Photo: Steve Morgan · CC BY-SA 3.0Living in Cedar Mill, OR: what to set up and who to call
Cedar Mill has no town government of its own, so Multnomah County runs its elections and most services, and its children attend Beaverton School District 48J. Tualatin Valley Water District has a clean five-year EPA record, but its latest lead result, 5.3 ppb, was higher than 92% of similar systems’ (the action level is 15).
I’m new in town
What to set up in Cedar Mill, 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 Cedar Mill.
Power comes from Portland General Electric
Portland General Electric (Portland General Electric Co), an investor-owned utility, serves all of Cedar Mill. Its homes paid an average of 18.8¢ per kWh in 2025, about $142 a month (its average across Oregon).
Start or move service: portlandgeneral.com · (503) 464-8000
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Tualatin Valley Water District
Tualatin Valley Water District supplies Cedar Mill: about 97% of residents live in its service area. About 3% 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 Joint Water Commission and Portland Water Bureau as sellers) and serves 224,600 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan–Dec 2026, was 5.3 ppb, below the 15 ppb action level that applied. The highest in five years was 15.0 ppb. That’s higher than 92% 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. OR4100665.
8 home internet providers serve Cedar Mill
100% of 5,116 addresses can get 100/20 Mbps; 81% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| Ziply Fiber | Fiber, DSL | 84% | 6,000/6,000 |
| CenturyLink | DSL, Fiber | 4% | 100/10 |
| Quantum Fiber | Fiber | 3% | 2,000/1,000 |
| Verizon | Fixed wireless | 55% | 300/20 |
| AT&T | Fixed wireless | 36% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Cedar Mill’s trash rules yet
Pickup rules, the dump and recycling in Cedar Mill.
Where your child goes to school
Public school districts and the school path by grade.
Most of Cedar Mill (99%) is in Beaverton School District 48J.
ASchool 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
Cedar Mill is unincorporated, so Multnomah County is the local government.
Election office: FVAP local election office directory, updated Jun 2023; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Oct 2, 2026.
Cedar Mill is in ZIP code 97229
ZIP codes where Cedar Mill residents live, with the share of the town in each.
| ZIP | Post office name | Share of Cedar Mill | ZIP’s residents in Cedar Mill |
|---|---|---|---|
| 97229 | Portland, OR | 100% | 23% |
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 Cedar Mill
Who supplies Cedar Mill’s drinking water, and has it had violations?
Tualatin Valley Water District (EPA ID OR4100665). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 5.3 ppb (Jan–Dec 2026), against a 15 ppb action level.
Who provides electricity in Cedar Mill?
Portland General Electric (Portland General Electric Co), an investor-owned utility. Its homes paid about 18.8¢ per kWh in 2025 (EIA).
What internet providers serve Cedar Mill?
Xfinity, Ziply Fiber, CenturyLink, Quantum Fiber, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in Cedar Mill?
97229. Census 2020 ZIP Code Tabulation Areas.
What school district is Cedar Mill in?
Beaverton School District 48J.
How do I register to vote in Cedar Mill?
In Oregon you can register online until 21 days before Election Day, in person until 21 days before Election Day, or by mail (postmarked 21 days before). Elections here are run by the Washington County Clerk, Elections Office. Check your registration at sos.oregon.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 Oct 2, 2026 (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.