EPA - 40 CFR PART 131
WATER QUALITY STANDARDS
active, Most Current
| Organization: | EPA |
| Publication Date: | 1 July 2023 |
| Status: | active |
| Page Count: | 97 |
scope:
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act. Additional specific procedures for developing, reviewing, revising, and approving water quality standards for Great Lakes States or Great Lakes Tribes (as defined in 40 CFR 132.2) to conform to section 118 of the Clean Water Act and 40 CFR part 132, are provided in 40 CFR part 132.
[60 FR 15386, Mar. 23, 1995]
Document History
40 CFR PART 131
July 1, 2023
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2021
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2020
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2019
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2018
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2016
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2015
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....
July 1, 2013
WATER QUALITY STANDARDS
This part describes the requirements and procedures for developing, reviewing, revising, and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act....