40 CFR § 433.13 - Effluent limitations representing the degree of effluent reduction attainable by applying the best practicable control technology currently available (BPT).
---identifier: "/us/cfr/t40/s433.13"source: "ecfr"legal_status: "authoritative_unofficial"title: "40 CFR § 433.13 - Effluent limitations representing the degree of effluent reduction attainable by applying the best practicable control technology currently available (BPT)."title_number: 40title_name: "Protection of Environment"section_number: "433.13"section_name: "Effluent limitations representing the degree of effluent reduction attainable by applying the best practicable control technology currently available (BPT)."chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"subchapter_number: "N"subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"part_number: "433"part_name: "METAL FINISHING POINT SOURCE CATEGORY"positive_law: falsecurrency: "2026-03-24"last_updated: "2026-03-24"format_version: "1.1.0"generator: "[email protected]"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(b) (c), (e), and (g), 1316(b) and (c), 1317(b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."regulatory_source: "48 FR 32485, July 15, 1983, unless otherwise noted."cfr_part: "433"---
Identifier
/us/cfr/t40/s433.13
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
Chapter
Environmental Protection Agency
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 ... 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(b) (c), (e), and (g), 1316(b) and (c), 1317(b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217.
# 433.13 Effluent limitations representing the degree of effluent reduction attainable by applying the best practicable control technology currently available (BPT).(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by applying the best practicable control technology currently available (BPT):BPT Effluent Limitations| Pollutant or pollutant property | Maximum for any 1 day | Monthly average shall not exceed || --- | --- | --- || | Milligrams per liter (mg/l) | || Cadmium (T) | 0.69 | 0.26 || Chromium (T) | 2.77 | 1.71 || Copper (T) | 3.38 | 2.07 || Lead (T) | 0.69 | 0.43 || Nickel (T) | 3.98 | 2.38 || Silver (T) | 0.43 | 0.24 || Zinc (T) | 2.61 | 1.48 || Cyanide (T) | 1.20 | 0.65 || TTO | 2.13 | || Oil & Grease | 52 | 26 || TSS | 60 | 31 || pH | () | () || Within 6.0 to 9.0. | | |(b) Alternatively, for industrial facilities with cyanide treatment, and upon agreement between a source subject to those limits and the pollution control authority, the following amenable cyanide limit may apply in place of the total cyanide limit specified in paragraph (a) of this section:| Pollutant or pollutant property | Maximum for any 1 day | Monthly average shall not exceed || --- | --- | --- || | Milligrams per liter (mg/l) | || Cyanide (A) | 0.86 | 0.32 |(c) No user subject to the provisions of this subpart shall augment the use of process wastewater or otherwise dilute the wastewater as a partial or total substitute for adequate treatment to achieve compliance with this limitation.