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U.S. Code Regulations Constitution Journal Apps
  1. Regulations
    All Titles
  2. title 40
    Protection of Environment
  3. chapter I-i23
    ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
  4. part 131
    WATER QUALITY STANDARDS

Part 131. WATER QUALITY STANDARDS

  • SUBPART A [§ 131.1 - § 131.8] - General Provisions
  • SUBPART B [§ 131.10 - § 131.15] - Establishment of Water Quality Standards
  • SUBPART C [§ 131.20 - § 131.22] - Procedures for Review and Revision of Water Quality Standards
  • SUBPART D [§ 131.31 - § 131.47] - Federally Promulgated Water Quality Standards
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