40 CFR § 123.2 - Definitions.

---
identifier: "/us/cfr/t40/s123.2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 123.2 - Definitions."
title_number: 40
title_name: "Protection of Environment"
section_number: "123.2"
section_name: "Definitions."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "123"
part_name: "STATE PROGRAM REQUIREMENTS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Clean Water Act, 33 U.S.C. 1251"
regulatory_source: "48 FR 14178, Apr. 1, 1983, unless otherwise noted."
cfr_part: "123"
---