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About SPU
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Water Quality & Treatment
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Tolt Treatment Facility
Tolt Treatment Facility
Seattle Public Utilities' Tolt Treatment Facility began operation at the end of 2000. The facility provides 120 million gallons of water a day to customers in Seattle and suburban cities. It is the City's first filtration and ozonation facility.
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The plant was created in a private-public partnership with Azurix CDM, who has a 25-year design-build-operate contract with the City of Seattle. This partnership resulted in a $70 million cost savings for ratepayers.
Project Information
For information on this project, please contact SPU’s Project Manager:
Alex Chen
Senior Water Quality Engineer / DBO Contract Manager
Seattle Public Utilities
700 5th Avenue, Suite 4900
PO Box 34018
Seattle, WA 98124-4018
(206) 233-1522
alex.chen@seattle.gov
Related links
Tolt River Watershed
Cedar Treatment Facility
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