East Bay Municipal Utility District

East Bay Municipal Utility District. The East Bay Municipal Utility District is a prominent public utility agency providing essential water and wastewater services to a significant portion of the San Francisco Bay Area. Established in the early 20th century, it manages a complex system of reservoirs, pipelines, and treatment facilities to serve over 1.4 million customers. The district is also recognized for its pioneering work in sustainable practices, including water recycling and renewable energy generation from wastewater processes.

History

The district's formation was driven by the rapid population growth in the East Bay following the 1906 San Francisco earthquake and the need for a reliable, municipally-owned water supply independent of San Francisco's systems. Voters approved its creation in 1923, and under the leadership of its first chief engineer, Arthur Powell Davis, the agency embarked on the monumental Mokelumne River project. This involved constructing the Pardee Dam and creating Pardee Reservoir in the Sierra Nevada, along with the original 85-mile Mokelumne Aqueduct to transport water across the Central Valley. Major expansions continued throughout the century, including additional aqueducts and the development of the San Pablo Reservoir and Briones Reservoir systems within the East Bay hills.

Service area and operations

The district's service area encompasses approximately 332 square miles across portions of Alameda County and Contra Costa County. Key cities served include Oakland, Berkeley, Richmond, and Walnut Creek, along with numerous smaller communities such as Alamo, Danville, and San Ramon. Its operations are divided into two primary divisions: the Water System, which manages potable water delivery, and the Wastewater Department, which treats sewage for areas including Oakland and Emeryville. The agency maintains extensive infrastructure, including local reservoirs, pumping plants, and over 4,200 miles of distribution pipelines.

Water supply and infrastructure

The district's primary water source is the Mokelumne River watershed, with water stored in Pardee Reservoir and Camanche Reservoir before being conveyed via three aqueducts to the East Bay. Local supplies from rainfall are captured in a system of reservoirs including San Pablo Reservoir, Briones Reservoir, and Lafayette Reservoir. The water is treated at major facilities like the Sobrante Water Treatment Plant and the Orinda Water Treatment Plant before distribution. To promote conservation and diversify supplies, the district operates the Freeport Regional Water Facility in partnership with the Sacramento County Water Agency and has developed extensive recycled water programs for irrigation and industrial use, supported by the East Bay Municipal Utility District Recycled Water Project.

Wastewater treatment and energy recovery

The district operates one of the largest and most advanced wastewater treatment facilities on the West Coast at its main plant located on San Francisco Bay in Oakland. This facility treats sewage from its member communities and also provides treatment for the West County Agency of Contra Costa County. A landmark achievement is its pioneering anaerobic digestion process, which converts organic waste into biogas used to generate renewable electricity, significantly powering the plant's operations. This innovation has earned recognition from the U.S. Environmental Protection Agency and positions the plant as a net-positive energy producer, with excess biogas also being purified into renewable natural gas.

Governance and finances

The district is governed by a seven-member publicly elected Board of Directors, with each director representing a specific geographic division within the service area. Day-to-day operations are managed by a General Manager appointed by the board. As a public agency, its finances are derived primarily from water and wastewater service charges, along with fees for connection and capacity. The district issues revenue bonds, such as those approved under Proposition 218, to fund major capital improvements for its water and wastewater systems. Financial oversight and rate-setting processes involve public hearings and are subject to review by entities like the Alameda County Local Agency Formation Commission.