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In 2014, the Superfund Program implemented a new information system, the Superfund Enterprise Management System (SEMS). Efforts to migrate data to SEMS and to enhance data quality control are now in the final stages. The Program will continue to rely on the final CERCLIS data set (dated November 12, 2013, which reflects official end of Fiscal Year 2013 Program progress) for public reporting until a complete and accurate SEMS data set is available. The current estimate for refreshing the content on this page is April 2015.


The CERCLIS Public Access Database which contains a selected set of “non-enforcement confidential” information has been retired. The EPA is transitioning to the Superfund Enterprise Management System, or SEMS. SEMS include the same data and content as CERCLIS. As SEMS is made operational, nightly data refresh routines will be reestablished. This webpage will be updated to reflect the status of data updates.

Site information for NPL sites (i.e., sites proposed to the NPL, currently on the final NPL or deleted from the final NPL) is displayed in a standardized site progress profile format. The profile includes information such as the current status of cleanup efforts, what cleanup milestones have been reached and how much liquid and solid-based media have been treated. Non-NPL and archived sites are displayed in a less graphical format.

A search of sites that have been archived from the inventory of active sites can be performed. At the top of the Search page, select the "Archived Sites" radio button.

* Using the Ctrl key while clicking with the mouse, multiple options can be selected within these boxes.

You may make selections in each separate tab before clicking the Search button. Clicking on a different tab's header will not clear the query criteria specified in another tab.

View a list of all NPL sites
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