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Overview

This gigantic water treatment facility, capable of processing 520 million gallons of water per day, was named for Frank Elwin Weymouth (1874-1941), one of the foremost reclamation and hydraulic engineers of his time, and the Metropolitan Water District of Southern California's first chief engineer and general manager from 1929 to 1941. Weymouth was a pivotal figure in the design and completion of the Colorado River Aqueduct during the 1930s. He passed away just after it was finished.

Building History

Architect Daniel A. Elliott was involved in the design of the Weymouth Memorial Water Softening and Filtration Plant in La Verne, CA. The plant's web site stated of its history in 2017: "The F.E. Weymouth Treatment Plant in the city of La Verne is the first treatment plant built by Metropolitan. It largely serves Los Angeles and Orange counties. Completed in 1940, it is noted for its Mission Revival-style architecture. The plant was part of the district's Colorado River Aqueduct construction project. Today, it treats water from the Colorado River and the State Water Project, which imports supplies from Northern California. Weymouth has a treatment capacity of 520 million gallons a day, the equivalent of filling the Rose Bowl every four hours." (See Metropolitan Water District of Southern California (MWD), "Weymouth Treatment Plant," accessed 11/01/2017.)

Building Notes

Weymouth's papers, the Frank E. Weymouth Papers, Water Resources Collection, has been preserved at the Libraries of the Claremont Colleges. Special Collections, Honnold/Mudd Library.

PCAD id: 21536