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Seattle CB 121190 (2026): votes and status — Project Euthyna

Seattle · 2026

An ordinance relating to the 2026 Stormwater Code Update

An ordinance relating to the 2026 Stormwater Code Update; updating stormwater control requirements for development, roadways, utilities, and maintenance activities; strengthening stormwater treatment and infiltration standards; clarifying vesting and review thresholds; ensuring the City’s compliance with requirements of the City’s 2024-2029 Phase 1 Municipal Stormwater Permit issued by the State Department of Ecology; and amending Chapters 22.800, 22.801, 22.802, 22.803, 22.805, and 22.807 of the Seattle Municipal Code.

CB 121190·Council·Bill

Joy HollingsworthCity Council · D-3

Primary sponsor

Joy HollingsworthCity Council · D-3

Floor votes

Governance and Utilities Committee · Pass as amended · Version 1May 14, 20264–0

Council · Passed as amended · Version 2Jun 2, 20269–0

Legislative history

Mar 18, 2026

Mayor: Mayor's leg transmitted to Council

Mar 18, 2026

City Clerk: sent for review

Mar 20, 2026

Council President's Office: sent for review

Mar 31, 2026

City Council: referred

Apr 9, 2026

Governance and Utilities Committee: discussed

May 14, 2026

Governance and Utilities Committee: pass as amended

Jun 2, 2026

City Council: passed as amended

Jun 4, 2026

City Clerk: submitted for Mayor's signature

Jun 4, 2026

Mayor: Signed

Jun 4, 2026

Mayor: returned

Jun 4, 2026

City Clerk: attested by City Clerk

Legislation text

CB 121190 — Version 1 CB 121190 — Version 2 CB 121190 — Version 3

Attachments

Summary and Fiscal Note v2 Summary and Fiscal Note v1 Summary Ex A - Legislative Summary Summary Ex B - Ecology Conditional Approval Letter Summary Ex C - Environmentally Critical Areas Central Staff Memo Presentation Presentation (5/14/26)Amendment 1 Amendment 2 May 14 Amendment Vote Tally Amendment A Signed Ordinance 127444 Affidavit of Publication

Where it stands

In committee

Before the Full Council

With the Mayor

Became an ordinanceOrd 127444

Path for a council bill