Seattle Public Utilities

Contact Us

We welcome your questions and comments.


For questions about Combined Sewer Overflows, please contact Alexander Mockos, CSO Program Manager, at
For questions about the Street Sweeping Program, please contact Rex Davis, at


Mailing Address:

Seattle Public Utilities
C/O CSO Program
700 5th Ave. Suite 4900
PO Box 34018
Seattle, WA 98124-4018