The Defense Environmental Restoration Program, which is administered by the Department of Defense, measures and documents cleanup efforts at current and former military locations. These efforts include the cleanup of sites that contain toxic pollutants and contaminants in the soil or water, as well as sites that contain explosives or discarded military munitions. 

This Oracle database, collected under the Defense Environmental Restoration Program, documents the Department of Defense’s cleanup program for active military installations, closed or closing installations and formerly used defense sites. ProPublica obtained this information, last updated in 2015, through a Freedom of Information.