KES Radon, a locally owned and operated business, is the best choice for radon mitigation and radon testing services across Colorado.  

Radon Risk

The Radon risk is easily overlooked. Did you know a radon level of 1.0 pCi/L is equal to smoking the equivalent of 2.5 cigarettes a day, and that radon is the #2 cause of lung cancer in America, only smoking is #1! The World Health Organization recommended radon action level is 2.7 pCi/L. The EPA actually recommends that you consider fixing your home if the levels in your house range between 2.0 and 4.0 pCi/L and informs to definitely fix your home if your levels exceed 4.0 pCi/L.  


Tom Kabis, owner and operator of KES Radon, is a 43-year veteran of the Environmental Science Profession. He holds several undergraduate degrees in earth sciences and a Master of Science degree in Environmental Science. He came out of retirement to re-open KES Radon after moving to Colorado five years ago and learning that many of the RADON mitigation and testing companies operating here in Colorado are testing improperly and furthermore installing RADON mitigation systems improperly. In short, of the several hundred mitigation systems he has inspected, less than 20% are installed properly and even less are operating optimally. Stephen Sewalk, manager and operator of KES Radon, is a 30-year veteran of Earth Sciences and Engineering, and holds a MS and PhD in Civil/Environmental/Energy Engineering with experience in building construction and as professor of real estate and construction. Together, their goal is to help you keep your family safe. We will inspect an existing system at no charge and meet with you to discuss testing and mitigating radon for your home. It is critical that you keep your family safe. Having lost family members to smoking and radon we decided to take action and build this company for your benefit. 


Why is Radon Testing and Mitigation in Colorado Important?

Radon comes from the natural radioactive breakdown of uranium in soil, rock, and water. It is an invisible, odorless, tasteless, cancer-causing gas that enters buildings through the numerous cracks, holes, and pipes in the foundation. It can also enter a building from well water.

Radon can be found in any building, but homes are the most concerning since that’s where families spend the most time.

Approximately 50 percent of homes in Colorado have elevated radon levels.

The U.S. Environmental Protection Agency (EPA) has worked with state and federal geologists to develop maps which predict the potential indoor radon levels for every county in the United States. Those counties with the highest potential are designated as Zone 1 and colored in Red; those with the lowest as Zone 3. 


Colorado specifically, among other states, has dangerously high levels of radon which can affect health. Although no level of exposure to radon is safe, the higher the concentrations and longer an individual is exposed to the gas, the more likely that health problems can occur. In the United States, radon gas is the 2nd leading cause of lung cancer and is responsible for 21,000 deaths per year. Both the EPA and the Surgeon General state the only way to find the radon levels within the home is to have it tested. You cannot rely on the results of your next-door neighbors when they tested. The levels can vary by a large amount even from homes right next to each other. General maps are available that show whether a home is in a high-risk area; unfortunately, Colorado is labeled in red in almost all counties.


Radon Levels in Colorado Counties

El Paso County


  The average national indoor radon level is 1.3 pCi/L.
The average indoor radon levels of El Paso County, as determined by radon test results from Air Chek, Inc, is 4.9 pCi/L. 

Douglas County


The average indoor radon levels of Douglas County, as determined by radon test results from Air Chek, Inc, is 4 pCi/L. 

Elbert County


The average indoor radon levels of Elbert County, as determined by radon test results from Air Chek, Inc, is 3.9 pCi/L.

Fremont County


The average indoor radon levels of Fremont County, as determined by radon test results from Air Chek, Inc, is 6.2 pCi/L.

Teller County


  The average indoor radon levels of Teller County, as determined by radon test results from Air Chek, Inc, is 11.8 pCi/L.

Pueblo County


The average indoor radon levels of Pueblo County, as determined by radon test results from Air Chek, Inc, is 8.9 pCi/L.

There is no known safe level of exposure to radon. EPA strongly recommends that you fix your home if your test shows 4 picocuries (pCi/L) or more. If your test shows between 2 and 4 pCi/L, consider fixing.

Our Services

Many RADON testing companies will arrive to your home and enter with fancy electronic RADON detectors, set them up for 24-48 hours, then read-out the numbers on the gauge and tell you what it says.  Most all of those technicians have absolutely no idea how or what the detector does and what the numbers actually mean.  They will tell you they are "Certified" by a great sounding "Certification Organization" but the truth is, they may have spent between 20 and 40 hours in a classroom, passed a written examination and have very little experience; but, they are given a fancy patch, a fancy certificate, and in most cases, a uniform to make them look professional. In addition, the so-called Certification Organizations are merely private corporations who have set themselves up as self-styled "Certification Venues".  Their self-interest is in cycling as many people through their private certification classes as possible to make as much profit as possible.  There is absolutely ZERO interest or inducement for these private certification companies to oversee their "Certified Technicians" and ensure they are performing their job correctly, and there is absolutely no process used to suspend the certification of any technician who does a poor job or his/her job incorrectly.

Is that what you want to base the safety of your health on?

The US EPA and nearly all independent laboratories have clearly expressed and demonstrated that the plethora of electronic instrumentation is cumbersome, requires frequent and intensive calibration (which is rarely if ever done), and can become out of calibration by merely bumping the device.  More than that, the US EPA recommends an averaging test done over a 7-day period.  Companies using an electronic gauge will mostly only test 48-hours; not long enough to get an ACCURATE reading of your RADON problem.


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