Skip to main content

Climate Change and the Nation’s Most Contaminated Hazardous Waste Sites

Posted on November 18, 2019

Climate change may increase the frequency and intensity of certain natural disasters, which could damage Superfund site—among the nation’s most contaminated hazardous waste sites. For instance, flooding from Hurricane Harvey in 2017 damaged several Superfund sites in the greater Houston area.

Since most Superfund sites (about 90%) are located on nonfederal land, we identified nonfederal Superfund sites and the natural hazards (such as wildfires and flooding) that might impact them.

Check out our recent interactive graphic for details on each of these Superfund sites and their potential hazards. To learn more about climate change and Superfund sites, visit the full report page.

GIF of the superfund site interactive graphic


Related Products

About Watchblog

GAO's mission is to provide Congress with fact-based, nonpartisan information that can help improve federal government performance and ensure accountability for the benefit of the American people. GAO launched its WatchBlog in January, 2014, as part of its continuing effort to reach its audiences—Congress and the American people—where they are currently looking for information.

The blog format allows GAO to provide a little more context about its work than it can offer on its other social media platforms. Posts will tie GAO work to current events and the news; show how GAO’s work is affecting agencies or legislation; highlight reports, testimonies, and issue areas where GAO does work; and provide information about GAO itself, among other things.

Please send any feedback on GAO's WatchBlog to