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

Recent News

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?

You can access hazardous waste, Idaho Pollutant Discharge Elimination System (IPDES), air quality, and storm water compliance information through EPA’s website, Enforcement and Compliance History Online (ECHO). Compliance information, including reuse, can also be accessed by submitting a public records request to DEQ.
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