Water Authority Partners with MWD
The Metropolitan Water District of Southern California’s (MWD) water comes from the Colorado River via the Colorado River Aqueduct and Northern California rivers via the State Water Project. The blend of the two sources fluctuates depending on hydrologic conditions and how MWD operates its system.
The last year San Diego County had a sufficient local supply of water to meet the demands of its growing population was 1946. Lacking adequate local water resources, the Water Authority joined the Metropolitan Water District of Southern California in late 1946 to gain a connection to the Colorado River to meet the needs of the post-war, booming San Diego region. As part of the requirements for annexation the San Diego region’s Colorado River water rights were transferred to MWD. In 1960, MWD threw its support behind the new State Water Project and received its first deliveries from the project in 1972.
MWD Board
MWD is governed by a 38-member Board of Directors, representing each of the District’s 26 member agencies. The Water Authority has four designated Delegates on MWD’s Board of Directors who represent the Water Authority’s interests at MWD and, as MWD Board members, govern the agency. In their capacity as MWD Board members, the Delegates host facility inspection tours.
The Water Authority’s Delegates
Relationship With MWD
Delivery Agreement
To improve the region’s water reliability, the Water Authority launched its diversification effort in the late 1990s. In 2003, as part of the Quantification Settlement Agreement, the Water Authority began receiving its independently obtained Colorado River supplies through water conservation and transfer agreements. The Water Authority pays MWD to transport these independent supplies to San Diego County through a delivery agreement in addition to paying for its MWD supply purchases. While the Water Authority still purchases Colorado River and State Water Project water from MWD, the Water Authority launched its diversification effort in the late 1990s to improve the region’s water reliability.
Water Supply
The Metropolitan Water District Act legally entitles each member agency to a preferential right to purchase a certain amount of MWD’s supplies. Under Section 135, each MWD member agency has a preferential right to a percentage of MWD’s available water supplies based on the member’s past payments toward MWD’s capital and operating costs, excluding payments for water purchases. As of June 30, 2020, the Water Authority has preferential right to 25.83 percent of MWD’s water supply. (Preferential rights are updated annually.) For comparison, in fiscal year 2020, the Water Authority purchased about 6% of the water MWD sold.
As part of rulings on landmark litigation that was initiated in 2010, courts found that MWD under-calculated the Water Authority’s statutory water right, or preferential right to MWD water. As a result of the recalculation, the Water Authority’s preferential right to MWD water increased by approximately 100,000 acre-feet of additional MWD water annually – about twice the production of the $1 billion Claude “Bud” Lewis Carlsbad Seawater Desalination Plant. This same litigation also resulted in savings of $45 million since the court also found that MWD illegally charged “water stewardship” fees on its transportation rates from 2011-2014. Ultimately, this litigation has yielded several benefits for San Diego County ratepayers. “San Diego prevailed, and the judgment not only benefits its own ratepayers but all of the nearly 19 million people in Metropolitan’s service area because enforcing cost-of-service principles serves the interests of all ratepayers,” said Superior Court Judge Anne-Christine Massullo in her Jan. 13, 2021 order, which MWD is appealing.
Policy
As MWD’s largest financial contributor, the Water Authority promotes policies at MWD that embrace transparent governance and fiscal responsibility, create equity among MWD member agencies, and facilitate the efficient and optimal use of resources. The Water Authority’s MWD Program advises the agency’s Board officers and MWD Delegates in developing and implementing strategies to achieve the Water Authority’s water resiliency and fiscal goals at MWD.
The MWD Program staff works closely with other Water Authority departments to analyze MWD programs and policies and their impacts on the Water Authority’s management strategies and operations. Program staff also collaborates with MWD board members, MWD member agencies and other stakeholders to advance the Water Authority’s positions at MWD.