On this page:
State Standards in Effect for CWA Purposes
- [See Title 18, Environmental Quality, Chapter 11, Department of Environmental Quality Water Quality Standards (2011) (PDF)]
(Effective April 13, 2010) State regulation establishing water quality standards for surface waters of the state. Please note that not all parts of this document are effective for Clean Water Act purposes. EPA has not yet acted upon the nutrient control criteria included in this document.
In addition, there are standards related to the FBC, PBC, A&W, and FC designated uses, as well as the elimination of DWS criteria for strontium and tritium (radiochemicals) (R18-11-109.G.3 and G.4), and the elimination of numeric criteria for specific OAWs (R18-11-112.H) that have not yet been acted upon. Please see the cover page for a complete list of these standards.
The corresponding provisions which are in effect for Clean Water Act purposes can be found in [See Title 18, Environmental Quality, Chapter 11, Department of Environmental Quality Water Quality Standards (2002) (PDF)](Effective October 22, 2002). - [See Amendments to Title 18, Environmental Quality, Chapter 11, Department of Environmental Quality Water Quality Standards (PDF)]
(Effective July 3, 2003) Amendments to water quality standards for surface waters of the state. - [See Implementation Guidelines for the Narrative Nutrient Standard (PDF)]
- [See Implementation Guidelines for the State of Arizona Antidegradation Standard (PDF)]
- [See Interim Whole Effluent Toxicity Implementation Guidelines for Arizona (PDF)]
Federally Proposed or Promulgated Standards
- Withdrawal of Federal Nutrient Standards for the State of Arizona (November 6, 2003)
- Federal Promulgation of State Water Quality Standards for Arizona (May 7, 1996)
- Title 18, Environmental Quality, Chapter 11, Department of Environmental Quality Water Quality Standards (2011) (PDF)(134 pp, 3 MB)
- Title 18, Environmental Quality, Chapter 11, Department of Environmental Quality Water Quality Standards (2002) (PDF)(79 pp, 1 MB)
- Amendments to Title 18, Environmental Quality, Chapter 11, Department of Environmental Quality Water Quality Standards (PDF)(15 pp, 158 K)
- Implementation Guidelines for the Narrative Nutrient Standard (PDF)(29 pp, 2 MB)
- Implementation Guidelines for the State of Arizona Antidegradation Standard (PDF)(30 pp, 3 MB)
- Interim Whole Effluent Toxicity Implementation Guidelines for Arizona (PDF)(3 pp, 242 K)