Regulations last checked for updates: Apr 25, 2024

Title 40 - Protection of Environment last revised: Jun 26, 2024
authority: Secs. 301, 304(b), (c), (e), and (g), 306(b) and (c), 307(b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1971, as amended by the Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311,1314,e,and,1316,1317,1318; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217
source: 48 FR 32485, July 15, 1983, unless otherwise noted.