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.

Contaminant Candidate List (CCL) and Regulatory Determination

CCL 3 Support Documents - Universe Documents

This page contains support documents related to the identification of the Universe for CCL 3. For information on the CCL 3 and the contaminant selection process, please visit the CCL 3 home page.

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