Title 40

PART 131 SUBPART C

Subpart C - Procedures for Review and Revision of Water Quality Standards

• 33 U.S.C. 1251 et seq.
• 48 FR 51405, Nov. 8, 1983, unless otherwise noted.

40:24.0.1.1.20.3.16.1	SECTION 131.20	131.20 State review and revision of water quality standards.
40:24.0.1.1.20.3.16.2	SECTION 131.21	131.21 EPA review and approval of water quality standards.
40:24.0.1.1.20.3.16.3	SECTION 131.22	131.22 EPA promulgation of water quality standards.

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