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Blending Event Notifications
The link below will take you to the Blending Notifications folder in the Document Center.

Blending Notifications will be posted to the folder when an event is occurring and again when the event has ended. The folder will be blank if there is not a blending event occurring. 

PLEASE NOTE: The Blending Event Notifications will only be posted when a blending event is occurring.

What is a Blending Event?
Blended wastewater is biologically treated wastewater (secondary effluent) blended with wastewater diverted around biological or advanced treatment units (primary effluent).  The San Mateo WWTP disinfects and dechlorinates all effluent, including blended effluent, before discharging to the Bay.

San Mateo City Hall – 330 West 20th Avenue, San Mateo, CA 94403

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