Photo: Tranistrider1979 · CC BY-SA 3.0Living in Mountain House, CA: what to set up and who to call
Power in Mountain House comes from Modesto Irrigation District, a political subdivision utility rather than a private company. For emergencies, Mountain House is closest to Sutter Tracy Community Hospital, 6.1 miles away.
I’m new in town
What to set up in Mountain House, 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 Mountain House.
Power comes from Modesto Irrigation District
Modesto Irrigation District (Modesto Irrigation District), a political subdivision utility, serves all of Mountain House. Its homes paid an average of 23.0¢ per kWh in 2025, about $173 a month (its average across California).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Mountain House water system
The City of Mountain House water system supplies Mountain House: about 95% of residents live in its service area. About 5% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws surface water and serves 24,948 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–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. CA3910027.
7 home internet providers serve Mountain House
100% of 6,959 addresses can get 100/20 Mbps; 86% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 2,000/250 |
| AT&T | Fiber, DSL, Fixed wireless | 94% | 5,000/5,000 |
| unWired Broadband | Fixed wireless | 100% | 400/50 |
| Cal.net | Fixed wireless | 99% | 100/20 |
| Matrix Broadband | Fixed wireless | 95% | 400/80 |
| Verizon | Fixed wireless | 34% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash and recycling in Mountain House
Pickup days, the drop-off and recycling in Mountain House, from the town’s own site.
We couldn’t find pickup days or drop-off hours. Check mountainhouseca.gov →
From mountainhouseca.gov, the town’s official site, checked Oct 21, 2026; pages dated January 1, 2025. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Mountain House is in Lammersville Joint Unified School District.
ASchool gradeSee 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 Sep 2020; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Mountain House is in ZIP code 95391
ZIP codes where Mountain House residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mountain House | ZIP’s residents in Mountain House |
|---|---|---|---|
| 95391 | Tracy, CA | 100% | 99% |
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 Mountain House
Who supplies Mountain House’s drinking water, and has it had violations?
The City of Mountain House water system (EPA ID CA3910027). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan–Dec 2025), against a 15 ppb action level.
Who provides electricity in Mountain House?
Modesto Irrigation District (Modesto Irrigation District), a political subdivision utility. Its homes paid about 23.0¢ per kWh in 2025 (EIA).
What internet providers serve Mountain House?
Xfinity, AT&T, unWired Broadband, Cal.net, Matrix Broadband, Verizon (FCC, as of December 2025).
What ZIP codes are in Mountain House?
95391. Census 2020 ZIP Code Tabulation Areas.
What school district is Mountain House in?
Lammersville Joint Unified School District.
How do I register to vote in Mountain House?
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 Joaquin Registrar of Voters. 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: Mountain House’s own website (mountainhouseca.gov), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.