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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jun 20, 2025

All TitlesTitle 40Chapter IPart 122Subpart A - Subpart A—Definitions and General Program Requirements
§ 122.1 - Purpose and scope.
§ 122.2 - Definitions.
§ 122.3 - Exclusions.
§ 122.4 - Prohibitions (applicable to State NPDES programs, see § 123.25).
§ 122.5 - Effect of a permit.
§ 122.6 - Continuation of expiring permits.
§ 122.7 - Confidentiality of information.
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