40 CFR Part 131 — Water Quality Standards
Subpart A — General Provisions
Subpart B — Establishment of Water Quality Standards
- § 131.9— Protection of Tribal reserved rights.
- § 131.10— Designation of uses.
- § 131.11— Criteria.
- § 131.12— Antidegradation policy and implementation methods.
- § 131.13— General policies.
- § 131.14— Water quality standards variances.
- § 131.15— Authorizing the use of schedules of compliance for water quality-based effluent limits in NPDES permits.
Subpart C — Procedures for Review and Revision of Water Quality Standards
Subpart D — Federally Promulgated Water Quality Standards
- § 131.31— Arizona.
- § 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.
- § 131.48— Water quality standards to protect aquatic life in the Delaware River.