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Code of Federal Regulations
C.F.R. Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER D—WATER PROGRAMS
PART 131—WATER QUALITY STANDARDS
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Subpart B—Establishment of Water Quality Standards
§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.
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