Radon Zone Information : Country Radon Breakdown

united states zone 1 radon map

Radon Zone 1 Highest Radon Potential

  • Highest Potential : Indoor radon levels greater than 4pCi/L
  • Moderate Potential : Indoor radon levels between 2pCi/L and 4pCi/L
  • Lowest Potential : Indoor radon levels less than 2pCi/L
  • Zone 1 States : states
radon test kits

Radon Test Kits

Despite what zone your state is located in on the map, testing your home is the only way to make sure that you are safe from radon gas. Testing your home for radon gas is very easy and getting test kits come with quick turn around time for your test results. We highly suggest everyone test on a yearly basis and in some areas depending on your geological soil you may benefit more from an actual radon monitor or testing on a monthly basis.

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Get a quote from a qualified radon specialist

If you have tested your home already and you need to speak to a qualified radon specialist fill out our free no obligation price quote now to find out about a radon mitigation system installation in your home or business. SWAT Environmental is the largest radon mitigation company in the United States and we are here to serve you.

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What you should know about radon around you

United States Radon Map

United States Radon Levels

The majority of the United States has moderate to high indoor radon levels. The greatest risk of radon exposure comes in the northern and eastern regions of the country where in most areas the indoor radon level exceeds that of the EPA 4.0pCi/L safe level and puts those states that reside in those areas in the zone 1 category of indoor radon levels. That doesn't mean that all homes in the area are above that level, but tests show those areas have potentially higher risk for indoor radon gas exposure.

Most of the south west region of the United States show radon levels tend to show moderate indoor levels or zone 2 and the south eastern counties were tested at lower safer levels or zone 3. However, this does not mean your area or home is safe from radon gas. Radon is everywhere and it can be greater in areas as close as your neighbor. What does that mean for you? No matter where you live in the United States and what your zone levels are projected by maps and county data doesn't mean that you are completely in the free and clear. The fact remains that the only safe way to really know that you are in a safe zone and your family is safe from the dangers of radon gas is to get a radon test and test your home or business. It also is known that radon can fluctuate over time so testing your home every year or more is one of your best options to make sure you are not being exposed to dangerous levels of radon gas.

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Radon Gas?

Radon is produced by the breakdown of uranium in the soil. It can't be seen, smelled, or tasted and has been proven to cause lung cancer from exposure over a extended periods of time. Radon is an invasive gas that penetrates your homes slab, crawlspace, or basement areas through cracks and imperfections in your homes structure. Radon is everywhere even in the outdoor air, but when it can collect in your home it can be very dangerous.

United States radon and soil

The United States has a wide variety of different geological soil conditions with the majority of the rocky and mountainous areas aiding the production of radon gas. Radon is usually found in igneous, hydrothermal, and sedimentary geological environments. These areas can be host to dangerous levels of radon gas as well as seasonal variations in the indoor radon levels due to weather, seasonal condition changes, and elevation.

*the map above is not 100% accurate as there are many factors for what radon levels actually are in every area, This map should only be used as a reference to the areas and what the areas average indoor radon levels may be. No matter what your radon level can only be determined by an actual radon test administered by or ordered from a professional radon testing facility.

Radon Test Results