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Announcement Icon Public drinking water and wastewater systems can now apply for DEQ funds to assist with facility planning projects and building or repairing infrastructure. Letters of Interest (LOIs) are due January 8, 2027. Learn more Close
We protect human health and the quality of Idaho's air, land, and water.

Recent News

DEQ releases 2027 Idaho Pollutant Discharge Elimination System Permit Issuance Plan

October 30, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) today released the 2027 Idaho Pollutant Discharge Elimination System Program (IPDES) Permit Issuance Plan.

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DEQ awards $1,400,000 to the City of Island Park

October 19, 2026 | Construction Grant, News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) today awarded $1,400,000 in low-interest drinking water lead service line loan funding to the City of Island Park in Fremont County, Idaho.

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DEQ to host open house on draft 401 water quality certification for Caldera Flats project

October 19, 2026 | News Releases

ISLAND PARK – The Idaho Department of Environmental Quality (DEQ) invites the public to attend an open house focused on DEQ’s draft 401 water quality certification for the Caldera Flats project.

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DEQ awards $38,600 to Cedar Springs Community Water in Bonner County, Idaho

September 28, 2026 | Construction Grant, News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) today announced the award of a $38,600 low-interest drinking water loan to Cedar Springs Community Water in Bonner County, Idaho.

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Did You Know?

An EPA identification number is a unique number assigned to sites that allows states and EPA to track activities regulated under the Resource Conservation and Recovery Act. Learn how to obtain an EPA identification number in Idaho on DEQ’s website.
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