Radon Testing
Wednesday, May 16, 2018 8:50 AM

Earlier this week, KARE11 aired an investigative story about radon in schools. Radon is an odorless, colorless gas that can cause significant health problems. According to the EPA, the gas is produced by the natural breakdown of uranium in soil, rock and water and gets into the air we breathe. Radon can be found all over the U.S. in any type of building — homes, offices, and schools — and result in a high indoor radon level.

To keep our students and staff safe, MPS initiated a radon testing program in 2017. Six schools tested in 2017 all had levels below the EPA Action Level. The EPA requires action to be taken when radon levels are above 4 pCi/L. While there is no safe level of radon exposure, the average indoor radon level is estimated to be about 1.3 pCi/L, and about 0.4 pCi/L of radon is normally found in the outside air.

Previously, MPS buildings were tested in 1996. Our plan is to test 15 schools per year, and have a 5-year rotation for retesting. In Minnesota, it is best to perform radon testing between November 1 and March 31 and samples are set up to run for 90 days.

For more information on radon testing in Minneapolis Public Schools, please read these frequently asked questions.