An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

National Pollutant Discharge Elimination System (NPDES)

Water Quality Trading Toolkit for Permit Writers

EPA's Water Quality Trading Toolkit for Permit Writers is a “how-to” manual on designing and implementing water quality trading programs.
Image of cover of Water Quality Trading Toolkit
The Toolkit helps NPDES permitting authorities incorporate trading provisions into permits. It will help improve the quality and consistency of trading programs across the nation.

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

Full Document

Chapters

Appendices

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