| Surface water quality standards are one of the cornerstones of the Clean Water Act. These standards define the water quality goals for Arizona streams and lakes. The standards also provide the basis for a water quality-based approach to controlling discharges of pollutants to surface waters.
Triennial Review of Surface Water Quality Standards
ADEQ's proposed revisions to the surface water quality standards were published in the Arizona Administrative Register on April 4, 2008. The Notice of Proposed Rulemaking is available for downloading from the Office of the Secretary of State  .
Draft Implementation Procedures Documents
ADEQ has written four documents which provide background information on how the proposed antidegradation, narrative bottom deposits, narrative nutrient standard, and the biocriteria rules were developed, their rationale, and how each is implemented through ADEQ water quality management programs:
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| Web Site Services | Last Revision Jun. 05, 2008