Radon Laws and Rules - EH: Minnesota Department of Health -

Radon Laws, Rules and Standards

The Minnesota Radon Licensing Act (Minnesota Statutes 144.4961) was passed by the legislature and signed into law in May 2015. This act gives Minnesota Department of Health (MDH) the authority to write rules and enforce laws related to the radon industry in the state.

Professionals and companies that measure for radon, mitigate for radon or perform radon analysis in the State of Minnesota will be required to be licensed and use system tags.

On December 28, 2018, a Ramsey County District Court judge issued an order in an on-going lawsuit filed against the Minnesota Department of Health (MDH). That order, in effect, prevents MDH from enforcing certain radon mitigation statutes and rules that were scheduled to become effective on January 1 of 2019. Under the order, MDH for the time being cannot regulate or enforce the statutes and rules that apply to radon mitigation professionals that conduct mitigation in residences. Until further order of the Court, MDH must comply with the order. Other parts of the radon statutes and rules are not affected by the Court’s order. The radon measurement aspects of the statute and rules remain unchanged. If you are conducting radon measurement in a building you do not own or lease, you need to have a radon professional license. For more information, see the statement ‘Radon Licensure Changes due to Temporary Injunction’.


144.4961 Minnesota Radon Licensing Act


4620.7000 Purpose
4620.7050 Applicability
4620.7100 Definitions
4620.7200 Radon Measurement Professional License
4620.7250 Radon Mitigation Company License
4620.7300 Radon Mitigation Professional License
4620.7350 Radon Analysis Laboratory License
4620.7400 Standards of Conduct
4620.7500 Incorporation by Reference; Required Work Practices for Radon Measurement and Mitigation and Measurement Devices
4620.7600 Radon System Tag Requirements
4620.7700 Approval of Initial Training and Continuing Education Courses
4620.7800 Reporting Requirements
4620.7900 Inspections and Enforcement
4620.7950 Variance to Radon Licensing Rules


Protocol for Conducting Measurements of Radon and Radon Decay Products in Homes
Protocol for Conducting Measurements of Radon and Radon Decay Products in MultiFamily Buildings

Protocol for Conducting Measurements of Radon and Radon Decay Products in Schools and Large Buildings

Updated Wednesday, 20-Nov-2019 10:10:33 CST