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

Recent News

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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DEQ seeks representative for Middle Snake Watershed Advisory Group

August 14, 2026 | News Releases

TWIN FALLS – The Idaho Department of Environmental Quality (DEQ) is seeking representatives to fill two vacancies on the Middle Snake Watershed Advisory Group (WAG).

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DEQ seeks representative for Wood River Watershed Advisory Group

August 11, 2026 | News Releases

TWIN FALLS – The Idaho Department of Environmental Quality (DEQ) is seeking a representative to fill a vacancy on the Wood River Watershed Advisory Group (WAG). 

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Avista reducing water releases from Post Falls Dam to minimum required levels

August 7, 2026 | News Releases

SPOKANE, WA –Avista will reduce water releases from Post Falls Dam to the minimum level required under Avista’s federal operating license beginning this week.

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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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