Drainage & Sewer Plans

Drainage and wastewater systems shape Seattle in essential, invisible ways. Seattle Public Utilities (SPU) develops drainage and wastewater plans about current and future management and operations, to meet regulation, and to prepare our drainage and wastewater systems for future challenges like growth and climate change.

• Shape Our Water, a community-centered project about the next 50 years of resilient drainage and wastewater systems
• Seattle Overflow Action Plan, Seattle’s path to reducing combined sewer overflows in waterways during heavy storms.
• Stormwater Management Plan, highlighting our work to protect stormwater quality