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Radon Testing

Have you tested your home for radon? Testing is the only way to know if you and your family are at risk from radon!

Radon is a radioactive gas that you can’t see, smell, or taste.  It may be a problem in your home. Radon is estimated to cause many thousands of deaths each year.  It comes from the natural decay of uranium that is found in nearly all soils. It typically moves up through the ground and into your home through cracks, gaps, and other holes in the foundation.  Any home may have a radon problem. This means new and old homes, well-sealed and drafty homes, and homes with or without basements.

Radon is found all over the United States.  It can get into any type of building – homes, offices, and schools.  The risk to you and your family is greatest from your home because that is where people spend the most time.  Approximately 1 out of every 15 homes has high levels of radon.

Testing for radon is easy and inexpensive.  The tests are simple to do, just open the card-sized package, place the test in your home (windows closed) for 2 days, and send the kit and packaging to the specified lab for reading.  Your results usually take about 2-3 weeks.

If your results indicate a level of 4pCi/L or higher, it’s recommended that you perform another short term test or a long term (90 day) follow-up test for radon. Radon levels can vary over time, so an initial high level doesn’t necessarily indicate a problem.  A 90 day test can more accurately measure average radon levels.

Sealing the cracks and openings hasn’t show to be effective in reducing radon levels.  The EPA strongly recommends installing a vent pipe system that pulls radon up from under your home and out through your roof.  The cost for installing a system and sealing your home ranges from $800-$2500, depending on the size and condition of your home.  Many newer homes are already equipped with radon reduction features, but every new home should be tested for radon, even if it was built to be radon resistant.

The longer you wait, the more your risk of radon exposure increases.  Not just you, but also those of your family, your pets, and anyone visiting your home.

Radon gas decays into radioactive particles that can get trapped in your lungs when you breathe.  Over the course of your lifetime, this can lead to lung cancer. Not everyone who has been exposed to radon will develop lung cancer.  The risk depends upon:

  1. The level of radon in your home.
  2. The amount of time you spend in your home.
  3. Whether or not you smoke.


The Surgeon General has warned that radon is the 2nd leading cause of lung cancer.  Smoking is the first.

 If your home has high levels of radon and you smoke, your risk of developing lung cancer is especially high!

Environmental Protection Agency (EPA) approved test kits for radon are available from the Clark County Health Department for $6 each. You can pick them up, or they can be mailed to you for an additional $3.00.  Please contact the Clark County Health Department at 715-743-5105 to obtain a radon test kit.

For more information, check out the following website: and see our Radon Brochure


Clark County Courthouse
Hours:  8 a.m. to 4:30 p.m.
517 Court St., Room 301
Neillsville, WI 54456
Phone: (715) 743-5148
Fax: (715) 743-5154