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Welcome to ADEQ

Our Mission and Vision

To protect and enhance public health and the environment in Arizona.
  • Through consistent, science-based environmental regulation; and clear, equitable engagement and communication;
  • With integrity, respect, and the highest standards of effectiveness and efficiency;
  • Because Arizonans treasure the unique environment of our state and its essential role in sustaining well-being and economic vitality, today and for future generations.

Comments and Testimony


July 15, 2024 | ADEQ Comments on EPA's Proposed Action for AZ's Regional Haze SIP for the Second Planning Period | View Letter >

June 25, 2024 | ADEQ Comments on EPA's "Protection of Visibility: Amendments to Requirements for State Plans Rule" | View Letter >

June 19, 2024 | ADEQ Requests Congress Increase Federal Grants to State and Local Air Quality Agencies to $500 Million in FY25 | View Letters >

May 31, 2024 | ADEQ Requests EPA Extend Comment Period for Proposed Air Quality Regional Haze SIP for the Second Implementation Period | View Letter >

May 16, 2024 | ADEQ Comments on EPA's Proposed Ozone Good Neighbor Plan for AZ | View Letter > 

Previous Year Comments and Testimony

Dec. 21, 2023 | ADEQ Comments on EPA's 2023 Proposed Revisions to the Guideline on Air Quality Models and Enhancements to the AERMOD Dispersion Modeling system | View Letter >

Nov. 17, 2023 | ADEQ Comments on Proposed Amendments to the Air Emissions Reporting Requirements | View Letter >

Aug. 22, 2023 |  ADEQ Comments on EPA's Proposed Rulemaking on National Emission Standards for Hazardous Air Pollutants (Primary Copper Smelting) | View Letter >

Aug. 4, 2023 | ADEQ Comments on EPA's Proposed Power Plant Rule | View Letter > 

July 13, 2023 | ADEQ Presentation to Joint Legislative Ad Hoc Study Committee on Air Quality and Energy re: State Air Quality Planning — State Implementation Plan (SIP) | View Presentation >

March 20, 2023 | ADEQ Comments on EPA's Proposed Rulemaking on Reconsideration of the National Ambient Air Quality Standards for Particulate Matter | View Letter > 

Meetings and Hearings | Public Notices | Press Releases

Upcoming Events

Access public involvement opportunities, information and key resources

24/7 Access to What you Need

Online Services


QuickPay is ADEQ's online bill payment service for the regulated community. No login is required, just your Customer ID and Account ID listed on your paper bill | Learn More > 

You can pay your ADEQ bill online 24/7 with the following:

  • Visa 
  • Discover
  • Mastercard
  • American Express
  • ACH (Electronic Check)

Click to Open Our QuickPay Portal

myDEQ Portal

myDEQ is ADEQ's e-permitting/e-compliance online portal. myDEQ offers an easy online tool, available 24/7, to better assist Arizona's regulated community in meeting their business needs and environmental priorities


Click to Login to myDEQ Portal

Other Online Services and Environmental Tools

Additionally, ADEQ offers the following services: 

  • Vehicle Emissions Testing Exemptions:
    • Out-of-State 
    • Military
  • Drinking Water 
  • Operator Certification 
  • ​Open Burn Permitting
  • SLEIS Portal
  • Facility Air Emissions Inventory Reporting
  • P2 Threshold Calculator


See other online Services

My Community

What environmental issues are in my community?

To better serve the people of Arizona, ADEQ created My Community to provide information about environmental issues, plus actions to address them, in your community.



Environmental data and information by location

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Feedback Tracker

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ADEQ is Hiring

Opportunities to Join Our Team

Get in touch with ADEQ

ADEQ — Phoenix Office


ADEQ - Phoenix
Suite #160
1110 W. Washington St.
Phoenix, AZ 85007


602-771-2300 — General Information
800-234-5677 — Toll-Free

ADEQ — Tucson Office


ADEQ - Tucson
Southern Regional Office (SRO)
Suite #433
400 W. Congress St.
Tucson, AZ 85701


520-628-6733 — General Information
888-271-9302 — Toll-Free