Subpart D - FEDERALLY PROMULGATED WATER QUALITY STANDARDS
- Section 131.31 - Arizona
- Section 131.32 - Reserved
- Section 131.33 - Idaho
- Section 131.34 - Kansas
- Section 131.35 - Colville Confederated Tribes Indian Reservation
- Section 131.36 - Toxics criteria for those states not complying with Clean Water Act section 303(c)(2)(B)
- Section 131.37 - California
- Section 131.38 - Establishment of numeric criteria for priority toxic pollutants for the State of California
- Section 131.40 - Puerto Rico
- Section 131.41 - Bacteriological criteria for those states not complying with Clean Water Act section 303(i)(1)(A)
- Section 131.42 - Antidegradation Implementation Methods for the Commonwealth of Puerto Rico
- Section 131.43 - Maine
- Section 131.44 - Florida
- Section 131.45 - Revision of certain Federal water quality criteria applicable to Washington
- Section 131.46 - Aquatic life criterion for cadmium in Oregon
- Section 131.47 - Aquatic life criteria for aluminum in Oregon