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

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DEQ Finalizes IPDES Multi-Sector General Permit (MSGP) for Industrial Stormwater Discharges

April 2, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) finalized the Idaho Pollutant Discharge Elimination System (IPDES) Multi-Sector General Permit (MSGP) for stormwater discharges associated w…

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DEQ awards $1,501,280 to the City of Lewiston

BOISE – The Idaho Department of Environmental Quality (DEQ) today awarded $1,501,280 in low-interest wastewater emerging contaminant construction loan funding to the City of Lewiston in Nez Perce Coun…

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DEQ seeks representatives for Potlatch River Watershed Advisory Group

March 23, 2026 | News Releases

LEWISTON – The Idaho Department of Environmental Quality (DEQ) is seeking representatives to fill six vacancies on the Potlatch River Watershed Advisory Group (WAG).

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DEQ seeks representative for Wood River Watershed Advisory Group

March 17, 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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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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