Black Diamond Cemetery · Photo: Joe Mabel · CC BY-SA 3.0Living in Black Diamond, WA: what to set up and who to call
Every home in Black Diamond is in ZIP code 98010. Most of Black Diamond has one wired internet choice: Xfinity.
I’m new in town
What to set up in Black Diamond, 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 Black Diamond.
Power comes from Puget Sound Energy
Puget Sound Energy (Puget Sound Energy Inc), an investor-owned utility, serves all of Black Diamond. 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 Black Diamond Water Dept
Black Diamond Water Dept supplies Black Diamond: about 64% of residents live in its service area. Covington Water District serves another 35%. It draws ground water (EPA lists City of Tacoma Water Division as seller) and serves 6,407 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 1.5 ppb, below the 15 ppb action level that applied. The highest in five years was 2.0 ppb. That’s higher than 59% 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. WA5307220.
8 home internet providers serve Black Diamond
100% of 2,814 addresses can get 100/20 Mbps; 9% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 2,000/250 |
| Astound Broadband | Fiber | 37% | 2,000/2,000 |
| CenturyLink | DSL, Fiber | 13% | 140/20 |
| Quantum Fiber | Fiber | 9% | 2,000/1,000 |
| Skynet Broadband | Fixed wireless | 84% | 100/100 |
| Verizon | Fixed wireless | 75% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Black Diamond’s trash rules yet
Pickup rules, the dump and recycling in Black Diamond.
Where your child goes to school
Public school districts and the school path by grade.
Most of Black Diamond (86%) is in Enumclaw School District; parts are in Kent School District (7%) and Tahoma School District (7%).
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 2021; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Black Diamond is in ZIP code 98010
ZIP codes where Black Diamond residents live, with the share of the town in each.
| ZIP | Post office name | Share of Black Diamond | ZIP’s residents in Black Diamond |
|---|---|---|---|
| 98010 | Black Diamond, WA | 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 Black Diamond
Who supplies Black Diamond’s drinking water, and has it had violations?
Black Diamond Water Dept (EPA ID WA5307220). 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 1.5 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Black Diamond?
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 Black Diamond?
Xfinity, Astound Broadband, CenturyLink, Quantum Fiber, Skynet Broadband, Verizon (FCC, as of December 2025).
What ZIP codes are in Black Diamond?
98010. Census 2020 ZIP Code Tabulation Areas.
What school district is Black Diamond in?
Enumclaw School District. Parts of the city are in Kent School District and Tahoma School District.
How do I register to vote in Black Diamond?
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 King County Elections. 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.