Living in Mono Vista, CA: what to set up and who to call
An EPA health-based violation from 2024 is still open for Sonora Meadows Mutual Wtr Co, which supplies Mono Vista. Mono Vista has no town government of its own, so Tuolumne County runs its elections and most services, and its children attend Sonora Union High School District.
I’m new in town
What to set up in Mono Vista, 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 Mono Vista.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Mono Vista. 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 Sonora Meadows Mutual Wtr Co
Sonora Meadows Mutual Wtr Co supplies Mono Vista: about 40% of residents live in its service area. Tud - Upper Basin Water System serves another 9%. Slide Inn Snowbowl Water Co serves another 6%. About 45% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It buys treated surface water (EPA lists Tud - Upper Basin Water System as seller) and serves 1,123 people in all.
1 health-based violation reported to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions), beginning Oct 2024. 78% of the 7,966 systems serving 1,001–3,300 people had none. 1 older violation is still open, since 2024: a lead and copper treatment requirement (Lead and Copper Rule Revisions), per EPA’s records.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, 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. CA5510023.
5 home internet providers serve Mono Vista
100% of 1,499 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 94% | 2,000/250 |
| Cal.net | Fixed wireless | 100% | 100/20 |
| Conifer Communications | Fixed wireless | 77% | 100/10 |
| T-Mobile | Fixed wireless | 72% | 100/20 |
| Verizon | Fixed wireless | 66% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Mono Vista’s trash rules yet
Pickup rules, the dump and recycling in Mono Vista.
Where your child goes to school
Public school districts and the school path by grade.
Mono Vista is in two districts that split the grades: Sonora Union High School District and Soulsbyville Elementary School District.
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
Mono Vista is unincorporated, so Tuolumne County is the local government.
Election office: FVAP local election office directory, updated Jul 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Mono Vista is in ZIP code 95370
ZIP codes where Mono Vista residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mono Vista | ZIP’s residents in Mono Vista |
|---|---|---|---|
| 95370 | Sonora, CA | 100% | 12% |
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 Mono Vista
Who supplies Mono Vista’s drinking water, and has it had violations?
Sonora Meadows Mutual Wtr Co (EPA ID CA5510023). It reported 1 health-based violation to EPA in the five years to October 2026: a lead and copper treatment requirement (Lead and Copper Rule Revisions). 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Mono Vista?
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 Mono Vista?
Xfinity, Cal.net, Conifer Communications, T-Mobile, Verizon (FCC, as of December 2025).
What ZIP codes are in Mono Vista?
95370. Census 2020 ZIP Code Tabulation Areas.
What school district is Mono Vista in?
Sonora Union High School District and Soulsbyville Elementary School District. Parts of the city are in Curtis Creek Elementary School District and Belleview Elementary School District.
How do I register to vote in Mono Vista?
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 Tuolumne County Clerk - Elections. 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.