Stormwater Code and Manual Update – Notice of Rulemaking and Public Comment
The City of Seattle is in the process of updating Seattle’s Stormwater Code and Stormwater Manual as required by the Washington State Department of Ecology. The joint SDCI/SPU Draft Directors’ Rule (the Stormwater Manual) will be released for final public comment the week of March 16, 2026, and will be… [ Keep reading ]


