Photo: David Jordan at English Wikipedia · CC BY-SA 3.0Living in Tres Pinos, CA: what to set up and who to call
Tres Pinos has no town government of its own, so San Benito County runs its elections and most services, and its children attend San Benito High School District. The nearest emergency room is Natividad Medical Center, 18.9 miles away.
I’m new in town
What to set up in Tres Pinos, 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 Tres Pinos.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Tres Pinos. Its homes paid an average of 37.5¢ per kWh in 2025, about $174 a month (its average across California, for customers on its standard service). California lets you buy power from another supplier; 66% of PG&E’s home customers do, and PG&E still delivers it.
Start or move service: pgecorp.com
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Tres Pinos Cwd water system
The Tres Pinos Cwd water system supplies Tres Pinos: about 47% of residents live in its service area. Csa No. 31 Stonegate WS serves another 40%. About 21% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 350 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, 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. CA3500509.
6 home internet providers serve Tres Pinos
96% of 177 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| AT&T | Fixed wireless, DSL | 93% | 100/20 |
| Spectrum | Cable | 88% | 1,000/35 |
| Razzolink | Fixed wireless | 100% | 500/250 |
| Verizon | Fixed wireless | 85% | 300/20 |
| T-Mobile | Fixed wireless | 79% | 100/20 |
| Ridge Wireless | Fixed wireless | 12% | 85/40 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Tres Pinos’ trash rules yet
Pickup rules, the dump and recycling in Tres Pinos.
Where your child goes to school
Public school districts and the school path by grade.
Tres Pinos is in two districts that split the grades: San Benito High School District and Tres Pinos Union Elementary 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
Tres Pinos is unincorporated, so San Benito County is the local government.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Tres Pinos spans 2 ZIP codes
ZIP codes where Tres Pinos residents live, with the share of the town in each.
| ZIP | Post office name | Share of Tres Pinos | ZIP’s residents in Tres Pinos |
|---|---|---|---|
| 95075 | Tres Pinos, CA | 68% | 64% |
| 95023 | Hollister, CA | 32% | 0% |
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 Tres Pinos
Who supplies Tres Pinos’ drinking water, and has it had violations?
The Tres Pinos Cwd water system (EPA ID CA3500509). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Tres Pinos?
PG&E (Pacific Gas & Electric Co.), an investor-owned utility. Its homes paid about 37.5¢ per kWh in 2025 (EIA).
What internet providers serve Tres Pinos?
AT&T, Spectrum, Razzolink, Verizon, T-Mobile, Ridge Wireless (FCC, as of December 2025).
What ZIP codes are in Tres Pinos?
95075 (68%), 95023 (32%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Tres Pinos in?
San Benito High School District and Tres Pinos Union Elementary School District.
How do I register to vote in Tres Pinos?
In California you can register online until 15 days before Election Day, in person up to and including Election Day, or by mail (postmarked 15 days before). Elections here are run by the San Benito County Elections Department. Check your registration at voterstatus.sos.ca.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.