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Clean Water Act discharge permit · NPDES WAR044503

SEATTLE CITY, Seattle, WA: NPDES WAR044503 discharge permit, effluent exceedances, inspections, penalties

SEATTLE CITY, held by City of Seattle, holds NPDES permit WAR044503. EPA’s file records it issued July 1, 2019 and expiring July 31, 2024.

SEATTLE CITY, Seattle, Washington: Coverage under a general permit WAR044503, held by City of Seattle; Large municipal storm sewer systems; Administratively continued (past its expiration date and still in force until reissued); issued July 1, 2019, term to July 31, 2024, by State.

  • September 21, 2026: Audit (S).

Washington holds 11 Large municipal storm sewer systems coverages of this permit type in EPA’s file; 0 were issued before WAR044503.

Coverages issued nearest WAR044503

SEATTLE CITY among its neighbors

EPA’s permit file holds 475 discharge permits in the Lake Washington-Sammamish River subwatershed (HUC 171100120400), WAR044503 among them. Its county holds 1,319, 8 of them major permits; WAR044503 is a major permit.

Other permits in the Lake Washington-Sammamish River subwatershed (HUC 171100120400)

Identity

Facility as filedSEATTLE CITY
Permittee as filedCity of Seattle
NPDES IDWAR044503
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
ProgramLarge municipal storm sewer systems
IssuedJuly 1, 2019
Expiration dateJuly 31, 2024
Issuing agencyState
AddressSeattle, WA 98124
Receiving water impaired303(D) Listed
SubwatershedLake Washington-Sammamish River (HUC 171100120400)
Program components on fileStorm Water Medium/Large MS4s, Storm Water Small MS4s
Other EPA IDs (FRS)RCRA handler WAD988503348

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES WAR044503.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES WAR044503.

Inspections

DateWhat EPA recordedAgency
September 21, 2026AuditS

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES WAR044503.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WAR044503.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

The SEATTLE CITY permit, held by City of Seattle, is one of 3 Storm Water Medium/Large MS4s permits on EPA's NPDES register in King County. It also sits among 472 NPDES permits in the Lake Washington-Sammamish River subwatershed, and it records 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.