Delaware Radon Program Approves InterNACHI's Radon Certification Course

The Delaware Division of Public Health Radon Program lists Certified Radon Testers on their website.

To become certified, take InterNACHI’s free, online “Advanced Radon Measurement Service Provide Course,” which is NRPP- and AARST-approved for both initial certification and Continuing Education.

For details on becoming a Certified Radon Tester in Delaware, visit and scroll down the page to the Radon Tester section.