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United States facilities listed on the Superfund National Priorities List (NPL) are included in this dataset. It provides location and identification information from the EPA's Facility Registry Service (FRS), integrating data from the Superfund Enterprise Management System (SEMS). The dataset is maintained by the U.S. Environmental Protection Agency and was last updated in March 2026.
File formats include ZIP and ESRI REST, which may require specific GIS software for full utilization.