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

Recent News

DEQ issues boil water advisory for private well owners around Big Springs Ave — Island Park

July 1, 2026 | News Releases

ISLAND PARK – The Idaho Department of Environmental Quality (DEQ) is issuing a boil water advisory for private well owners around Big Springs Avenue in Island Park, Idaho.

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DEQ prepares IPDES preliminary draft permit for Brundage Mountain Resort Advanced Wastewater Treatment Plant

July 1, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) is releasing an Idaho Pollution Discharge Elimination System (IPDES) preliminary draft permit to the Brundage Mountain Resort Advanced Waste…

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DEQ awards $860,000 to the City of Arco

June 26, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) today awarded $860,000 in low-interest drinking water lead service line loan funding to the City of Arco in Butte County, Idaho.

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DEQ seeks member for Clearwater Basin Advisory Group

June 23, 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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Did You Know?

Disposal of business waste, including spent solvents, sumps, electronics, and more, may be subject to local, state, and federal requirements. See DEQ’s Common Business Waste web page for specific disposal requirements.
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