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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

State and Tribal Assumption of Section 404 of the Clean Water Act

Letters to Tribal Leaders on Revising the Assumption Regulations under CWA Section 404

In September 2018, Acting Administrator Wheeler sent letters to tribal leaders announcing opportunities for tribes to provide input on areas of the Clean Water Act Section 404(g) regulations that could benefit from additional clarity.

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