PORT OF SEATTLE/SEATAC AIRPORT
Washington — Non-Transient Non-Community — PWSID: WA5303182
System Information
| PWSID | WA5303182 |
| System Name | PORT OF SEATTLE/SEATAC AIRPORT |
| System Type | Non-Transient Non-Community |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | May 31, 1994 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Seattle |
| ZIP Code | 98168-0727 |
| Address | PO Box 68727 |
| Organization | PORT OF SEATTLE/SEATAC AIRPORT |
| Phone | — |
Population & Service
| Population Served | 49,483 |
| Service Connections | 146 |
Drinking Water Violations (14)
This water system has 14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2015 | Jun 30, 2015 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2015 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2005 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2005 | — | |
| Jul 1, 1997 | Jun 30, 2002 | MR | No | No | — | TT | — | Resolved | Jun 30, 2002 | — | |
| May 1, 1994 | May 31, 1994 | MCL | Yes | No | — | 5% of samples | — | Archived | May 31, 1994 | — | |
| Mar 1, 1994 | Mar 31, 1994 | MR | No | Yes | — | 5% of samples | — | Archived | Mar 31, 1994 | — |
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.