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

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DEQ awards $4,500,000 to Twenty Mile Creek Water Users Association in Boundary County, Idaho

BOISE – The Idaho Department of Environmental Quality (DEQ) today announced the award of a $4,500,000 low-interest drinking water construction loan to the Twenty Mile Creek Water Users Association in …

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DEQ awards $89,505 to two Idaho water systems

April 22, 2026 | News Releases

BOISE — The Idaho Department of Environmental Quality (DEQ) awarded $89,505 to two water systems to help evaluate deficiencies and determine necessary upgrades.

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DEQ awards $1,800,000 to the City of Lewiston

BOISE – The Idaho Department of Environmental Quality (DEQ) today awarded $1,800,000 in low-interest drinking water emerging contaminant construction loan funding to the City of Lewiston in Nez Perce …

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DEQ seeks applications for fiscal year 2027 nonpoint source management grant program 

April 20, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) is seeking grant applications for the fiscal year 2027 federal nonpoint source management § 319 funding cycle. 

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Did You Know?

Some contaminants are regulated under the Safe Drinking Water Act, while others are unregulated. More information on both regulated and unregulated contaminants can be found on DEQ’s Contaminants in Drinking Water page.
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