Regulations last checked for updates: Feb 12, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
§ 417.40 - Applicability; description of the glycerine concentration subcategory.

The provisions of this subpart are applicable to discharges resulting from the concentration of sweet water from saponification or fat splitting to approximately 60 to 80 percent crude glycerine content.

authority: Secs. 301, 304 (b) and (c), 306 (b) and (c), and 307(c) of the Federal Water Pollution Control Act as amended, (the Act); 33 U.S.C. 1251,1311,1314,1316,86. 816
source: 39 FR 13372, Apr. 12, 1974, unless otherwise noted.
cite as: 40 CFR 417.40