# 40 CFR § 125.2: Definitions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-125.2

## Section

- **Citation:** 40 CFR § 125.2
- **Heading:** Definitions
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 40—Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER D—WATER PROGRAMS > PART 125—CRITERIA AND STANDARDS FOR THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM > Subpart A—Criteria and Standards for Imposing Technology-Based Treatment Requirements Under Sections 301(b) and 402 of the Act

## Text

For the purposes of this part, any reference to the Act shall mean the Clean Water Act of 1977 (CWA). Unless otherwise noted, the definitions in parts 122, 123 and 124 apply to this part.
[45 FR 33512, May 19, 1980]

## Nearby sections

- [40 CFR § 125.1 § 125.1 Purpose and scope.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.1.md)
- [40 CFR § 125.2 § 125.2 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.2.md)
- [40 CFR § 125.3 § 125.3 Technology-based treatment requirements in permits.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.3.md)
- [40 CFR § 125.10 § 125.10 Purpose and scope.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.10.md)
- [40 CFR § 125.11 § 125.11 Criteria.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.11.md)
- [40 CFR § 125.30 § 125.30 Purpose and scope.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.30.md)
- [40 CFR § 125.31 § 125.31 Criteria.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.31.md)
- [40 CFR § 125.32 § 125.32 Method of application.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.32.md)
- [40 CFR § 125.56 § 125.56 Scope and purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.56.md)
- [40 CFR § 125.57 § 125.57 Law governing issuance of a section 301(h) modified permit.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.57.md)
- [40 CFR § 125.58 § 125.58 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.58.md)
- [40 CFR § 125.59 § 125.59 General.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.59.md)
- [40 CFR § 125.60 § 125.60 Primary or equivalent treatment requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.60.md)
- [40 CFR § 125.61 § 125.61 Existence of and compliance with applicable water quality standards.](https://www.frixlaw.com/law-library/statutes/ecfr-40-125.61.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-40-125.2. Check the current official text before relying on it. Not legal advice.