Title 40

PART 131

Part 131 - Water Quality Standards

PART 131 - WATER QUALITY STANDARDS Authority:33 U.S.C. 1251 et seq. Source:48 FR 51405, Nov. 8, 1983, unless otherwise noted.

40:24.0.1.1.20.1SUBPART A
Subpart A - General Provisions
40:24.0.1.1.20.1.16.1SECTION 131.1
   131.1 Scope.
40:24.0.1.1.20.1.16.2SECTION 131.2
   131.2 Purpose.
40:24.0.1.1.20.1.16.3SECTION 131.3
   131.3 Definitions.
40:24.0.1.1.20.1.16.4SECTION 131.4
   131.4 State authority.
40:24.0.1.1.20.1.16.5SECTION 131.5
   131.5 EPA authority.
40:24.0.1.1.20.1.16.6SECTION 131.6
   131.6 Minimum requirements for water quality standards submission.
40:24.0.1.1.20.1.16.7SECTION 131.7
   131.7 Dispute resolution mechanism.
40:24.0.1.1.20.1.16.8SECTION 131.8
   131.8 Requirements for Indian Tribes to administer a water quality standards program.
40:24.0.1.1.20.2SUBPART B
Subpart B - Establishment of Water Quality Standards
40:24.0.1.1.20.2.16.1SECTION 131.10
   131.10 Designation of uses.
40:24.0.1.1.20.2.16.2SECTION 131.11
   131.11 Criteria.
40:24.0.1.1.20.2.16.3SECTION 131.12
   131.12 Antidegradation policy and implementation methods.
40:24.0.1.1.20.2.16.4SECTION 131.13
   131.13 General policies.
40:24.0.1.1.20.2.16.5SECTION 131.14
   131.14 Water quality standards variances.
40:24.0.1.1.20.2.16.6SECTION 131.15
   131.15 Authorizing the use of schedules of compliance for water quality-based effluent limits in NPDES permits.
40:24.0.1.1.20.3SUBPART C
Subpart C - Procedures for Review and Revision of Water Quality Standards
40:24.0.1.1.20.3.16.1SECTION 131.20
   131.20 State review and revision of water quality standards.
40:24.0.1.1.20.3.16.2SECTION 131.21
   131.21 EPA review and approval of water quality standards.
40:24.0.1.1.20.3.16.3SECTION 131.22
   131.22 EPA promulgation of water quality standards.
40:24.0.1.1.20.4SUBPART D
Subpart D - Federally Promulgated Water Quality Standards
40:24.0.1.1.20.4.16.1SECTION 131.31
   131.31 Arizona.
40:24.0.1.1.20.4.16.2SECTION 131.32
   131.32 [Reserved]
40:24.0.1.1.20.4.16.3SECTION 131.33
   131.33 Idaho.
40:24.0.1.1.20.4.16.4SECTION 131.34
   131.34 Kansas.
40:24.0.1.1.20.4.16.5SECTION 131.35
   131.35 Colville Confederated Tribes Indian Reservation.
40:24.0.1.1.20.4.16.6SECTION 131.36
   131.36 Toxics criteria for those states not complying with Clean Water Act section 303(c)(2)(B).
40:24.0.1.1.20.4.16.7SECTION 131.37
   131.37 California.
40:24.0.1.1.20.4.16.8SECTION 131.38
   131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California.
40:24.0.1.1.20.4.16.9SECTION 131.40
   131.40 Puerto Rico
40:24.0.1.1.20.4.16.10SECTION 131.41
   131.41 Bacteriological criteria for those states not complying with Clean Water Act section 303(i)(1)(A).
40:24.0.1.1.20.4.16.11SECTION 131.42
   131.42 Antidegradation Implementation Methods for the Commonwealth of Puerto Rico.
40:24.0.1.1.20.4.16.12SECTION 131.43
   131.43 Maine.
40:24.0.1.1.20.4.16.13SECTION 131.44
   131.44 Florida.
40:24.0.1.1.20.4.16.14SECTION 131.45
   131.45 Revision of certain Federal water quality criteria applicable to Washington.
40:24.0.1.1.20.4.16.15SECTION 131.46
   131.46 Aquatic life criterion for cadmium in Oregon.