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We protect human health and the quality of Idaho's air, land, and water.

Recent News

DEQ seeks member for Clearwater Basin Advisory Group

September 17, 2026 | News Releases

LEWISTON – The Idaho Department of Environmental Quality (DEQ) is seeking a representative to fill a vacancy on the Clearwater Basin Advisory Group (BAG).

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Proper septic system operation and maintenance protect human health and Idaho’s water quality

September 14, 2026 | News Releases

BOISE – Many Idaho households that are not served by public sewers rely on septic systems to treat and dispose of wastewater. Proper operation and maintenance help protect public health, drinking wate…

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DEQ releases 2026 Triennial Review of Idaho Water Quality Standards

September 9, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) released the 2026 Triennial Review of Idaho Water Quality Standards. The review will guide water quality standards rulemaking and subprogram…

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DEQ to hold public meeting to collect comments on draft 401 water quality certification for Felt Hydroelectric Project

August 24, 2026 | News Releases

DRIGGS – The Idaho Department of Environmental Quality (DEQ) will hold a public meeting to receive comments on the draft Clean Water Act (CWA) Section 401 Water Quality Certification for the Felt Hydr…

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Did You Know?

Hazardous waste generators are classified by the amount of hazardous waste generated in a calendar month. See DEQ’s Generator Size Categories page for classification information.
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