Protect your health. Test your home.



What is Radon Gas?

Radon is a colorless and odorless natural radioactive gas that is produced by the breakdown of uranium in the earth's crust.

  • Radon is the number one cause of lung cancer in non smokers, second only to the number of lung cancer incidents from cigarette smoking
  • If you are a smoker, you are at much greater risk from Radon induced lung cancer
  • Radon is a Class A carcinogen
  • There are no symptoms of radon exposure
  • You can't see, smell or taste radon
  • Alpha radiation is released as the Radon Gas decays
  • Radon is not known to cause any other health problems or symptoms
  • Radon is estimated to cause over 20,000 lung cancer deaths per year
  • Approximately 50 US lives are needlessly lost each day, (please test for radon)
  • You cannot estimate radon levels based upon the homes age, location, design or test results from a neighbor's home.

1 in 5 Missouri homes are estimated to have radon

1 out of every 3 homes in Missouri is estimated to have elevated radon levels

Radon is formed by the natural radioactive decay of uranium in rock, soil, and water. Naturally existing, low levels of uranium occur widely in Earth's crust. It can be found in all 50 states. Once produced, radon moves through the ground to the air above. Some remains below the surface and dissolves in water that collects and flows under the ground's surface.


Radon is considered a low level dose of radiation, where harm may occur over long exposure periods. Radon gas is likely to account for the greatest amount of radiation exposure, (55%), in a typical person's lifetime, followed by CAT scans, (11%).

Radon Pie Chart Radiation Levels


The first step to help ensure the safety of you and your family’s health and safety is to have your home tested for radon. At St. Louis Radon, our professional testers deploy the latest in computerized electronic real-time radon monitoring technology to provide you with a comprehensive report, including a complete visual graph of radon level data points as recorded over a 48-hour sampling period.

Learn More About Testing


If testing indicates levels of radon that require action, our team of engineers and technicians will design and install a custom radon mitigation system to safely and effectively redirect radon and other soil gasses out of your home. We also take additional measures to seal and close other possible breaches in the foundation that could let soil gasses into the through cracks or drain tiles systems.

Learn More About Mitigation

New Construction

With new home construction projects, it is crucial to determine the level of radon that may be present in the soil before the home is built. It’s also critical to have the new home retested for potential radon concentrations immediately following occupancy. We also highly recommend installing an Active Dampness Control System (ADC) with every new build.

Learn More About New Construction