The need for a Stormwater Pollution Prevention Plan on your jobsite started in 1972 when Congress passed the Clean Water Act (CWA) which required the U.S. EPA to develop a phased approach to regulate stormwater discharges under the National Pollutant Discharge Elimination System (NPDES) program.  Section 402(p) of the CWA states that stormwater discharges associated with construction activities to waters of the United States must be authorized by an NPDES permit.

 

On December 5th, 2002, ADEQ received authorization to implement the AZPDES program in Arizona.  In Arizona, except Indian Country, the NPDES program is administered as the Arizona Pollutant Discharge Elimination System (AZPDES) program.