• 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
  • Search ADEQ Databases online

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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03/20/19 - COMMENT PERIOD BEGINS | Preliminary Decision to Issue a State Water Quality Certification of a Federal Action
On Wednesday, March 20, 2019... See Notice
04/19/19 - COMMENT PERIOD ENDS | Preliminary Decision to Issue a State Water Quality Certification of a Federal Action
On April 19, 2019, the public... See Notice
03/13/19 - COMMENT PERIOD BEGINS | Proposal to Issue Air Quality Control Renewal Permit No. 75283 to Nucor Steel Kingman LLC
On March 13, 2019, the public... See Notice
04/11/19 - COMMENT PERIOD ENDS | Proposal to Issue Air Quality Control Renewal Permit No. 75283 to Nucor Steel Kingman LLC
On April 11, 2019, the public... See Notice
04/08/19 - COMMENT PERIOD ENDS | Proposed Leaking UST Case Closure for File 2735.01-.03 in Sedona, Ariz.
On April 8, 2019, the public... See Notice
03/08/19 - COMMENT PERIOD BEGINS | Proposed Leaking UST Case Closure for File 2735.01-.03 in Sedona, Ariz.
On Friday, March 8, 2019, the... See Notice

New Events | Meetings | Hearings

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03/27/19 - PUBLIC HEARING | Proposed Revision to Arizona State Implementation Plan: Demonstration of a Significant Emission Rate for Ammonia :

ADEQ welcomes... See Event Details

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

ADEQ welcomes... See Event Details

04/17/19 - PUBLIC EVENT | Regional Solid/Hazardous Waste and P2 Programs Workshop in Tucson, Ariz. :
... See Event Details
04/22/19 - PUBLIC MEETING | East Central Phoenix WQARF Sites CAB Meeting :
... See Event Details
04/30/19 - WORKSHOP | Safe Drinking Water Rule Review :

ADEQ is holding... See Event Details

05/21/19 - WORKSHOP | FREE Training for Owners and Operators of UST Systems :

ADEQ is offering... See Event Details

05/22/19 - WORKSHOP | FREE Training for Owners and Operators of UST Systems :

ADEQ is offering... See Event Details

05/23/19 - WORKSHOP | FREE Training for Owners and Operators of UST Systems :

ADEQ is offering... See Event Details