castro valley sanitary district Effective Environmental Services Since 1939

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Latest Announcements

July 31, 2020

Financial Assistance for Private Sewer Lateral Replacements  Available for Castro Valley Homeowners

$50,000 in total funding has been allocated to the program.
July 15, 2020

CVSan provides $500,000 of COVID-19 Rates Relief to the Community

In response to the global COVID-19 outbreak, Castro Valley Sanitary District’s (CVSan’s) Board of Directors unanimously voted to pass the COVID-19 Emergency Rates Relief Act (CERRA) at the July 14, 2020 Regular Board Meeting. As adopted via Resolution No. 3473, this action will provide direct financial relief to CVSan customers by waiving the rate increases for the sewer service charge that was to take effect on July 1, 2020.

July 14, 2020

Compost Give-Away Event

In August, Castro Valley Sanitary District (CVSan) hosts a Recycles Day & Compost Give-Away event at Canyon Middle School. The event had been scheduled for Saturday, August 1st, but has unfortunately been cancelled due to statewide shelter-in-place orders and public health directives calling for the cancellation of large public gatherings to slow the spread of COVID-19.

To continue to provide free compost to the community, CVSan is partnering with Pete’s ACE Hardware (Pete’s) for an alternate Compost Give-Away event from August 17th – September 19th! Here is how you can participate:

July 13, 2020

Family of Gleaners Volunteer Work Still Fruitful During Pandemic

Three volunteers from this year's Zero Waste Week gleaning event were inspired to continue gleaning and donating fruit to Castro Valley food pantries.
July 06, 2020

CVSan Recognizes Mario Baker with Custodian 4Rs Educator Award

This year, the Custodian 4Rs Educator Award went to Custodian Mario Baker at Castro Valley Elementary School (CVE).

Compost Give-Away Event


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21040 Marshall Street
Castro Valley, CA 94546

Monday - Friday
7:00 a.m. - 11:00 a.m.
12:00 p.m. - 4:00 p.m.

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Office Hours: (510) 537-0757
After Hours: (510) 506-5821