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Regulations last checked for updates: Feb 16, 2025
Title 40 - Protection of Environment last revised: Nov 16, 2025
All Titles
Title 40
Chapter I
Part 420 - PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY
GENERAL PROVISIONS
§ 420.01 - Applicability.
§ 420.02 - General definitions.
§ 420.03 - Alternative effluent limitations representing the degree of effluent reduction attainable by the application of best practicable control technology currently available, best available technology economically achievable, best available demonstrated control technology, and best conventional pollutant control technology (the “water bubble”).
§ 420.04 - Calculation of pretreatment standards.
§ 420.05 - Pretreatment standards compliance date.
§ 420.06 - Removal credits for phenols (4AAP).
§ 420.07 - Effluent limitations guidelines and standards for pH.
§ 420.08 - Non-process wastewater and storm water.
Subpart A [§ 420.10 - § 420.18] - Subpart A—Cokemaking Subcategory
Subpart B [§ 420.20 - § 420.29] - Subpart B—Sintering Subcategory
Subpart C [§ 420.30 - § 420.37] - Subpart C—Ironmaking Subcategory
Subpart D [§ 420.40 - § 420.48] - Subpart D—Steelmaking Subcategory
Subpart E [§ 420.50 - § 420.57] - Subpart E—Vacuum Degassing Subcategory
Subpart F [§ 420.60 - § 420.67] - Subpart F—Continuous Casting Subcategory
Subpart G [§ 420.70 - § 420.77] - Subpart G—Hot Forming Subcategory
Subpart H [§ 420.80 - § 420.87] - Subpart H—Salt Bath Descaling Subcategory
Subpart I [§ 420.90 - § 420.97] - Subpart I—Acid Pickling Subcategory
Subpart J [§ 420.100 - § 420.107] - Subpart J—Cold Forming Subcategory
Subpart K [§ 420.110 - § 420.117] - Subpart K—Alkaline Cleaning Subcategory
Subpart L [§ 420.120 - § 420.127] - Subpart L—Hot Coating Subcategory
Subpart M [§ 420.130 - § 420.137] - Subpart M—Other Operations Subcategory
authority:
33 U.S.C. 1311
,
1314
,
1316
,
1317
,
1318
,
1342
,
and
source:
47 FR 23284, May 27, 1982, unless otherwise noted.
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