Living in Santa Rita Ranch, TX: what to set up and who to call
Santa Rita Ranch has no town government of its own, so Williamson County runs its elections and most services, and its children attend Liberty Hill Independent School District. The City of Georgetown water system reported one health-based violation to EPA in the last five years: disinfection byproducts (TTHM), beginning Apr 2026.
I’m new in town
What to set up in Santa Rita Ranch, 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 Santa Rita Ranch.
Power comes from Oncor
Oncor (Oncor Electric Delivery Co.), an investor-owned utility, serves all of Santa Rita Ranch.
Start or move service: oncor.com · (888) 875-6279
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Georgetown water system
The City of Georgetown water system supplies almost all of Santa Rita Ranch. It draws surface water (EPA lists City of Round Rock and City of Florence and City of Leander as sellers) and serves 191,639 people in all.
1 health-based violation reported to EPA in the five years to October 2026: disinfection byproducts (TTHM), beginning Apr 2026. 86% of the 332 systems serving 100,001–250,000 people had none.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, was 4.8 ppb, below the 15 ppb action level that applied. That’s higher than 90% 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. TX2460001.
9 home internet providers serve Santa Rita Ranch
100% of 2,874 addresses can get 100/20 Mbps; 100% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| FiberFirst | Fiber | 100% | 5,000/5,000 |
| Optimum | Cable, Fiber | 99% | 940/940 |
| Spectrum | Cable, Fiber | 3% | 1,000/1,000 |
| AT&T | Fixed wireless, Fiber | 2% | 5,000/5,000 |
| Verizon | Fixed wireless | 99% | 300/20 |
| Western Broadband | Fixed wireless | 98% | 200/40 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Santa Rita Ranch’s trash rules yet
Pickup rules, the dump and recycling in Santa Rita Ranch.
Where your child goes to school
Public school districts and the school path by grade.
Most of Santa Rita Ranch (66%) is in Liberty Hill Independent School District; parts are in Georgetown Independent School District (34%).
B−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
Santa Rita Ranch is unincorporated, so Williamson County is the local government.
Election office: FVAP local election office directory, updated Nov 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Santa Rita Ranch is in ZIP code 78642
ZIP codes where Santa Rita Ranch residents live, with the share of the town in each.
| ZIP | Post office name | Share of Santa Rita Ranch | ZIP’s residents in Santa Rita Ranch |
|---|---|---|---|
| 78642 | Liberty Hill, TX | 100% | 15% |
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 Santa Rita Ranch
Who supplies Santa Rita Ranch’s drinking water, and has it had violations?
The City of Georgetown water system (EPA ID TX2460001). It reported 1 health-based violation to EPA in the five years to October 2026: disinfection byproducts (TTHM). 86% of systems its size had none. Its latest lead 90th percentile was 4.8 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Santa Rita Ranch?
Oncor (Oncor Electric Delivery Co.), an investor-owned utility.
What internet providers serve Santa Rita Ranch?
FiberFirst, Optimum, Spectrum, AT&T, Verizon, Western Broadband (FCC, as of December 2025).
What ZIP codes are in Santa Rita Ranch?
78642. Census 2020 ZIP Code Tabulation Areas.
What school district is Santa Rita Ranch in?
Liberty Hill Independent School District. Parts of the city are in Georgetown Independent School District.
How do I register to vote in Santa Rita Ranch?
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 Williamson 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.