What states have the most radon?

Author: Fern Hagenes  |  Last update: Saturday, November 20, 2021

Here are the 10 states with the highest Radon levels:
  • Alaska (10.7)
  • South Dakota (9.6)
  • Pennsylvania (8.6)
  • Ohio (7.8)
  • Washington (7.5)
  • Montana (7.4)
  • Kentucky (7.4)
  • Idaho (7.3)

Where is radon The most common?

It sometimes gets concentrated in homes built on soil with natural uranium deposits. It can enter buildings through cracks in floors or walls, construction joints, or gaps in foundations around pipes, wires or pumps. Radon levels are usually highest in the basement or crawl space.

Where in the US is the risk of radon exposure highest?

Here are the 10 US States with the highest average Radon levels: Alaska (10.7) South Dakota (9.6) Pennsylvania (8.6)

What is the major source of radon in houses in the United States?

The main source of indoor radon is radon gas infiltration from soil into buildings. Rock and soil produce radon gas. Building materials, the water supply, and natural gas can all be sources of radon in the home.

What houses are more likely to have radon?

No particular style of home is more likely to have a radon problem; including old homes, new homes, drafty homes, insulated homes, homes with basements, or homes without basements.


Do all basements have radon?

Basements aren't the only place you can find radon. This is a common assumption since radon is most commonly found in basements. Unfortunately, it's also very wrong. Radon gas can be found anywhere in any home, not just in the basement.

Does opening windows reduce radon?

Opening windows improves air circulation and ventilation, helping move radon out of the house and mixing radon-free outside air with indoor air. Make sure all your basement windows are open. ... Opening basement windows helps reduce negative air pressure, diluting radon with clean outdoor air.

Is it OK to live in a house with radon?

The EPA states, “Radon is a health hazard with a simple solution.” Once radon reduction measures are in place, home buyers need not worry about the quality of the air in the home. ... Since removing radon is relatively simple, your family will be safe in a home with a radon reduction system in place.

Should I walk away from a house with radon?

"You should definitely take it seriously but you really don't need to walk away from the home. It's actually pretty easy to remove radon, and it's not that expensive," Consumer Reports Home Editor Paul Hope said. Home inspections often include testing for radon - using short term kits.

How do I make my house safe from radon?

There are two types of mitigation that can be used to make a home safe from radon gas. These include the installation of a radon sump or a positive pressure unit. Radon sumps are the most popular and effective choice for reducing high concentrated levels of radon.

Is there radon in NYC?

Around one in 15 homes in the country has elevated levels of radon, but it's much less common in New York City: Just 4 percent of residences are estimated to have indoor radon levels higher than 4 pCi/L, according to the state Department of Health.

Is there radon in Florida?

Radon problems are found throughout Florida and no area is immune to it. The Department of Health does provide zip code based statistics of radon levels in buildings in Florida. You may visit our Radon Data by Zip Code page, to view information on radon testing results for other zip codes.

Does Florida have radon?

In Florida, one in five homes tested has elevated radon levels above the action level of 4 pCi/L. Elevated radon levels have been found in all types of buildings, including manufactured homes, schools and high-rise condominiums. ... The only way to know the radon levels in your home is to test.

Is radon common in Chicago?

Radon can be high in Chicago! It's true that there is a higher prevalence of elevated radon in the surrounding towns and counties. However, just because the suburbs are higher doesn't mean that Chicago homes are immune to dangerous levels of radon.

What type of soil has the most radon?

Granitic type soils present higher levels of radon gas. Non-granitic soils have traditionally been considered to have very low radon levels.

Can air filters remove radon?

Yes, air purifiers help with radon gas reduction to some extent. The air purifiers with activated carbon filter technology are highly effective in trapping radon gas.

Is high radon a deal breaker?

You can't see it, smell it, or taste it, but radon gas is a leading cause of lung cancer, according to the National Cancer Institute. However, the presence of radon in your home doesn't have to be a deal breaker.

Does every house have radon gas?

The simple answer is “yes” – at least trace levels of radon will exist in every home. ... That will mean an old home, new home, drafty home, well insulated home and homes with and without basements. If any part of your foundation is in direct contact with the soil, it has the potential of having elevated levels.

Can you finish a basement with radon?

Many homeowners with a finished basement are concerned about the radon mitigation process, and although some of the options as to where the system can be installed may be limited, it is still very possible to install a mitigation system in a finished basement.

How do you eliminate radon?

Active subslab suction — also called subslab depressurization — is the most common and usually the most reliable radon reduction method. One or more suction pipes are inserted through the floor slab into the crushed rock or soil underneath. They also may be inserted below the concrete slab from outside the home.

Does radon travel upstairs?

Radon is known to be a heavy gas. ... Please understand that the radon level can be significantly higher on an upper floor. Even if the radon level is lower on the first floor than say a basement radon level, it could be higher on the second floor. The only way to know is if you test.

How long does it take for radon to dissipate?

Generally speaking, it only takes one to three days to remove the radon from your home, and then it will need to be tested again. If levels are below the recommended threshold of 0.4 pCi/L, a radon mitigation system can be installed to prevent more radon from coming into your home.

What time of year is radon highest?

The reason that radon levels in the home can be higher in the summer and winter is two-fold. During the winter, the air in your home tends to be much warmer than the outside air, and this temperature difference creates a vacuum within your home.

Do plants reduce radon?

Radon (222Rn) is a natural radioactive gas and the major radioactive contributor to human exposure. The present effective ways to control Rn contamination are ventilation and adsorption with activated carbon. Plants are believed to be negligible in reducing airborne Rn.

Does rain make radon worse?

Wind and rain storms create the largest variables of radon levels when testing for radon gas. Rainier days tend to result in noticeably higher radon levels. This is because rainy days are often coupled with lower barometric pressure.

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