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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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01/23/23 - COMMENT PERIOD ENDS | Drinking Water Regulations – Prohibition on Lead Use Rulemaking
On Jan. 23, 2023, the comment... See Notice
12/07/22 - COMMENT PERIOD BEGINS | Drinking Water Regulations – Prohibition on Lead Use Rulemaking
On Dec. 7, 2022, the comment... See Notice
01/06/23 - COMMENT PERIOD ENDS | Proposed Air Quality State Operating Permit Program Revision
On Jan. 6, 2023, the comment... See Notice
12/06/22 - COMMENT PERIOD BEGINS | Proposed Air Quality State Operating Permit Program Revision
On Dec. 7, 2022, the comment... See Notice
01/13/23 - COMMENT PERIOD ENDS | Regional Haze State Implementation Plan (SIP) Revision and Rulemaking
On Jan. 13, 2023, the public... See Notice
12/06/22 - COMMENT PERIOD BEGINS | Regional Haze State Implementation Plan (SIP) Revision and Rulemaking
On Dec. 6, 2022, the public... See Notice

New Events | Meetings | Hearings

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12/12/22 - PUBLIC HEARING | Renewal of AZPDES Permit AZ0026387 for the January Mine Hermosa Project Water Treatment Plant in Santa Cruz County :

ADEQ is holding... See Event Details

12/20/22 - PUBLIC HEARING | Hazardous Waste Fees Rulemaking :

... See Event Details

01/13/23 - PUBLIC HEARING | Regional Haze State Implementation Plan (SIP) Revision and Rulemaking :

ADEQ is holding... See Event Details

02/01/23 - PUBLIC MEETING | Miracle Mile CAB Meeting :

ADEQ is holding... See Event Details

02/24/23 - PUBLIC MEETING | Arizona Regulatory Roadshow: The Bed, Bank & Beyond :

ADEQ is co-... See Event Details