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County Sanitation District No. 2-3 of Santa Clara County

CSD2-3 provides sewer services to the unincorporated Santa Clara County area of Alum Rock and the County Fairgrounds in San Jose.



Please remember to only flush toilet paper! You may be experiencing a shortage of toilet paper, but anything else (e.g. sanitary wipes, paper towels, etc.) does not break down as well in the sewer system and can cause sewer system blockages and pump station failure. Please dispose of any other products properly in the trash.


Please see the attached link for more information:


Thank you!

In response to the rapidly evolving COVID-19 situation and under guidance from local, state and federal authorities, we will be closing our physical office, beginning Tues, March 17th while continuing to provide limited service to our customers.

We will continue to provide 24/7 service for sewer backups and other sewer related emergencies. If you have a backup or slow drainage, please call County Communications at (408) 299-2507 and an inspector will respond within 2 hours.

Our office staff will continue to work from home as much as possible and provide service to our customers via phone and email. Please visit our Contact page to reach us via email or phone.

Over-the-counter permits and all construction related inspections are on hold until further notice.

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

News & Announcements

SSMP (Sewer System Management Plan)

The District has updated the SSMP and the certification is scheduled at the Board of Supervisors meeting on March 12, 2019.  Click here for the SSMP.

District Capital Improvement Projects

The District Capital Improvement Fiscal Year 2016-2017 has been completed and included:

  • Abandonment of a pump station and replaced with a gravity main on Valley Avenue.
  • 103 spot repairs of sewer mains along Jerilyn drive between White Road and Meadow Lane and surrounding streets.

The project will enhance the neighborhood’s sanitary sewer system and avoid potential sewer overflows into North Babb Creek and adjacent properties.


 Click here for pdf of plans.



Contractor Registration

For a current list of registered contractors, click here.

For instructions and application to be added to our list of registered contractors, click here.


(408) 477-7312
or after hours:
(408) 299-2507


The Santa Clara County Board of Supervisors sits as Directors of Sanitation 2-3.

Click here for Board Meeting Dates.

Two working days before you dig, go online:

Contact us
email us
20863 Stevens Creek Blvd.
Suite 100
Cupertino, CA 95014

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