Photo: ECTran71 · Public domainLiving in Mountlake Terrace, WA: what to set up and who to call
Mountlake Terrace has its own drop-off, Southwest Transfer Station, on 21311 61st Place West. For emergencies, Mountlake Terrace is closest to Swedish Edmonds Hospital, 1.7 miles away.
I’m new in town
What to set up in Mountlake Terrace, 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 Mountlake Terrace.
Power comes from Puget Sound Energy
Puget Sound Energy (Puget Sound Energy Inc), an investor-owned utility, serves all of Mountlake Terrace. Its homes paid an average of 17.0¢ per kWh in 2025, about $147 a month (its average across Washington).
Start or move service: pse.com · (888) 225-5773
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Mountlake Terrace water system
The City of Mountlake Terrace water system supplies almost all of Mountlake Terrace. It buys treated surface water (EPA lists Alderwood Water District as seller) and serves 26,402 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 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. WA5357250.
5 home internet providers serve Mountlake Terrace
100% of 6,184 addresses can get 100/20 Mbps; 81% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable, Fiber | 100% | 2,000/250 |
| Ziply Fiber | Fiber, DSL | 89% | 6,000/6,000 |
| T-Mobile | Fixed wireless | 67% | 100/20 |
| AT&T | Fixed wireless | 54% | 100/20 |
| Verizon | Fixed wireless | 47% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Mountlake Terrace has its own drop-off: Southwest Transfer Station
Where to take trash and recycling in Mountlake Terrace, and where the rules are.
Southwest Transfer Station
21311 61st Place West, Mountlake Terrace, WA
Before you go, check the rules on cityofmlt.com.
OpenStreetMap, as of Oct 9, 2026 (last edited Jun 2024). © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Mountlake Terrace is in Edmonds 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 Sep 2022; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Mountlake Terrace is in ZIP code 98043
ZIP codes where Mountlake Terrace residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mountlake Terrace | ZIP’s residents in Mountlake Terrace |
|---|---|---|---|
| 98043 | Mountlake Terrace, WA | 100% | 100% |
A few homes fall in 98036.
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 Mountlake Terrace
Who supplies Mountlake Terrace’s drinking water, and has it had violations?
The City of Mountlake Terrace water system (EPA ID WA5357250). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none.
Who provides electricity in Mountlake Terrace?
Puget Sound Energy (Puget Sound Energy Inc), an investor-owned utility. Its homes paid about 17.0¢ per kWh in 2025 (EIA).
What internet providers serve Mountlake Terrace?
Xfinity, Ziply Fiber, T-Mobile, AT&T, Verizon (FCC, as of December 2025).
What ZIP codes are in Mountlake Terrace?
98043. Census 2020 ZIP Code Tabulation Areas.
What school district is Mountlake Terrace in?
Edmonds School District.
How do I register to vote in Mountlake Terrace?
In Washington you can register online until 8 days before Election Day, in person up to and including Election Day, or by mail (received 8 days before). Elections here are run by the Snohomish County Auditor. Check your registration at voter.votewa.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 Sep 30, 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.