What is the Highest Radon Level Found in a Home?

Radon levels can vary greatly among buildings. The World Health Organization recommends a reference level of 300 Bq/m3, while the Canadian government suggests a level of less than 30 Bq/m3. what is the highest radon level is produced by the radioactive decay of the element radium, which was discovered by Pierre Curie in 1898. The unstable nature of this element forces it to either release all of its atomic energy, or a small amount, and decays to produce radon.

How to Use a Radon Tester?

As a result, the highest level of radon was recently found in a newly built home in Center Valley, Pennsylvania. The reading was more than 1,500 times the recommended limit set by the U.S. Environmental Protection Agency (EPA). The DEP won’t disclose the exact location of the home, but the family temporarily left their home to get a radon mitigation system installed. After a year, the house’s radon level had decreased to under four picocuries/L.

The rate of air exchange between a building and its surroundings depends on the construction of the building, ventilation habits of the occupants, and the air-tightness of the building. Radon can enter a building through cracks in the walls, floor-wall junctions, and gaps around pipes. A home’s air pressure changes largely due to three main components: warm air rises and cool air falls, and make-up air enters the lower portion of the house.

The EPA recommends mitigation when the radon concentration in a home reaches 4 pCi/L or higher. However, the amount found in a home may be even higher, requiring mitigation. If the EPA’s recommended level is too high, it will cause the occupants to have to suffer through a weakened immune system. The World Health Organization recommends a reduction in radon levels in the home.

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