# 40 CFR § 125.56: Scope and purpose

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-125.56

## Section

- **Citation:** 40 CFR § 125.56
- **Heading:** Scope and purpose
- **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 G—Criteria for Modifying the Secondary Treatment Requirements Under Section 301(h) of the Clean Water Act

## Text

This subpart establishes the criteria to be applied by EPA in acting on section 301(h) requests for modifications to the secondary treatment requirements. It also establishes special permit conditions which must be included in any permit incorporating a section 301(h) modification of the secondary treatment requirements (“section 301(h) modified permit”).

## 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-40-125.56. Check the current official text before relying on it. Not legal advice.