Wastewater Division
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Wastewater Division

In the event of a sewer overflow or backup during working hours (7:30 AM - 4:30 PM M-Th, 7:30 AM - 3:30 PM F), please notify the Wastewater Division IMMEDIATELY by calling (650)286-8140.

After working hours
, please contact Police Dispatch at (650)286-3345. Do not email or report electronically.
The Wastewater Division works to protect the health and safety of Foster City residents and to ensure the protection of the environment by effective treatment and disposal of all wastewater flows from commercial, industrial and residential users. The Wastewater Division works cooperatively with the City of San Mateo which operates, maintains and repairs the Joint Wastewater Treatment facility located within the City of San Mateo. The Public Works Department Wastewater Division operates and maintains more than 43 miles of sanitary sewer lines, more than 8.5 miles of sewer force mains, 49 pumping stations 15 permanent standby generators and four portable generators to ensure that the nearly 3 million gallons of wastewater generated by Foster City each day is transmitted to the joint owned San Mateo Treatment facility.
San Mateo Wastewater Treatment Plant
The City of San Mateo and Foster City/EMID jointly own the San Mateo Wastewater Treatment Plant (WWTP) through a Joint Powers Agreement (JPA) and San Mateo operates the plant as the Lead Agency of the JPA. The facility treats wastewater for the citizens of the City of San Mateo and Foster City/EMID, in addition to surrounding communities. Foster City/EMID owns 25% of the WWTP.
Clean Water Program
The Clean Water Program is a comprehensive plan to upgrade the San Mateo Wastewater Treatment Plant and San Mateo's wastewater collection system with advanced infrastructure that will provide reliable services for years to come. For more information about the Clean Water Program click here.
Will It Flush?

Many thanks to the City of Spokane Wastewater Management Department in partnership with WEF for sharing this educational video.

City Hall - 610 Foster City Blvd.
Foster City, CA 94404
(650) 286-3200