Subpart B. 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.