Regulations last checked for updates: Feb 12, 2026

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

The provisions of this subpart are applicable to discharges resulting from the production of finished glycerine of various grades (e.g., USP) through concentration from crude glycerine by means of distillation.

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 417.50