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

Popular Links

Recent News

DEQ to host Basin Advisory Group Chair meeting for fiscal year 2026 nonpoint source project selection 

November 6, 2025 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) is hosting a Basin Advisory Group Chair meeting to evaluate §319 nonpoint source projects that are eligible for federal funding. 

Read More

DEQ releases 2026 Idaho Pollutant Discharge Elimination System Program Permit Issuance Plan 

November 3, 2025 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) today released the 2026 Idaho Pollutant Discharge Elimination System Program (IPDES) Permit Issuance Plan.

Read More

DEQ awards $150,000 to three Idaho water systems

November 3, 2025 | News Releases, Planning Grant

BOISE – The Idaho Department of Environmental Quality (DEQ) today awarded $150,000 to three water systems to help evaluate deficiencies and determine necessary upgrades.

Read More

DEQ awards $869,000 to Birch Creek Culinary Water Company in Franklin County

October 21, 2025 | News Releases

BOISE – The Idaho Department of Environmental Quality (DEQ) today awarded an $869,000 low-interest drinking water construction loan to the Birch Creek Culinary Water Company in Franklin County, Idaho.

Read More
Visit Our Newsroom

Upcoming Events

View Full Calendar

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: 4.1.8 | last updated: