“In Idaho, Blaine County requires radon mitigation systems to be installed on all new residential structures. During this reporting cycle, the county received approximately 90 building permits for new residential construction projects.”
Overview of EPA’s State & Tribal Indoor Radon Grants Program: A Focus on Activities Conducted During 2022, published in February 2023, notes this as an accomplishment. (https://www.epa.gov/system/files/documents/2023-02/2022%20Annual%20SIRG%20Activities%20Report.pdf)
The checklist for a building permit application online at https://co.blaine.id.us/DocumentCenter/View/13055/Building-Permit-Checklist.
Checklist to Complete a Building Permit Application” includes the statement:
“A RADON MITIGATION SYSTEM is required per Blaine County Code for all new residential structures.”
Blaine County includes a radon requirement in its Final Inspection Checklist for Certificate of Occupancy at https://www.co.blaine.id.us/DocumentCenter/View/11682/Final-Inspection-Checklist. It states:
“Radon mitigation for living quarters and provide copy of test results with 3.9 or less.”
The Idaho Department of Health and Welfare also encourages radon resistant new construction through its website at https://healthandwelfare.idaho.gov/health-wellness/environmental-health/radon. It states: “Incorporating radon reduction techniques into the construction of your new home is the most cost-effective way to reduce the radon levels in your home. Discuss radon reduction techniques with your builder.”
United States