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Click to Meet the Board

District Manager-Engineer,
Benjamin T. Porter, P.E. 
Click here to contact

Office Phone:
(408) 253-7071

Business Hours:
Monday - Friday,

In-Person Counter Service:
Monday - Friday,
10am-3pm, or by appointment

After Hours & Weekends
Emergency Response Call:

(408) 299-2507


Our office is now open to the public. 

In-person permit counter service hours are M-F, 10am-3pm. 

For in-person service outside of the daily hours, an appointment is required. 

To get in touch with us please call (408) 253-7071 or send an email to:

The safety of our customers, employees, and families remains our number one priority and we continue to follow CDC guidelines. We thank you for your patience and cooperation during this uneasy time.

Notice of New Sewer Service Rates:

At a public hearing held on June 15, 2022, the Cupertino Sanitary District Board approved Ordinance No. 129, An Ordinance of the Cupertino Sanitary District Amending Sections 7301, 7302 and 7303 of Chapter VII of the Cupertino Sanitary District Operations Code Relating to Sewer Service Charges. These charges are paid by residential, commercial, institutional, and industrial users of the sanitary sewer system.  At the hearing, staff proposed a residential rate increase not to exceed 5% for FY 2022-2023.  Non-residential customer rates will increase proportionately.

The new rates take effect on July 1, 2022.   

Links: Ordinance No. 129 / List of Adjusted Rates

We know you’re working hard to keep yourselves healthy during COVID19 Shelter-in-Place. Help us keep our sewers healthy as well. Remember to never flush wipes, paper towels, or tissues because they clog our pump stations and the pipes! The District has 17 pump stations and it has become a major maintenance issue, resulting in significant cost increases (see photo to the right).

With the shortage of toilet paper, wipes are being used. Just remember:  Save your pipes!  No matter what the label says, don’t flush them – instead trash them.

Below are links to recent CA media coverage related to COVID-19 and impacts on the wastewater system:

If you have any questions, please contact us 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.

Inflow Reduction Program - Click here to view the full flyer

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

Go online or call
two working days before you dig.


or Dial 811 or 1-800-227-2600


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.

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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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