Hallett House · Photo: Jon Roanhaus · CC BY-SA 4.0Living in Medical Lake, WA: what to set up and who to call
Every home in Medical Lake is in ZIP code 99022. For home internet, most of Medical Lake can choose between Xfinity and DCI.
I’m new in town
What to set up in Medical Lake, 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 Medical Lake.
Power comes from Avista
Avista (Avista Corp.), an investor-owned utility, serves all of Medical Lake. Its homes paid an average of 14.2¢ per kWh in 2025, about $130 a month (its average across Washington).
Start or move service: avistacorp.com · (509) 489-0500
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Medical Lake water system
The City of Medical Lake water system supplies Medical Lake: about 93% of residents live in its service area. Consolidated Support Services serves another 7%. It draws ground water (EPA lists Consolidated Support Services and Four Lakes Water District 10 and City of Spokane as sellers) and serves 4,982 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 2023–Dec 2025, was 1.1 ppb, below the 15 ppb action level that applied. The highest in five years was 1.3 ppb. That’s higher than 52% 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. WA5353400.
7 home internet providers serve Medical Lake
89% of 1,584 addresses can get 100/20 Mbps; 84% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Fiber, Cable | 91% | 2,000/2,000 |
| DCI | Cable | 86% | 1,000/100 |
| CenturyLink | DSL, Fiber | 65% | 40/3 |
| Wind Wireless | Fixed wireless | 100% | 100/20 |
| Ziply Fiber | Fixed wireless | 99% | 50/10 |
| T-Mobile | Fixed wireless | 58% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Medical Lake’s trash rules yet
Pickup rules, the dump and recycling in Medical Lake.
Where your child goes to school
Public school districts and the school path by grade.
Medical Lake is in Medical Lake 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 Aug 2026; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Medical Lake is in ZIP code 99022
ZIP codes where Medical Lake residents live, with the share of the town in each.
| ZIP | Post office name | Share of Medical Lake | ZIP’s residents in Medical Lake |
|---|---|---|---|
| 99022 | Medical Lake, WA | 100% | 55% |
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 Medical Lake
Who supplies Medical Lake’s drinking water, and has it had violations?
The City of Medical Lake water system (EPA ID WA5353400). 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 1.1 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Medical Lake?
Avista (Avista Corp.), an investor-owned utility. Its homes paid about 14.2¢ per kWh in 2025 (EIA).
What internet providers serve Medical Lake?
Xfinity, DCI, CenturyLink, Wind Wireless, Ziply Fiber, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Medical Lake?
99022. Census 2020 ZIP Code Tabulation Areas.
What school district is Medical Lake in?
Medical Lake School District.
How do I register to vote in Medical Lake?
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 Spokane 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.