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Click to Meet the Board

Richard K. Tanaka,
District Manager-Engineer

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Benjamin Porter,
Deputy District Manager

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Office Hours:
M-F, 8am-5pm

Permits Counter:
M-F, 8am-4:30pm

Closed for Lunch:

After Hours & Weekends
Emergency Response Call:

(408) 299-2507

Cupertino Sanitary District
Cupertino Sanitary District

Cupertino Sanitary District provides sewer service to over 23,000 customers within the communities of Cupertino, portions of Saratoga, Sunnyvale, Los Altos and unincorporated areas within Santa Clara County.

Our Mission

To protect the public health and environment. To provide for safe and cost-efficient collection of sewage waste within Cupertino Sanitary District. To provide for effective conveyance to the Treatment Plant.


Cupertino Sanitary District has retained V&A Consultants to perform smoke testing of our sewer lines in a section of the District. Areas include neighborhoods on/around Mt. Eden Road, Pierce Road, Sarahills Drive, and Quarry Road. Testing will begin in October. Notices have been mailed out to property owners who's homes are located within the neighborhoods to be tested. Approximately 2 days before actual smoke testing commences, we will send out a District inspector to notify residents in person and/or leave a door hanger notice. The purpose of this test is to locate any cracks where rainwater might enter the sewer collection system and affect the flow rate. Residents may see smoke coming from roof vents, building foundations, catch-basins, sewer cleanouts, and manhole covers. The smoke used is non-toxic and will not harm humans or pets. Please read the informational flyer for a map of the testing area and more details. If you have any questions please call our office at (408) 253-7071.

Sewer backing up? CALL US FIRST . . .  

(408) 253 7071 M-F, 8am-5pm

or (408) 299-2507, After Hours

We will respond to sewer backup calls 24/7.
Do NOT send an email for sewer backups.

Click here for more on sewer backups.

NOTICE OF PUBLIC HEARING - On December 5, 2018, the District will hold a public hearing on Proposed Fees and Charges Increase. The hearing will take place at 7pm at the regular meeting place of the Board, Stevens Creek Office Center, 20863 Stevens Creek Boulevard, Suite 100, Cupertino, California. The District is proposing an increase of fees and charges for the connection and capacity/treatment fees for new and redevelopment of properties in the Cupertino Sanitary District service area. To see the report, click here.

Before You Dig...
Before You Dig...

Go online or call
two working days before you dig.


or Dial 811 or 1-800-227-2600


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    Contact us

    20863 Stevens Creek Boulevard, Suite 100
    Cupertino, CA 95014
    Phone: (408) 253-7071
    Fax: (408) 253-5173

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