To protect human health and the
quality of Idaho’s air, land, and water.
DEQ is a state department created by the Idaho Environmental Protection and Health Act to ensure clean air, water, and land in the state and protect Idaho citizens from the adverse health impacts of pollution.
As a regulatory agency, DEQ enforces various state environmental regulations and administers a number of federal environmental protection laws including the Clean Air Act, the Clean Water Act, and the Resource Conservation and Recovery Act.
The agency is committed to working in partnership with local communities, businesses, and citizens to identify and implement cost-effective environmental solutions.
Protecting public health is our top priority. To ensure the safety of all Idahoans, we are committed to responding proactively and providing important resources related to drinking water, wastewater, solid waste, and air quality. We will update this information as it becomes available.
What's New at DEQ?
Recently updated pages on DEQ's website:
- Public Comment Opportunity - Draft NPDES 401 Certification - Idaho Transportation Department District 1 Municipal Separate Storm Sewer System (MS4)
- News Release - DEQ awards drinking water loan to Swan Valley Elementary School
- News Release - DEQ awards drinking water planning grant to city of Hagerman
- Public Comment Opportunity - Draft 401 Certification - USFS Nez Perce - Nevada Creek Culvert
- Public Comment Opportunity - Draft 401 Certification - Bonneville County Public Works - Bridge Replacement
- Public Comment Opportunity - Draft 401 Certification - USFS Nez Perce - White Creek Culvert
- Public Comment Opportunity - Draft 401 Certification - Bonner County East Side Road Improvements
- Public Comment Opportunity - Lolo Creek Tributaries Watershed 2017 Temperature TMDL
- News Release - DEQ prepares IPDES preliminary draft permit for South Fork Coeur d’Alene River Sewer District Mullan Treatment Plant
- Public Comment Opportunity - Draft 401 Certification - Coeur d'Alene Storm Sewer System