Radon Testing

We have been trained and are certified by the National Environmental Health Association (NEHA) in testing for radon. We follow all protocols in every test to assure accurate results. Most tests we do are done with an electronic continuous radon monitor. This monitor is rated to do real estate transactions. The monitor takes a sample of the air every hour and gives us an instant result of your radon levels. This test can be completed in as little as 48 hours. This test will give you your Radon measurement in Pico curies per liter (pCi/L). Pico curies is how Radon tests are measured. A Pico curies per liter is defined as a unit of measure used to express the results of radioactivity tests in air and water. For radon gas, one Pico curie per liter is the amount of radon in the air so that 2.2 atoms of radon decay during one minute in one liter of air.(2)

Our continuous radon monitors are calibrated annually and cross checked on a regular basis so we can be sure we are getting reliable data. We carry Sun Nuclear radon equipment for our primary testing.

The duration of tests are categorize by either short term or long term test.  A short term test is any test that is run for less than 90 days.  Long term tests are 90 days or more.  Most of the testing done by our company are considered short term tests. The benefit of a short term test is that information is gathered quickly and can be used for real estate transactions.  If time is not an issue than we recommend a long term test.  We recommend a test that will last a year in order to take into account all of the seasons of the year.   This will give you the most accurate idea of what your overall exposure to radon is.

What to do with Test Results

If the test results are above 4.0 pCi/L, this is considered above the US EPA's action level. At this point mitigation is recommended. Generally speaking any amount of radon carries some risk, even at or below the recommended action level. However the risk of lung cancer increases with the higher long-term average radon levels. So you may want to consider radon mitigation even if you level is below 4.0 pCi/L

These are some more thorough  recommendations from the Minnesota Department of Health.

Test Type 0.75em Recommended Action
Initial Short-term Test
Less than 2
Consider performing a long-term test.
2 to 10
Perform long-term test.
Greater than 10
Perform a second short-term test. Contact MDH before buying second test kit.
Second Short-term Test
Less than 8
Perform long-term test.
8 or greater
Mitigation strongly recommended if first test result was also 4 pCi/L or greater.
Long-term Test
Less than 2
Retest if major changes made to the home.
2 to less than 4
Consider performing mitigation.
4 or greater
Mitigation strongly recommended.


Below you find a map that shows the potential for Radon in Minnesota. This map is only predicted levels of Radon. Your house may contain very low levels or may be above the EPA's action level. Also be aware that tests done in other structures around your house are not indicative of Radon levels in your house..


EPA Map of Minnesota Radon ZonesEPA Map of U.S.A.


      Click for complete image                                      Click for complete image

  Predications of Radon as recommend by the EPA Potential for Radon
  Zone 1 counties have a predicted average indoor radon screening level greater than 4 pCi/L  (pico curies per liter) (red zones) Highest Potential
  Zone 2 counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones) Moderate Potential
  Zone 3 counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones) Low Potential