On June 1, 2020, the EPA finalized the “Clean Water Act Section 401 Certification Rule” to implement the water quality certification process consistent with the text and structure of the CWA.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Overview of the Clean Water Act Section 401 Certification Rule (PDF)(2 pp, 173 K, June 2020)
- Frequently Asked Questions about the Clean Water Act Section 401 Certification Rule (PDF)(2 pp, 170 K, June 2020)