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