Living in South Mountain, TX: what to set up and who to call
Tap water in South Mountain comes from Mountain WSC, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection. Power in South Mountain comes from United Electric Coop Service, a cooperative utility rather than a private company.
I’m new in town
What to set up in South Mountain, 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 South Mountain.
Power comes from United Electric Coop Service
United Electric Coop Service (United Electric Coop Service Inc - (TX)), a cooperative utility, serves all of South Mountain. Its homes paid an average of 13.9¢ per kWh in 2025, about $180 a month (its average across Texas).
Start or move service: united-cs.com · (817) 556-4000
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Mountain WSC
Mountain WSC supplies almost all of South Mountain. It buys treated surface water (EPA lists City of Gatesville as seller) and serves 2,400 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 7,966 systems serving 1,001–3,300 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. TX0500020.
5 home internet providers serve South Mountain
97% of 211 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Brightspeed | DSL | 53% | 80/10 |
| Rise Broadband | Fixed wireless | 91% | 50/10 |
| Nextlink | Fixed wireless | 89% | 500/100 |
| Verizon | Fixed wireless | 82% | 300/20 |
| T-Mobile | Fixed wireless | 77% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have South Mountain’s trash rules yet
Pickup rules, the dump and recycling in South Mountain.
Where your child goes to school
Public school districts and the school path by grade.
South Mountain is in Gatesville 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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
South Mountain is in ZIP code 76528
ZIP codes where South Mountain residents live, with the share of the town in each.
| ZIP | Post office name | Share of South Mountain | ZIP’s residents in South Mountain |
|---|---|---|---|
| 76528 | Gatesville, TX | 100% | 2% |
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 South Mountain
Who supplies South Mountain’s drinking water, and has it had violations?
Mountain WSC (EPA ID TX0500020). It reported no health-based violations to EPA in the five years to October 2026; 78% 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 South Mountain?
United Electric Coop Service (United Electric Coop Service Inc - (TX)), a cooperative utility. Its homes paid about 13.9¢ per kWh in 2025 (EIA).
What internet providers serve South Mountain?
Brightspeed, Rise Broadband, Nextlink, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in South Mountain?
76528. Census 2020 ZIP Code Tabulation Areas.
What school district is South Mountain in?
Gatesville Independent School District.
How do I register to vote in South Mountain?
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 Coryell 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.