• HPA Ozone Maricopa County 041919
  • Pollution Prevention (P2) Planning is going paperless with myDEQ
  • Military and Out-of-State Exemptions for Vehicle Emissions Tests Are Now Online
  • Learn About Financial Assistance Opportunities with Expanded Eligibility for the Underground Storage Tank Preapproval Program & Time-Barred Claims Program
  • Click Here for a How-to Video About Registering for the Operator Certification Exam
  • Didn't Pass the Emissions Test...Don't pass this up!
  • Program Provides Reimbursement for Certain Tank Site Improvements

Our Mission

To protect and enhance public health and the environment.

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Welcome to ADEQ

New Public Notices

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04/17/19 - COMMENT PERIOD BEGINS | Preliminary Decision to Issue a Significant Amendment to an APP for Freeport-McMoRan Bagdad Mine
On Wednesday, April 17, 2019... See Notice
05/17/19 - COMMENT PERIOD ENDS | Preliminary Decision to Issue a Significant Amendment to an APP for Freeport-McMoRan Bagdad Mine
On May 17, 2019, the public... See Notice
05/16/19 - PUBLIC MEETING | Park-Euclid / 7th Street and Arizona Avenue / Stone and Grant CAB Meeting
ADEQ is holding this... See Notice
05/17/19 - COMMENT PERIOD ENDS | Proposed Leaking UST Case Closure for File 4190.01 in Tucson, Ariz.
On May 17, 2019, the public... See Notice
04/17/19 - COMMENT PERIOD BEGINS | Proposed Leaking UST Case Closure for File 4190.01 in Tucson, Ariz.
On Wednesday, April 17, 2019... See Notice
05/20/19 - COMMENT PERIOD ENDS | Proposed Fiscal Year 2020 Master Priority List
On Monday, May 20, 2019, the... See Notice

New Events | Meetings | Hearings

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03/28/19 - PUBLIC HEARING | Triennial Review: Proposed Surface Water Quality Rules :

ADEQ welcomes... See Event Details

04/01/19 - PUBLIC MEETING | Regional Haze Stakeholder Meeting :

This meeting... See Event Details

04/05/19 - PUBLIC MEETING | Proposed Reissuance of Multi-Sector General Permit (MSGP) for Stormwater Discharges Associated with Industrial Activities :

ADEQ is... See Event Details

04/09/19 - PUBLIC MEETING | CGP Re-issuance Stakeholder Meeting :

This meeting is... See Event Details

04/09/19 - PUBLIC MEETING | On-site Wastewater Advisory Committee (OWAC) :
... See Event Details
04/12/19 - PUBLIC HEARING | Notice of OGCC Public Hearing :
... See Event Details
04/12/19 - PUBLIC MEETING | Notice of Public Meeting and Possible Executive Session OGCC :
... See Event Details
04/17/19 - PUBLIC EVENT | Regional Solid/Hazardous Waste and P2 Programs Workshop in Tucson, Ariz. :
... See Event Details