Regulations last checked for updates: Apr 30, 2024

Title 40 - Protection of Environment last revised: Jun 26, 2024
authority: Secs. 301, 304, 306, 307, 308, and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977, 33 U.S.C. 1311,1314,1316,1317,1318,and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217, unless otherwise noted
source: 48 FR 15394, Apr. 8, 1983, unless otherwise noted.