Arizona Stormwater-General regulations & environmental compliance analysis

Arizona Stormwater-General: What you need to know

Governing Law and Regulations

Arizona Pollutant Discharge Elimination permits: Arizona Administrative Code Rules (AZ Admin. Code R) 18-9-A902

For a Limited Time receive a FREE EHS Report "Recordkeeping for EHS Managers." This special report contains a recordkeeping checklist to help you keep track of your records for major environmental laws and OSHA's Hazard Communication Standard. Download Now

Industrial facilities: AZ Admin. Code R 18-9-A902(B)(8)(a)

Construction activities: AZ Admin. Code R 18-9-A902(B)(8)(c)

Municipalities: AZ Admin. Code R 18-9-A902(D) to R 18-9-A902(F)

Regulatory Agencies

Arizona Department of Environmental Quality (ADEQ) Water Quality Division Water Permits Section

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 federal National Pollutant Discharge Elimination System (NPDES) permit program, including for stormwater discharges associated with industrial facilities, construction activities, and municipal separate storm sewer systems (MS4s). See the national section STORMWATER—GENERAL for additional guidance on the federal program, and the state section STORMWATER—INDUSTRIAL FACILITIES, STORMWATER—CONSTRUCTION ACTIVITIES, and STORMWATER— MUNICIPALITIES for information on the state requirements for specific types of discharges.

The state refers to its NPDES permit program as the Arizona Pollutant Discharge Elimination System (AZPDES) permit program. For more information about AZPDES permits, see the state section NPDES PERMIT.

Administration and enforcement. ADEQ's Water Permits Section administers stormwater discharge permit requirements in Arizona.


Read more about Stormwater-General