KING COUNTY WATER DISTRICT #20
Washington — Community Water System — PWSID: WA5338950
System Information
| PWSID | WA5338950 |
| System Name | KING COUNTY WATER DISTRICT #20 |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Seattle |
| ZIP Code | 98168 |
| Address | 12606 1st Ave S |
| Organization | KING COUNTY WATER DISTRICT #20 |
| Phone | — |
Population & Service
| Population Served | 38,974 |
| Service Connections | 14,695 |
Drinking Water Violations (3)
This water system has 3 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2003 | Jul 31, 2003 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 2003 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.