Stormwater Code and Manual Update 2026 - Get Involved

salmon

Get Involved

We'd like to invite you to participate in the 2026 Stormwater Code and Manual update by attending the public meetings and providing comments. See below for more information.

Upcoming Opportunities to Comment

There will be a public notice and review period for the Draft Directors’ Rule (Stormwater Manual) and City Council Stormwater Code legislation meetings where public comment will be accepted in spring 2026.

Draft Directors’ Rule (Stormwater Manual) Public Review:

March 16, 2026 - April 1, 2026

Stormwater Code City Council Public Meetings (dates to be determined):

Governance and Utilities Committee – April 2026
Governance and Utilities Committee- May 2026
Full Council Adoption – May 2026

We'll send announcements to the SDCI Stormwater Code email list. If you haven’t already, please subscribe now to receive announcements.

How to Comment

You can submit comments on the Draft Directors’ Rule (Stormwater Manual) in March by:

Downloading a Stormwater Draft Comment Log spreadsheet
Adding your comments
Sending the file to SPUStormwaterCodeRev@seattle.gov

Email correspondence is preferred, but paper comments may also be mailed to:

Sherell Ehlers
Seattle Public Utilities
700 Fifth Ave, Suite 4400
PO Box 34018
Seattle, WA 98124-4018

When commenting on the Stormwater Code or Manual, please include as much of the following information as you can:

Number and title of the code or manual section (for example: 22.805.070.D.a or Volume 1, Section 3.2)
Specific code language you’re suggesting
Explanation of why the code should be changed

We may not be able to respond to individual comments, but we will take all comments into consideration.

Past Public Meetings and Draft Stormwater Code and Manual

We began our public engagement for the 2026 Stormwater Code and Manual Update in the fall of 2024. We released the first public review drafts on July 8, 2025, and a public meeting was held on July 15, 2025. Many public comments were received during the comment period. We held a fall Listening Session on September 25, 2025.

January 14, 2026 Virtual Public Meeting. We held the second public meeting to share the changes in the second draft of the Seattle Stormwater Code and Manual on January 14, 2026. You can view the meeting at the link below:

July 15, 2025 Virtual Public Meeting. We held a public meeting on July 15, 2025 to describe the proposed changes in the 1st first draft of the 2026 Stormwater Code and Manual.

July/August 2025 Public Comment Period for First Draft. The first public review draft comment period was July 8 - August 15, 2025. We've posted the draft documents on the Project Documents page.

September 25, 2025 Fall Listening Session. The fall listening session clarified the rationale for some of the changes, confirmed we understood the comments we received during the first public review, and provided for an open discussion for questions and feedback.

A summary of our initial responses to the public comments can be found in the Summary of Changes to Stormwater Code & Manual.

Stay Connected

Sign up for the SDCI Stormwater Code Updates Listserv if you want to get email updates on project milestones, available documents, and upcoming public meetings, or email us at SPUStormwaterCodeRev@seattle.gov.