40 CFR Part 131 - Subpart D - Federally Promulgated Water Quality Standards
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- § 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.