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Call: 1-307-777-7937

Open Hours: Mon - Fri 8:00 am - 5:00 pm

Spill/Complaint: 1-307-777-7501

Main #: 1-307-777-7937

Spill Call: 1-307-777-7501

Sunrise over Theodore Roosevelt National Park, North Dakota

Wyoming Department
of Environmental Quality

Dramatic Sunrise at Devils Tower National Monument – Wyoming

Panoramic view of Grand Tetons national mountain range

An autumn landscape scene in Jackson Hole, Wyoming, including an

Wyoming Department of Environmental Quality

Wyoming Department
of Environmental Quality

To protect, conserve and enhance the quality of Wyoming’s environment for the benefit of current and future generations.

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DEQ's Mission

To protect, conserve and enhance the quality of Wyoming’s environment
for the benefit of current and future generations.

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Water and Waste Advisory Board Meeting: Revisions to Water Quality Rules, Chapter 1, Wyoming Surface Water Quality Standards; and Chapter 2, Permit Regulations for Discharges to Wyoming Surface Waters.

Municipality and County Government Diesel Equipment Replacement Grant

DEQ Divisions

May 7, 2024

DEQ’ State of the Environment Podcast, Episode 2, Just Released

DEQ

Cheyenne – The Wyoming Department of Environmental Quality State has released a new episode of its State of the Environment podcast. The podcast’s episodes cover topics related to the agency and its work to help listeners be more aware of the work the DEQ and its seven Divisions provide for Wyoming. This month features the...

May 7, 2024

The Wyoming Department of Environmental Quality – Air Quality Division issues Oil and Gas Emergency Rulemaking.

Uncategorized

Cheyenne – The Wyoming Department of Environmental Quality (DEQ) – Air Quality Division (AQD) has issued an emergency rule in response to the Environmental Protection Agency’s (EPA) new air regulation 40 CFR Part 60 subpart OOOOb. EPA’s OOOOb rules – “Standards of Performance for Crude Oil and Natural Gas Facilities for Which Construction,...

April 22, 2024

Wyoming DEQ Water Quality Division Announces Proposed Revisions to Wyoming Surface Water Quality Standards

DEQ

Cheyenne – On April 11, 2024, the Wyoming Department of Environmental Quality (WDEQ) Water Quality Division (WQD) released proposed revisions to Wyoming Water Quality Rules, Chapter 1, Wyoming Surface Water Quality Standards, and corresponding changes to Chapter 2, Permit Regulations for Discharges to Wyoming Surface Waters. The standards specify water quality protections for...

April 18, 2024

Public Notice: Informational Webinar Regarding Proposed Revisions to Water Quality Rules, Chapter 1 and Chapter 2

Water Quality

The Water Quality Division will host an informational webinar on Tuesday, April 30, 2024, from 10 AM to 11:30 AM to provide an overview and answer questions related to proposed revisions to Water Quality Rules, Chapter 1, Wyoming Surface Water Quality Standards, and Chapter 2, Permit Regulations for Discharges to Wyoming Surface Waters....