Subpart A. Subpart A—General Provisions

• § 131.1 - Scope.
• § 131.2 - Purpose.
• § 131.3 - Definitions.
• § 131.4 - State authority.
• § 131.5 - EPA authority.
• § 131.6 - Minimum requirements for water quality standards submission.
• § 131.7 - Dispute resolution mechanism.
• § 131.8 - Requirements for Indian Tribes to administer a water quality standards program.