This general permit provides a simpler, faster way to obtain permit coverage for certain types of non-stormwater discharges to protected surface waters, as an alternative to individual Arizona Pollutant Discharge Elimination System (AZPDES) permitting. De Minimis discharge is defined as a discharge to U.S. waters that: meets the applicable surface water quality standards; is a low-flow and/or low-frequency event, or is otherwise determined by ADEQ to have no significant impacts on water quality or the environment; is conducted with appropriate best management practices; and does not last continuously for more than 30 days unless ADEQ approves a longer discharge period.

What discharges need De Minimis General Permit (DMGP) coverage?

This permit is available to cover discharges from potable water systems; hydrostatic testing of pipes, tanks and vessels; subterranean dewatering (groundwater from foundation, footer drain, basement, underground structure or construction dewatering); well purging; well development, maintenance, and aquifer testing; reclaimed water systems; uncontaminated air conditioning condensate or overflow from residential evaporative coolers; charitable noncommercial car washes; freshwater swimming pool drainage that has been dechlorinated; or other discharges determined by ADEQ to be eligible for specific approval. Permit coverage can be temporary or long-term. With some exceptions, coverage is requested by submitting a Notice of Intent (NOI) online through myDEQ. 

The 2026 DMGP is effective as of Sept. 1, 2026

• Response to Comments Documents | View May 5, 2026 > | View Sept. 1, 2026 >
• Final Permit | View Permit >  
• Final Fact Sheet | View FS >  

To Renew Coverage:

Renewal timeframe: Sept. 1 – Oct. 30, 2026

If the information on your existing NOI is valid, you may choose the “RENEW” option in myDEQ. The system will allow you to review the existing information, then certify and pay for a new NOI authorization number. This new NOI authorization number will be your permit number through August 2031, or until you terminate coverage.

If you have existing coverage but would like to make changes to the existing NOI information, you must choose the “GET NEW” option from the myAPPLICATIONS page on the myDEQ Dashboard and enter new information, then certify and pay for a new NOI authorization number. This new NOI authorization number will be your permit number through August 2031, or until you terminate coverage.

For New Coverage:

Permit term: Sept. 1, 2026 – Aug. 31, 2031

Obtain new coverage in myDEQ by choosing the “GET NEW” option from the myAPPLICATIONS page on the myDEQ Dashboard and enter information requested, then certify and pay for the NOI authorization number. This NOI authorization number will be your permit number through August 2031, or until you terminate coverage.

Have Questions? Join a Virtual Open Office Session via Zoom

Dates: Tuesday, Sept. 1 – Friday, Sept. 4, 2026
Time: 8:30 – 9:30 a.m.
Link: Join via Zoom >

Dates: Tuesday, Sept. 8 – Friday, Sept. 11, 2026
Time: 2 – 3 p.m.
Link: Join via Zoom >

Fees

Application fees are based on whether there will be a single source discharge or an areawide discharge. Annual fees will be invoiced each year that the permit is active, in the anniversary month that the NOI was issued.

More information about fees | View >

Paperless NOIs and NOTs with myDEQ

To submit a Notice of Intent (NOI) for DMGP coverage or a Notice of Termination (NOT), you will need to use myDEQ | Learn More >