The military spends more than a billion dollars a year to clean up sites its operations have contaminated with toxic waste and explosives. These sites exist in every state in the country. Some are located near schools, residential neighborhoods, rivers and lakes. A full map of these sites has never been made public – until now. Enter your address to see the hazardous sites near you, or select a state. Related story »

The top 20 installations ranked by the cost of cleaning them up.

The top 20 installations ranked by the number of “high” and “medium risk” hazardous sites

The total cost – past and future – of cleaning up hazardous sites, by state

The number of military installations with ongoing “high” and “medium risk” hazardous sites, by state

Update (Dec. 5, 2017): We have changed the source of the installation cost data after being notified by the Department of Defense that they erroneously reported their own cost figures on the DERP website. We are now displaying the costs the department says are the most accurate available, from the Pentagon’s DERP database that we received in a FOIA request.

Note: The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Data: All data comes from the Defense Environmental Restoration Program and the U.S. Army Corps of Engineers, and will be released soon at the ProPublica Data Store. Read our methodology »

Additional design and development by Al Shaw and Mike Tigas