Regulations last checked for updates: Jan 30, 2025

Title 40 - Protection of Environment last revised: Nov 08, 2025
authority: Secs. 301, 304 (b), (c), 306(b), Federal Water Pollution Control Act, as amended (33 U.S.C. 1251,1311,1314,86. 816
source: 41 FR 29079, July 14, 1976, unless otherwise noted.