Living in Greeley Hill, CA: what to set up and who to call
An EPA health-based violation from 2024 is still open for the Yosemite Terrace Estates water system, which supplies Greeley Hill, and its latest lead result (6.6 ppb) was higher than 94% of similar systems’, though under the 15 ppb action level. Greeley Hill has no town government of its own, so Mariposa County runs its elections and most services, and its children attend Mariposa County Unified School District.
I’m new in town
What to set up in Greeley Hill, 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 Greeley Hill.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Greeley Hill. 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 Yosemite Terrace Estates water system
The Yosemite Terrace Estates water system supplies Greeley Hill: about 9% of residents live in its service area. About 91% 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 130 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. 77% of the 15,074 systems serving 101–500 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 2021–Dec 2023, was 6.6 ppb, below the 15 ppb action level that applied. That’s higher than 94% 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. CA2210925.
Which providers serve Greeley Hill
This card will list the home internet providers the FCC’s National Broadband Map shows in Greeley Hill, the share of addresses that can get 100/20 Mbps and the share with fiber, with the map’s “as of” date.
Source to come: FCC Broadband Data Collection.
We don’t have Greeley Hill’s trash rules yet
Pickup rules, the dump and recycling in Greeley Hill.
Where your child goes to school
Public school districts and the school path by grade.
Greeley Hill is in Mariposa County Unified 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
Greeley Hill is unincorporated, so Mariposa County is the local government.
Election office: FVAP local election office directory, updated Jul 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Greeley Hill spans 2 ZIP codes
ZIP codes where Greeley Hill residents live, with the share of the town in each.
| ZIP | Post office name | Share of Greeley Hill | ZIP’s residents in Greeley Hill |
|---|---|---|---|
| 95311 | Coulterville, CA | 96% | 45% |
| 95321 | Groveland, CA | 4% | 1% |
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 Greeley Hill
Who supplies Greeley Hill’s drinking water, and has it had violations?
The Yosemite Terrace Estates water system (EPA ID CA2210925). 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). 77% of systems its size had none. Its latest lead 90th percentile was 6.6 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Greeley Hill?
PG&E (Pacific Gas & Electric Co.), an investor-owned utility. Its homes paid about 37.5¢ per kWh in 2025 (EIA).
What ZIP codes are in Greeley Hill?
95311 (96%), 95321 (4%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Greeley Hill in?
Mariposa County Unified School District.
How do I register to vote in Greeley Hill?
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 Mariposa 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): pending.