Governing Law and Regulations
Arizona Department of Environmental Quality (ADEQ) Water Quality Division
U.S. Environmental Protection Agency (EPA) Region 9
U.S. Army Corps of Engineers (Corps) Los Angeles District
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. The Arizona Environmental Quality Act requires the Arizona Department of Environmental Quality (ADEQ) to adopt water quality standards and permitting requirements for all navigable waters and all waters in all aquifers to preserve and protect those waters for all present and reasonably foreseeable future uses.
The U.S. Environmental Protection Agency (EPA) has authorized Arizona to administer the National Pollutant Discharge Elimination System (NPDES) permitting program. The state's equivalent to the NPDES permit is called the Arizona Pollutant Discharge Elimination System (AZPDES) permit. See the national ...