This image may be protected by Copyright Law (Title 17 U.S.C.). Copyright restrictions applying to the reproduction and use of this image are available from the Sacramento Public Library.
Description
This circa-1955 photograph shows the interior of the filter control gallery at Sacramento's water filtration plant. It was equipped with 16 filters, each accommodating a normal capacity of 4 million gallons of water a day. Filters consisted of four layers of graded gravel and a layer of sand, 24 to 30 inches deep. Water would travel to the filters after sedimentation and prior to storage and delivery.
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