National Environmental Health Association NEHA National Radon Radongas Form

How to Interpret results of the radon test QualitySafety levelRadon Level in pCi/LExcellentSafe radon levels0 - 1.3 pCi/LGood1.3 - 2.7 pCi/LFairAcceptable radon levels2.7 - 4.0 pCi/LPoorDangerous radon levels> 4.0 pCi/L Oct 9, 2023 Radon levels: What do they mean? - Airthings Airthings https://.airthings.com › resources › radon-levels Airthings https://.airthings.com › resources › radon-levels

Test your home or school again if there are major remodeling or changes to the HVAC system. Any home, school or building can have high-levels of radon, including new and old homes, well-sealed and drafty homes, and homes with or without basements.

Every building contains radon but the levels are usually low. In some parts of the country homes may have higher levels, and the chances of a higher level depend on the type of ground. For instance, levels may be higher in parts of the country rich in granite, such as Dartmoor in Devon and Cornwall.

EPA recommends homes be fixed if the radon level is 4 pCi/L (picocuries per liter) or more. Because there is no known safe level of exposure to radon, EPA also recommends that Americans consider fixing their home for radon levels between 2 pCi/L and 4 pCi/L. What is EPA's Action Level for Radon and What Does it Mean? | US EPA epa.gov https://.epa.gov › radon › what-epas-action-level-ra... epa.gov https://.epa.gov › radon › what-epas-action-level-ra...

Radon levels are measured in picocuries per liter, or pCi/L. Levels of 4 pCi/L or higher are considered hazardous. Radon levels less than 4 pCi/L still pose a risk and in many cases can be reduced, although it is difficult to reduce levels below 2 pCi/L.

You can't see, smell or taste radon gas. Even if you are breathing in a high level of radon, there are no obvious signs. Instead exposure to high levels of radon over time puts you at risk of developing lung cancer, and it is these symptoms that we often call signs of radon poisoning.

What Are the Symptoms of Radon Exposure? You won't have symptoms of radon poisoning right away. Instead, health problems from the exposure, such as lung cancer, show up after many years. Lung cancer may start as a nagging cough, shortness of breath, or wheezing that doesn't go away.

Alaska has the highest radon levels in the US with 10.7 pCi/L. The state's geological composition, including uranium-rich rock formations and extensive granite deposits, contributes to the elevated radon levels.

However, EPA believes that any radon exposure carries some risk—no level of radon is safe. Even radon levels below 4 pCi/L pose some risk, and you can reduce your risk of lung cancer by lowering your radon level.

1. Alaska: 10.7 pCi/L. Because radon is emitted from material like rock, soil, and water, Alaska's glaciers, crisp waters, and fertile volcanic soil make it the perfect breeding ground for radon.

A radon level of 10 pCi/L is the equivalent of your family: Smoking a pack of cigarettes per day. Receiving 500 chest X-rays per year. What Level of Radon is Safe? American Radon Mitigation https://americanradonmitigation.com › what-level-of-r... American Radon Mitigation https://americanradonmitigation.com › what-level-of-r...