40 CFR § 466.24 - Pretreatment standards for existing sources.
---identifier: "/us/cfr/t40/s466.24"source: "ecfr"legal_status: "authoritative_unofficial"title: "40 CFR § 466.24 - Pretreatment standards for existing sources."title_number: 40title_name: "Protection of Environment"section_number: "466.24"section_name: "Pretreatment standards for existing sources."chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"subchapter_number: "N"subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"part_number: "466"part_name: "PORCELAIN ENAMELING 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), (c), (e), and (g), 306 (b) and (c), 307 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) (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e) and (g), 1316 (b) and (c), 1317 (b) and (c), and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."regulatory_source: "47 FR 53184, Nov. 24, 1982, unless otherwise noted."cfr_part: "466"---
Identifier
/us/cfr/t40/s466.24
Currency
2026-04-05
Positive Law
No
Updated
2026-04-05
Chapter
Environmental Protection Agency
Authority
Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 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) (the ... Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 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) (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e) and (g), 1316 (b) and (c), 1317 (b) and (c), and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217.
# 466.24 Pretreatment standards for existing sources.(a) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.(1) There shall be no discharge of process wastewater pollutants from metal preparation operations.(2) The discharge of process wastewater pollutants from all porcelain enameling coating operations shall not exceed the values set forth below:Subpart B—PSES| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average || --- | --- | --- || | Milligrams per liter (mg/l) | || Chromium | 0.42 | 0.17 || Lead | 0.15 | 0.13 || Nickel | 1.41 | 1.00 || Zinc | 1.33 | 0.56 |(b) In cases when POTW find it necessary to impose mass pretreatment standards the following equivalent mass standards are provided.(1) There shall be no discharge of process wastewater pollutants from metal preparation operations.(2) The discharge of process watewater pollutants from all porcelain enameling costing operations shall not exceed the values set forth below:Subpart B—PSES| | | | | || --- | --- | --- | --- | --- || | Metric units—mg/m (English Units—pounds per million ft) of area coated | | | || Chromium | 0.53 | (0.11) | 0.22 | (0.05) || Lead | 0.19 | (0.04) | 0.16 | (0.03) || Nickel | 1.78 | (0.37) | 1.26 | (0.26) || Zinc | 1.68 | (0.35) | 0.71 | (0.15) |[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36544, Sept. 6, 1985]