National Pollutant Discharge Elimination System (NPDES) permit program: Arizona Revised Statutes (AZ Rev. Stat.) 49-255 to 49-255.03
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Arizona Environmental Quality Act, AZ Rev. Stat. 49-101
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Arizona has authorization from the U.S. Environmental Protection Agency (EPA) to administer the National Pollutant Discharge Elimination System (NPDES) permit program, including regulations for biosolids and sludge management. The state's equivalent to the NPDES permit is called the Arizona Pollutant Discharge Elimination System (AZPDES) permit.
Arizona issues NPDES de minimis, biosolids, domestic wastewater, and pesticide general permits, and general permits for stormwater discharges and for confined animal feeding operations (CAFOs), as well as individual permits. See the state sections AG WASTE and STORMWATER—GENERAL