40 CFR § 406.64 - Pretreatment standards for existing sources.
---identifier: "/us/cfr/t40/s406.64"source: "ecfr"legal_status: "authoritative_unofficial"title: "40 CFR § 406.64 - Pretreatment standards for existing sources."title_number: 40title_name: "Protection of Environment"section_number: "406.64"section_name: "Pretreatment standards for existing sources."chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"subchapter_number: "N"subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"part_number: "406"part_name: "GRAIN MILLS POINT SOURCE CATEGORY"positive_law: falsecurrency: "2026-04-05"last_updated: "2026-04-05"format_version: "1.1.0"generator: "[email protected]"authority: "Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c), 1317(c); 86 Stat. 816 Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."regulatory_source: "39 FR 10513, Mar. 20, 1974, unless otherwise noted."cfr_part: "406"---
Identifier
/us/cfr/t40/s406.64
Currency
2026-04-05
Positive Law
No
Updated
2026-04-05
Chapter
Environmental Protection Agency
Authority
Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c), 1317(c); 86 Stat. 816 Pub. L. 92-... Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c), 1317(c); 86 Stat. 816 Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217.
# 406.64 Pretreatment standards for existing sources.Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403. In addition, the following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties controlled by this section which may be discharged to a publicly owned treatment works by a point source subject to the provisions of this subpart.| Pollutant or pollutant property | Pretreatment standard || --- | --- || pH | No limitation. || BOD | Do. || TSS | Do. |[40 FR 6436, Feb. 11, 1975, as amended at 60 FR 33937, June 29, 1995]