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United States Environmental Protection Agency
Superfund NPL Boundaries
This data layer contains polygon representations of National Priority List ("Supefund") sites throughout US EPA Region 3. Congress passed the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA, also known as "Superfund") in response to a growing national concern about the release of hazardous substances from abandoned waste sites. The term “boundary” should be used with caution as it could be interpreted several different ways. The polygons in this file could be property boundaries where the area of contamination is somewhere within the property but not completely encompassing it. They could be “best guess” limits of actual contamination, they could be limits of where remediation work is actually occurring, or several other definitions. For this sort of detail it is best to contact the project manager assigned to the individual facility.
This polygon boundary data layer is intended to display all of the sites on the National Priority List in US EPA Region 3, also known as Superfund Sites.
Time Period of Content
West Bounding Longitude:
East Bounding Longitude:
North Bounding Latitude:
South Bounding Latitude:
Although these data have been processed successfully on a computer system at the Environmental Protection Agency, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The U.S. Environmental Protection Agency shall not be held liable for improper or incorrect use of the data described and/or contained herein. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.
The Environmental Protection Agency is providing this geospatial information as a public service and does not vouch for the accuracy, completeness, or currency of data. Data provided by external parties is not independently verified by EPA. This data is made available to the public strictly for informational purposes. Data does not represent EPA's official position, viewpoint, or opinion, express or implied. This information is not intended for use in establishing liability or calculating Cost Recovery Statutes of Limitations and cannot be relied upon to create any rights, substantive or procedural, enforceable by any party in litigation with the United States or third parties. EPA reserves the right to change these data at any time without public notice. Please confirm that you are using the most recent copy of both data and metadata.
Environment and Conservation, Human Health and Disease, Environment
US Environmental Protection Agency
Metadata Reference Information
Metadata Date Stamp:
Metadata Standard Name:
FGDC Content Standard for Digital Geospatial Metadata
Metadata Standard Version: