Photo shows construction underway for the Hyperion Sewage Treatment Plant. From 1894 to 1925, raw sewage was dumped into the waters. The original treatment plant was built in 1925 as a simple screening facility. This proved to be inadequate, however, and just after World War II plans and construction began for a full treatment facility which opened in 1950. Photo dated: December 25, 1947.
Hyperion Treatment Plant (El Segundo, Calif.) Sewage disposal plants--California--El Segundo El Segundo (Calif.) Los Angeles Evening Herald and Express photographs Herald-Examiner Collection photographs
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