An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Office of Inspector General

Report: Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS) Data Quality

Report #2002-P-00016September 30, 2002

What Was Found

Over 40 percent of CERCLIS data on site actions reviewed was inaccurate or not adequately supported.

Report Materials

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.