Drainage & Sewer Plans

Drainage and wastewater systems shape Seattle in essential, invisible ways. Everyone in Seattle relies on a vast drainage and wastewater system. Seattle Public Utilities (SPU) builds and manages the drainage and wastewater systems that affect how water flows in, out, and around our city. Learn more about the sewer and drainage systems at work in your neighborhood in our interactive StoryMap, the Power of Water.

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.

Public Utilities

Andrew Lee, General Manager and CEO
Address: 700 5th Avenue, Suite 4900, Seattle, WA, 98104
Mailing Address: PO Box 34018, Seattle, WA, 98124-5177
Phone: (206) 684-3000

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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility.