Any federal license or permit for an activity that may result in a discharge requires a Clean Water Act Section 401 [33 U.S.C. 1341] Water Quality Certification from the state certifying authority. In Missouri, this is the Missouri Department of Natural Resources. The department has designed precertification conditions to ensure activities carried out in Missouri pursuant to Nationwide Permits authorized by the U.S. Army Corps of Engineers will comply with Missouri water quality requirements. Unless otherwise stated, these conditions are in addition to, not a replacement for, any federal requirements or conditions.
The department invites the public to review and offer written comments on the proposed 2026 certification conditions until July 31, 2025. The public can review the proposed certification conditions below. Other relevant information is available for review and copying upon request. Written comments may be submitted by mail to Missouri Department of Natural Resources, Water Quality Certification, P.O. Box 176, Jefferson City, MO 65102-0176, or by email to wpsc401cert@dnr.mo.gov. Please include the certification number in the comment letter.