Since 1980, EPA's Superfund program has helped protect human health and the environment by managing the cleanup of the nation's worst hazardous waste sites and responding to local and nationally significant environmental emergencies. Below you will find a timeline highlighting some of the most notable milestones in the history of Superfund and other cleanup programs. (You may also view a printable version of the timeline here.) Click on the links for more information about a particular topic or event.