Castro Valley Sanitary District

06/19/2026

CVSan’s Recycles Day event is on Saturday 7/25 at Canyon Middle School! Alameda County residents are invited to drop off Household Hazardous Waste (paint, chemicals, pharmaceuticals, e-waste). CVSan customers can also pick up 3 bags of compost, drop off textiles, and exchange single use 1 lb. propane cylinders for a refillable one! Appointments are required and are limited. Registration opens 6/22 at 3 p.m. to 7/20 at cvsan.org/RecyclesDay.

Early registrations will not be accepted.

Recycles Day is held each spring and summer.

06/19/2026

Hey Castro Valley! Check out this take-out tip from Bay Area Recycling Outreach Coalition (BayROC).

06/17/2026

CVSan's Wastewater 100

#93 CVSan uses specialized closed-circuit television (CCTV) equipment to inspect wastewater sewer mains.

Learn more about the high performance - low-cost wastewater services we provide at cvsan.org/Wastewater

CVSan provides reliable, cost-effective wastewater services in Castro Valley. Learn how wastewater is collected, maintained, and conveyed to the treatment plant to protect public health and the environment.

06/16/2026

The May numbers are in!

We are happy to report that the Maintenance Team performed service and maintenance on 52,374 feet of pipeline. You can help maintain the sewer system by only flushing the 3 P’s P*e, P**p, and Toilet Paper!

Protect your home and the sewer system—learn CVSan’s tips for preventing backups and blockages. Simple steps can reduce costs and safeguard the environment.

06/15/2026

Missed our Open House? Watch our quick tour video for a look at our building's new features.

06/12/2026

Residents: Don’t dump your single-use 1 lb. propane cylinders! Make sure you dispose of them properly at your local household hazardous waste facility & switch to refillable cylinders. Check out RefuelYourFun.org for more info.

06/12/2026

If you see a sewer overflow, Call Us First! 510-506-5821!!! CVSan’s skilled team provides prompt, 24-hour service to help protect public health and the environment! To learn more about the high-performance low-cost wastewater services we provide, visit cvsan.org/Wastewater

06/11/2026

We had a blast with you at our open house! We love being a part of the Castro Valley Community. Stay up to date on CVSan services, programs, and events by signing up for our e-newsletter at cvsan.org/EmailUpdates.

06/10/2026

Hey Castro Valley! Check out these take-out tips from Bay Area Recycling Outreach Coalition (BayROC).