The Castro Valley Sanitary District (CVSan) is a small public agency organized under the Health and Safety Code of the State of California. As a California Special District, CVSan has responsibility for the operation and maintenance of the sanitary sewer collection system within the unincorporated community of Castro Valley. The District also is in charge of the administration of a refuse collection franchise, the District's 25% interest in a wastewater treatment facility, implementation and administration of State and local mandated recycling programs, as well as District participation in sub-regional wastewater discharge and solid/hazardous waste management agencies.

Wastewater Services

The purpose of the wastewater program is to collect and convey all wastewater produced within the District to the Oro Loma/Castro Valley Wastewater Treatment Plant in San Lorenzo. This is accomplished through establishing specifications for the construction of sewer lines, inspecting for compliance with those specifications, conducting preventive maintenance of the system, repairing and replacing defective elements of the system, managing flow rates to stay within the capacity of the collection and treatment systems. The collection system maintains approximately 160 miles of wastewater sewer mains and nine (9) wastewater pump stations.

Zero Waste Services

The Zero Waste Department, ensures that residential and commercial customers receive quality organics, recycling, and garbage services at reasonable rates from the District’s contractor. The Department ensures compliance with Federal, State and local regulations including a mandate to reduce materials sent to landfills, along with a requirement to appropriately discard hazardous materials, which helps to ensure proper long-term management of our resources and the environment. In addition, CVSan has a goal of Zero Waste (90%+ diversion) by the year 2029.  The Zero Waste Department works to keep the community informed on legislation, new programs and the best recycling practices via public outreach.

Business Services

The Business Services Department (BSD) of CVSan exists to provide management, supervision support, and assistance to the Wastewater Department, and Zero Waste Department programs. BSD is responsible for fiscal and business services that include fiscal operations, human resources, public outreach, facilities maintenance, utilities, office equipment, Information Technology (IT), insurance, Board Member services, and other such services. Operational programs for the department focus on support services, programs, and equipment used by CVSan and its Board of Directors.

Service Area

The Castro Valley Sanitary District, located in Castro Valley, CA, was formed July 25, 1939 and provides for the collection of wastewater and oversees the collection, and proper handling of solid waste from homes and businesses located in its 10-square mile service area.

Castro Valley is located in Northern California, east of San Francisco Bay, in the unincorporated area of Alameda County known as Eden Township. The District serves a population of approximately 55,000, with more than 22,000 single and multi-family residences and businesses. Castro Valley's service area is located about 15 miles east of Oakland and 40 miles north of San Jose.