Governing Law and Regulations
Arizona Department of Environmental Quality (ADEQ) Water Quality Division
Arizona Department of Agriculture (ADA)
U.S. Environmental Protection Agency (EPA) Region 9
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Arizona is authorized by the U.S. Environmental Protection Agency (EPA) to administer the National Pollutant Discharge Elimination System (NPDES) permit program, including for concentrated animal feeding operations (CAFOs), which is referred to as the Arizona Pollutant Discharge Elimination System (AZPDES) permit program in the state.
Arizona also has its own water quality program for both surface water and groundwater. Under the water quality program, some agricultural activities may require both an AZPDES permit ...