U.S. Code
Regulations
Constitution
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
x
Search
Search guide
U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 19, 2024
All Titles
Title 40
Chapter I
Part 131
Subpart C - Subpart C—Procedures for Review and Revision of Water Quality Standards
§ 131.20 - State review and revision of water quality standards.
§ 131.21 - EPA review and approval of water quality standards.
§ 131.22 - EPA promulgation of water quality standards.
Download the GovRegs app!
