Photo: Pi3.124 · CC BY-SA 4.0Living in Geronimo, TX: what to set up and who to call
Springs Hill SUD reported 2 health-based violations to EPA in the last five years: disinfection byproducts (TTHM) ×2. 83% of systems its size reported none. Geronimo has no town government of its own, so Guadalupe County runs its elections and most services, and its children attend Navarro Independent School District.
I’m new in town
What to set up in Geronimo, 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 Geronimo.
Power comes from Pedernales Electric Coop
Pedernales Electric Coop (Pedernales Electric Coop, Inc), a cooperative utility, serves all of Geronimo. Its homes paid an average of 12.8¢ per kWh in 2025, about $153 a month (its average across Texas).
Start or move service: pec.coop · (830) 868-7155
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Springs Hill SUD
Springs Hill SUD supplies Geronimo: about 90% of residents live in its service area. About 8% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water (EPA lists Crwa Lake Dunlap WTP and Schertz Seguin Local Government Corporat and Crwa Wells Ranch as sellers) and serves 35,541 people in all.
2 health-based violations reported to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×2, the latest beginning Oct 2024. 83% of the 3,525 systems serving 10,001–50,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jul–Dec 2025, was 1.1 ppb, below the 15 ppb action level that applied. The highest in five years was 1.3 ppb. That’s higher than 51% 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. TX0940022.
7 home internet providers serve Geronimo
100% of 1,011 addresses can get 100/20 Mbps; 99% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Guadalupe Valley Electric Coop | Fixed wireless, Fiber | 100% | 1,000/1,000 |
| Spectrum | Fiber, Cable | 75% | 1,000/1,000 |
| AT&T | Fiber, Fixed wireless, DSL | 67% | 5,000/5,000 |
| Centric Fiber | Fiber | 53% | 1,000/1,000 |
| VTX1 | Fixed wireless | 98% | 400/50 |
| Verizon | Fixed wireless | 94% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Geronimo’s trash rules yet
Pickup rules, the dump and recycling in Geronimo.
Where your child goes to school
Public school districts and the school path by grade.
Geronimo is in Navarro Independent School District.
A−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
Geronimo is unincorporated, so Guadalupe 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.
Geronimo is in ZIP code 78155
ZIP codes where Geronimo residents live, with the share of the town in each.
| ZIP | Post office name | Share of Geronimo | ZIP’s residents in Geronimo |
|---|---|---|---|
| 78155 | Seguin, TX | 100% | 2% |
78115 is P.O. box or single-organization ZIP with no homes.
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 Geronimo
Who supplies Geronimo’s drinking water, and has it had violations?
Springs Hill SUD (EPA ID TX0940022). It reported 2 health-based violations to EPA in the five years to October 2026: disinfection byproducts (TTHM) ×2. 83% of systems its size had none. Its latest lead 90th percentile was 1.1 ppb (Jul–Dec 2025), against a 15 ppb action level.
Who provides electricity in Geronimo?
Pedernales Electric Coop (Pedernales Electric Coop, Inc), a cooperative utility. Its homes paid about 12.8¢ per kWh in 2025 (EIA).
What internet providers serve Geronimo?
Guadalupe Valley Electric Coop, Spectrum, AT&T, Centric Fiber, VTX1, Verizon (FCC, as of December 2025).
What ZIP codes are in Geronimo?
78155. Census 2020 ZIP Code Tabulation Areas.
What school district is Geronimo in?
Navarro Independent School District.
How do I register to vote in Geronimo?
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 Guadalupe 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.