Subpart B—Establishment of Water Quality Standards RegSenseWatershed ManagementCFR SubpartWater ProgramsWater QualityEnvironmental Protection Agency (EPA)AntidegradationCFR RegulationsEnvironmentalWater QualityEnglishFocus AreaUSA
§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.['Water Programs']['Antidegradation', 'Watershed Management', 'Water Quality']