% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 96% | 1,000/1,000 |
| Omni Fiber | Fiber | 76% | 10,000/10,000 |
| AT&T | DSL, Fiber, Fixed wireless | 30% | 10/1 |
| Smartcom Telephone | Fiber | 18% | 5,000/5,000 |
| RGV Communications | Fixed wireless | 100% | 100/100 |
| TS Network | Fixed wireless | 98% | 50/10 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Olmito’s trash rules yet
Pickup rules, the dump and recycling in Olmito.
Where your child goes to school
Public school districts and the school path by grade.
Olmito is in Los Fresnos Consolidated Independent School 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
Olmito is unincorporated, so Cameron County is the local government.
Election office: FVAP local election office directory, updated Jun 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Olmito is in ZIP code 78575
ZIP codes where Olmito residents live, with the share of the town in each.
| ZIP | Post office name | Share of Olmito | ZIP’s residents in Olmito |
|---|---|---|---|
| 78575 | Olmito, TX | 100% | 19% |
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 Olmito
Who supplies Olmito’s drinking water, and has it had violations?
Olmito WSC (EPA ID TX0310026). It reported 1 health-based violation to EPA in the five years to October 2026: disinfection byproducts (TTHM). 80% 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 Olmito?
Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility. Its homes paid about 10.5¢ per kWh in 2025 (EIA).
What internet providers serve Olmito?
Spectrum, Omni Fiber, AT&T, Smartcom Telephone, RGV Communications, TS Network (FCC, as of December 2025).
What ZIP codes are in Olmito?
78575. Census 2020 ZIP Code Tabulation Areas.
What school district is Olmito in?
Los Fresnos Consolidated Independent School District.
How do I register to vote in Olmito?
Texas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Cameron County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.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.