Years Available
2002 - present
Annual or more often
Thousands of contaminated sites exist nationally due to hazardous waste being dumped, left out in the open, or otherwise improperly managed. These sites include manufacturing facilities, processing plants, landfills and mining sites. In 1980, Congress established the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). CERCLA, informally called Superfund, allows the U.S. Environmental Protection Agency (EPA) to clean up contaminated sites. It also forces the parties responsible for the contamination to either perform cleanups or reimburse the government for EPA-led cleanup work. Superfund program data are tracked within the EPA's Superfund Enterprise Management System (SEMS) database. Human exposure data are publicly available via the Superfund Program's Site Profile Pages, the Superfund Program's Human Exposure Dashboard, and via EPA's Report on the Environment (ROE). SEMS tracks Superfund National Priorities List (NPL) sites and sites with Superfund Alternative Approach (SAA) agreements in place within the Environmental Indicator (EI) site baseline where government officials, using a structured, published process, have concluded that exposure pathways exist or do not exist where humans may be exposed to contamination in excess of health-based standards (exposure is under control). The data are collected and managed by EPA's Office of Superfund Remediation and Technology Innovation (OSRTI). They are also reported through the ROE program and are available for download from the ROE website. For real time EI Human Exposure determinations for Superfund sites, visit EPA's Human Exposure dashboard.
Population Covered
Superfund National Priorities List (NPL) sites and sites with Superfund Alternative Approach (SAA) agreements.