Code of Federal Regulations · Subpart

Subpart C — Procedures For Review And Revision Of Water Quality Standards

40 C.F.R. pt. 131, subpt. C

• § 131.20 State Review And Revision Of Water Quality Standards
• § 131.21 Epa Review And Approval Of Water Quality Standards
• § 131.22 Epa Promulgation Of Water Quality Standards