Colusa High School and Grounds · Photo: Ammodramus · CC0Living in Colusa, CA: what to set up and who to call
The City of Colusa water system has a clean five-year EPA record, but its latest lead result, 6.8 ppb, was higher than 95% of similar systems’ (the action level is 15). Colusa has its own library, Colusa County Free Library, at 738 Market St.
I’m new in town
What to set up in Colusa, 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 Colusa.
Power comes from PG&E
PG&E (Pacific Gas & Electric Co.), an investor-owned utility, serves all of Colusa. 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 City of Colusa water system
The City of Colusa water system supplies Colusa: about 93% of residents live in its service area. About 7% 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 6,447 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 6.8 ppb, below the 15 ppb action level that applied. That’s higher than 95% 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. CA0610002.
8 home internet providers serve Colusa
100% of 2,070 addresses can get 100/20 Mbps; 78% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 2,000/250 |
| Race Communications | Fiber | 67% | 10,000/10,000 |
| Frontier | Fiber, DSL | 43% | 7,000/7,000 |
| T-Mobile | Fixed wireless | 87% | 100/20 |
| unWired Broadband | Fixed wireless | 66% | 400/50 |
| DigitalPath | Fixed wireless | 55% | 200/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Recology Butte Colusa Counties picks up trash in Colusa
Pickup days, the drop-off and recycling in Colusa, from the town’s own site.
Maxwell Transfer Station
3852 Co Road 99W, Maxwell, CA 95955
We couldn’t find its opening hours.
From cityofcolusa.com, the town’s official site, checked Oct 21, 2026; pages dated Copyright © 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.
Colusa is in Colusa Unified 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.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jul 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Colusa is in ZIP code 95932
ZIP codes where Colusa residents live, with the share of the town in each.
| ZIP | Post office name | Share of Colusa | ZIP’s residents in Colusa |
|---|---|---|---|
| 95932 | Colusa, CA | 100% | 82% |
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 Colusa
Who supplies Colusa’s drinking water, and has it had violations?
The City of Colusa water system (EPA ID CA0610002). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 6.8 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Colusa?
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 Colusa?
Xfinity, Race Communications, Frontier, T-Mobile, unWired Broadband, DigitalPath (FCC, as of December 2025).
What ZIP codes are in Colusa?
95932. Census 2020 ZIP Code Tabulation Areas.
What school district is Colusa in?
Colusa Unified School District.
How do I register to vote in Colusa?
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 Colusa County Clerk-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: Colusa’s own website (cityofcolusa.com), 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.