https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8802941
Aeration Tanks At The Blue Plains Sewage Treatment Plant On The Anacostia River, April 1973
Original Caption: Aeration Tanks At The Blue Plains Sewage Treatment Plant On The Anacostia River. More Tanks Are Being Added To Meet Needs Of Ever-expanding Suburbs, April 1973. Photographer: Swanson, Dick. Original public domain image from Flickr
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