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

Recent News

DEQ prepares IPDES preliminary draft permit for Stibnite Gold Project worker housing facility

May 19, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) is releasing an Idaho Pollutant Discharge Elimination System (IPDES) preliminary draft permit for preliminary review to Perpetua Resources I…

Read More

DEQ seeks members for Southwest Basin Advisory Group

May 18, 2026 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) is seeking multiple representatives to fill vacancies on the Southwest Basin Advisory Group (BAG).

Read More

DEQ awards $40,527,566 to the City of Sandpoint, Bonner County

BOISE – The Idaho Department of Environmental Quality (DEQ) today announced the award of a $38,000,000 low-interest wastewater construction loan and $2,527,566 in Legislative Supplemental Funding to t…

Read More

Wyoming, Idaho, and Utah Departments of Environmental Quality announce results of 2021 Tri-State Bear Survey

May 8, 2026 | News Releases

CHEYENNE, Wyo. — The Wyoming, Idaho, and Utah Departments of Environmental Quality have announced the results of the 2021 Tri-State Bear Survey (TBS), a water quality assessment of perennial streams a…

Read More

Did You Know?

Labs certified to perform drinking water analyses in Idaho are managed by the Idaho Bureau of Laboratories (IBL) and available here: List of certified labs. These labs meet EPA standards for water quality testing. More information can be found on DEQ’s Contaminants in Drinking Water page.
ver: 4.1.9 | last updated: