St. Louis County  |  O’Fallon  |  Saint Charles  |  St. Louis City


Radon Testing in St. Louis, MO

Radon Testing St. Louis

Radon, a colorless, odorless, and tasteless radioactive gas, is the second-leading cause of lung cancer in the United States. As the naturally occurring element uranium decays into a gas, it transforms into radon and can then enter homes or buildings through the ground. Prolonged inhalation of radon releases bursts of radiation that cause significant damage to the lungs.

The best way to accurately detect radon levels is through professional and thorough testing. Our highly trained and certified Radon Inspection Specialists at Proper Environmental perform Continuous Radon Monitor (CRM) tests throughout the greater St. Louis area. The CRM technology we utilize is the industry’s best and can provide reliable results in as little as 48 hours. Schedule an appointment with one of our specialists today.

The Radon Testing Process

Our hassle-free radon Continuous Radon Monitor (CRM) testing process includes three steps:

  1. Appointment: A Proper Environmental Certified Radon Technician will visit your home or business at your earliest convenience and set up the CRM. The initial meeting typically lasts only 10 minutes.
  2. Radon Test Drop-Off: The Radon Technician determines the best spot for the CRM placement according to EPA standards. They will inform you about best practices around your home or commercial building to ensure accurate test results. 
  3. Report/Follow Up: The Radon Technician will return approximately 48 hours later to collect the CRM. A detailed report will be sent to you the same business day.

What to Do If There Are High Levels of Radon in Your Home 

If the CRM detects high radon levels in your home or business (4.0 pCi/L or higher), we recommend installing a mitigation system. If you decide to move forward, we’ll create and implement a customized radon mitigation system to lower the levels swiftly. We offer financing options for those who want to protect their families and businesses as soon as possible.

We additionally provide HUD multi-family radon testing and mitigation processes for apartment complexes. The HUD policy also requires professional testing and mitigation systems for every building. Our goal is to ensure safe indoor air quality in all homes.

Why Professional Radon Testing?

Do-It-Yourself Kits

At Proper Environmental, we also offer do-it-yourself charcoal radon test kits to perform at home or work. Each kit contains one sampler to place in a central room on the lowest level of your home or commercial building. Expose the sampler for at least 48 hours (2 days) and no more than 168 hours (7 days).

When testing yourself, you must follow the instructions for appropriate Closed House Conditions:

  • All exterior doors and windows, except the main entry and exit, must remain closed for 12 hours before testing
  • Keep all exterior doors and windows closed throughout the test period, except the main entrance and exit
  • Use dehumidifiers, heating, and cooling systems normally
    Avoid using vent or exhaust fans
  • Don’t test during severe weather

After the testing, submit your sampler to the lab address on your instruction sheet. Standard reporting lasts 3-5 business days, and results arrive via email or fax. Those who don’t provide an email address or fax number must wait six weeks for mailed results. It’s also important to note that lab-generated reports aren’t as detailed as professional results.

Choosing Professional Radon Testing

At-home kits produce unreliable and inconsistent results, while professional testing provides trusted and accurate data. Certified technicians such as our Proper Environmental specialists complete rigorous training, proctored exams, and licensing before they can test for radon. Additionally, our tools and equipment provide relevant details about your radon levels throughout the testing period, whereas at-home kits only produce an average.

Furthermore, you’ll know the results as soon as the test finishes. There’s no need to wait for a lab to provide inconsistent data. Our St. Louis radon testing services include advice and recommendations on the next steps, whether you may need mitigation or another solution.

Schedule an Appointment With Our Radon Measurement Professionals

Our radon measurement professionals at Proper Environmental are highly trained and certified, giving you peace of mind that the service you receive is accurate and trustworthy. We serve families and companies throughout the St. Louis area, including St. Charles, Florissant, St. Peters, Imperial, Wentzville, O’Fallon, Chesterfield, Maryland Heights, Ballwin, and many more cities. We’re proud members of National Radon Defense and other renowned industry organizations. Contact us today for a free estimate and to schedule an appointment with one of our Radon Measurement Professionals!