Living in Tierra Bonita, TX: what to set up and who to call
An EPA health-based violation from 2024 is still open for the City of Santa Rosa water system, which supplies Tierra Bonita. Tierra Bonita has no town government of its own, so Cameron County runs its elections and most services, and its children attend Santa Rosa Independent School District.
I’m new in town
What to set up in Tierra Bonita, 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 Tierra Bonita.
Power comes from Magic Valley Electric Coop
Magic Valley Electric Coop (Magic Valley Electric Coop Inc), a cooperative utility, serves all of Tierra Bonita. 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 City of Santa Rosa water system
The City of Santa Rosa water system supplies Tierra Bonita: about 62% of residents live in its service area. North Alamo WSC serves another 38%. About 5% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water and serves 2,883 people in all.
5 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×4, a lead and copper treatment requirement (Lead and Copper Rule Revisions), the latest beginning Jan 2026. 78% of the 7,966 systems serving 1,001–3,300 people had none. 1 older violation is still open, since 2024: a lead and copper treatment requirement (Lead and Copper Rule Revisions), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, 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. TX0310009.
6 home internet providers serve Tierra Bonita
100% of 39 addresses can get 100/20 Mbps; 84% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| VTX1 | Fixed wireless, Fiber | 100% | 1,000/1,000 |
| Spectrum | Cable | 59% | 1,000/1,000 |
| Frontier | Fiber | 46% | 7,000/7,000 |
| Verizon | Fixed wireless | 82% | 300/20 |
| AT&T | Fixed wireless | 69% | 25/3 |
| T-Mobile | Fixed wireless | 59% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Tierra Bonita’s trash rules yet
Pickup rules, the dump and recycling in Tierra Bonita.
Where your child goes to school
Public school districts and the school path by grade.
Tierra Bonita is in Santa Rosa 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
Tierra Bonita 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.
Tierra Bonita is in ZIP code 78593
ZIP codes where Tierra Bonita residents live, with the share of the town in each.
| ZIP | Post office name | Share of Tierra Bonita | ZIP’s residents in Tierra Bonita |
|---|---|---|---|
| 78593 | Santa Rosa, TX | 100% | 3% |
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 Tierra Bonita
Who supplies Tierra Bonita’s drinking water, and has it had violations?
The City of Santa Rosa water system (EPA ID TX0310009). It reported 5 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×4, a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Tierra Bonita?
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 Tierra Bonita?
VTX1, Spectrum, Frontier, Verizon, AT&T, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Tierra Bonita?
78593. Census 2020 ZIP Code Tabulation Areas.
What school district is Tierra Bonita in?
Santa Rosa Independent School District.
How do I register to vote in Tierra Bonita?
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.