Living in Hilltop, TX: what to set up and who to call
An EPA health-based violation from 2024 is still open for the City of Dilley water system, which supplies Hilltop. Hilltop has no town government of its own, so Frio County runs its elections and most services, and its children attend Dilley Independent School District.
I’m new in town
What to set up in Hilltop, 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 Hilltop.
Power comes from Medina Electric Coop
Medina Electric Coop (Medina Electric Coop, Inc), a cooperative utility, serves all of Hilltop. Its homes paid an average of 12.5¢ per kWh in 2025, about $144 a month (its average across Texas).
Start or move service: medinaec.org · (866) 632-3532
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Dilley water system
The City of Dilley water system supplies almost all of Hilltop. It draws ground water and serves 4,505 people in all.
2 health-based violations reported to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule), a lead and copper treatment requirement (Lead and Copper Rule Revisions), the latest beginning Oct 2024. 80% of the 5,012 systems serving 3,301–10,000 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 2022–Dec 2024, was 0.5 ppb, below the 15 ppb action level that applied. That’s lower than 63% 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. TX0820001.
5 home internet providers serve Hilltop
100% of 135 addresses can get 100/20 Mbps; 99% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable | 87% | 1,000/1,000 |
| VTX1 | Fiber, Fixed wireless | 73% | 1,000/1,000 |
| Valley Telephone Cooperative | Fixed wireless, Fiber | 28% | 1,000/1,000 |
| Verizon | Fixed wireless | 80% | 300/20 |
| T-Mobile | Fixed wireless | 56% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Hilltop’s trash rules yet
Pickup rules, the dump and recycling in Hilltop.
Where your child goes to school
Public school districts and the school path by grade.
Hilltop is in Dilley 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
Hilltop is unincorporated, so Frio County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Hilltop is in ZIP code 78017
ZIP codes where Hilltop residents live, with the share of the town in each.
| ZIP | Post office name | Share of Hilltop | ZIP’s residents in Hilltop |
|---|---|---|---|
| 78017 | Dilley, TX | 100% | 6% |
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 Hilltop
Who supplies Hilltop’s drinking water, and has it had violations?
The City of Dilley water system (EPA ID TX0820001). It reported 2 health-based violations to EPA in the five years to October 2026: a bacteria testing requirement (Revised Total Coliform Rule), a lead and copper treatment requirement (Lead and Copper Rule Revisions). 80% of systems its size had none. Its latest lead 90th percentile was 0.5 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Hilltop?
Medina Electric Coop (Medina Electric Coop, Inc), a cooperative utility. Its homes paid about 12.5¢ per kWh in 2025 (EIA).
What internet providers serve Hilltop?
Spectrum, VTX1, Valley Telephone Cooperative, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Hilltop?
78017. Census 2020 ZIP Code Tabulation Areas.
What school district is Hilltop in?
Dilley Independent School District.
How do I register to vote in Hilltop?
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 Frio 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.