Living in Seco Mines, TX: what to set up and who to call
Seco Mines has no town government of its own, so Maverick County runs its elections and most services, and its children attend Eagle Pass Independent School District. Power in Seco Mines comes from Rio Grande Electric Coop, a cooperative utility rather than a private company.
I’m new in town
What to set up in Seco Mines, 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 Seco Mines.
Power comes from Rio Grande Electric Coop
Rio Grande Electric Coop (Rio Grande Electric Coop, Inc), a cooperative utility, serves all of Seco Mines. Its homes paid an average of 18.3¢ per kWh in 2025, about $168 a month (its average across Texas).
Start or move service: riogrande.coop · (830) 563-2444
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Eagle Pass water system
The City of Eagle Pass water system supplies almost all of Seco Mines. It draws surface water and serves 54,900 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 90% of the 597 systems serving 50,001–100,000 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. TX1620001.
3 home internet providers serve Seco Mines
98% of 191 addresses can get 100/20 Mbps; 2% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 97% | 1,000/35 |
| T-Mobile | Fixed wireless | 87% | 100/20 |
| AT&T | Fixed wireless | 73% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Seco Mines’ trash rules yet
Pickup rules, the dump and recycling in Seco Mines.
Where your child goes to school
Public school districts and the school path by grade.
Seco Mines is in Eagle Pass 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
Seco Mines is unincorporated, so Maverick 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.
Seco Mines is in ZIP code 78852
ZIP codes where Seco Mines residents live, with the share of the town in each.
| ZIP | Post office name | Share of Seco Mines | ZIP’s residents in Seco Mines |
|---|---|---|---|
| 78852 | Eagle Pass, TX | 100% | 1% |
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 Seco Mines
Who supplies Seco Mines’ drinking water, and has it had violations?
The City of Eagle Pass water system (EPA ID TX1620001). It reported no health-based violations to EPA in the five years to October 2026; 90% 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 Seco Mines?
Rio Grande Electric Coop (Rio Grande Electric Coop, Inc), a cooperative utility. Its homes paid about 18.3¢ per kWh in 2025 (EIA).
What internet providers serve Seco Mines?
Spectrum, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Seco Mines?
78852. Census 2020 ZIP Code Tabulation Areas.
What school district is Seco Mines in?
Eagle Pass Independent School District.
How do I register to vote in Seco Mines?
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 Maverick 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.