US Army Corps of Engineers
North Atlantic Division Website

Washington Aqueduct Pilot Study
Water testing inside the Advanced Treatment Pilot Study trailer at the McMillan Water Treatment Plant, Washington Aqueduct, District of Columbia, Dec. 19, 2018. (U.S. Army photo by Sarah Lazo)

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Photo by: Sarah Lazo |  VIRIN: 181219-A-AQ354-0006.JPG