REGULATIONS
Rulings
AD/CVD
Notices
HTSUS
U.S. Code
Regs
More
Ports
About
Updates
Apps
Larger font
Smaller font
CustomsMobile Pro
beta now open!
Apply for a FREE beta account. Spaces are limited so apply today.
SIGNUP FOR BETA
SEARCH
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
Regulations last checked for updates: Nov 25, 2024
Title 40 - Protection of Environment last revised: Nov 21, 2024
All Titles
Title 40
Chapter I
Part 131 - PART 131—WATER QUALITY STANDARDS
Subpart A [§ 131.1 - § 131.8] - Subpart A—General Provisions
Subpart B [§ 131.9 - § 131.15] - Subpart B—Establishment of Water Quality Standards
Subpart C [§ 131.20 - § 131.22] - Subpart C—Procedures for Review and Revision of Water Quality Standards
Subpart D [§ 131.31 - § 131.47] - Subpart D—Federally Promulgated Water Quality Standards
authority:
33 U.S.C. 1251
source:
48 FR 51405, Nov. 8, 1983, unless otherwise noted.
.list_box li,p,.cm-search-info,.cm-search-detail,.abt span,.expand-collapse_top
Get the CustomsMobile app!