• State Standards in Effect for CWA Purposes
• Federally Proposed or Promulgated Standards

State Standards in Effect for CWA Purposes

• [See Section 1: Title IV, Chapter 60, Wastewater Treatment and Disposal ]
• [See Section 2: Chapter 61, Water Quality Standards ]
  (Effective January 19, 2017) Surface water quality standards for waters of the state.  Please note that not all provisions are effective for Clean Water Act purposes (see cover page for more information).
  • The corresponding provisions which are in effect for Clean Water Act purposes can be found in [See Section 2: Chapter 61, Water Quality Standards ]
    (Effective January 5, 2012). See the cover page for more information.
• [See Surface Water Classifications ]
  (Effective March 3, 2020)
• [See Section 3: Modifications to Chapter IV - Basin Plan Support Document ]

Federally Proposed or Promulgated Standards

• None at this time.

• Section 1: Title IV, Chapter 60, Wastewater Treatment and Disposal (PDF)(12 pp, 1 MB)
• Section 2: Chapter 61, Water Quality Standards (PDF)(27 pp, 348 K)
• Section 2: Chapter 61, Water Quality Standards (PDF)(26 pp, 385 K)
• Surface Water Classifications (PDF)(114 pp, 4 MB)
• Section 3: Modifications to Chapter IV - Basin Plan Support Document (PDF)(98 pp)