Preventing Sewer Overflows and Problems

No one wants their sewage back! SPU works to maintain, build and manage Seattle's sewer system to protect our city and the environment from overflows and backups.

To do this, SPU:

About Combined Sewer Overflows (CSOs)

CSOs are one type of sewer overflow. Use our map to find current or recent overflows.

Since 2008, we have invested almost $1 billion to reduce CSOs. We are reducing pollution in our waters. Learn more about our commitment to CSO reduction:

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.