• High Pollution Advisory in effect
  • DRYWELLS (OR INJECTION WELLS) ARE NOW MANAGED BY EPA. Click to learn more
  • Opt in to receive e-statements/invoices for your environmental permits/registrations instantly to your email inbox
  • Learn ways you can help protect Arizona waters
  • AirArizonaWebBanner_0819.png
  • Pollution Prevention (P2) Planning is going paperless with myDEQ

Our Mission

To protect and enhance public health and the environment.

Learn More

Welcome to ADEQ

New Public Notices

See all
07/02/23 - COMMENT PERIOD ENDS | Renewal of Air Quality Control Permit for Novo Biopower Generating Facility in Navajo County
On July 2, 2023, the public... See Notice
06/02/23 - COMMENT PERIOD BEGINS | Renewal of Air Quality Control Permit for Novo Biopower Generating Facility in Navajo County
On June 2, 2023, the public... See Notice
06/30/23 - EXTENDED | COMMENT PERIOD ENDS | Proposed Arizona Pollutant Discharge Elimination System (AZPDES) Incorporation of Federal Rules
ADEQ is extending the public... See Notice
05/30/23 - EXTENDED | COMMENT PERIOD BEGINS | Proposed Arizona Pollutant Discharge Elimination System (AZPDES) Incorporation of Federal Rules
ADEQ is extending the public... See Notice
06/29/23 - COMMENT PERIOD ENDS | Proposed 401 State Water Quality Certification for Daytona 4 Wash Stabilization in Lake Havasu, Arizona
On June 29, 2023, the public... See Notice
05/30/23 - COMMENT PERIOD BEGINS | Proposed 401 State Water Quality Certification for Daytona 4 Wash Stabilization in Lake Havasu, Arizona
On May 30, 2023, the public... See Notice

New Events | Meetings | Hearings

See all
06/07/23 - WORKSHOP | Wastewater Treatment and Collection: In-Person Operator Certification Training | FLAGSTAFF :

ADEQ invites... See Event Details

06/08/23 - VIRTUAL STAKEHOLDER MEETING | Arizona Aquifer Water Quality Standards Rulemaking :

ADEQ is holding... See Event Details

06/09/23 - PUBLIC MEETING | Notice of Virtual Public Meeting and Possible Executive Session AZOGCC :
... See Event Details
06/14/23 - WORKSHOP | Wastewater Treatment and Collection: In-Person Operator Certification Training | TUCSON :

ADEQ invites... See Event Details

06/15/23 - PUBLIC HEARING | SIP Revision, Modification of Air Quality Control Permit for ASARCO–Hayden in Gila County, and GEP Demo Study :

ADEQ is holding... See Event Details

06/21/23 - WORKSHOP | Wastewater Treatment and Collection: In-Person Operator Certification Training | PHOENIX :

ADEQ invites... See Event Details

07/11/23 - WEBINAR | Waste Determination: When is a waste a hazardous waste? :

... See Event Details