5.
Testing by landlords.
A landlord or other person acting on behalf of a landlord may conduct a test required to be performed under this section on a residential building that, at a minimum, does not include an elevator shaft, an unsealed utility chase or open pathway, a forced hot air or central air system or private well water unless the water has been tested for radon by a person registered under Title 22, chapter 165 and the results show a radon level acceptable to the Department of Health and Human Services, or on a building otherwise defined in rules adopted by the Department of Health and Human Services. A test or testing equipment used as permitted under this subsection must conform to any protocols identified in rules adopted by the Department of Health and Human Services.