What is considered a very high level of radon?

Radon levels are measured in picocuries per liter, or pCi/L. Levels of 4 pCi/L or higher are considered hazardous. Even in houses with extremely high radon levels, you can expect a drop to levels considered safe.

What is a bad level of radon?

There is no safe level of radon. The World Health Organization says that your home should be under 2.7 pCi/L. The EPA states that owners of homes with levels above 2.0 pCi/L should consider having a radon system installed to lower the levels.

What is the normal state of radon?

In the United States, the average indoor radon level is about 1.3 pCi/L, according to the EPA. The average outdoor level is about 0.4 pCi/L. The U.S. Surgeon General and EPA recommend fixing homes with radon levels at or above 4 pCi/L.

What is a radon affected area?

The house is in a radon ‘affected area’ – what does this mean? The Health Protection Agency (now part of Public Health England) has used available data to produce a set of maps indicating the areas of the country where it is estimated that the greatest number of properties will be affected by radon.

What are signs of radon poisoning?

Possible symptoms include shortness of breath (difficulty breathing), a new or worsening cough, pain or tightness in the chest, hoarseness, or trouble swallowing. If you smoke and you know you’ve been exposed to high levels of radon, it’s very important to quit smoking.

Where is radon the highest?

Radon levels are usually higher in basements, cellars and living spaces in contact with the ground. However, considerable radon concentration can also be found above the ground floor.

How do you eliminate radon?

There’s no single method that fits all radon removal system needs. Common techniques include: Sub-slab depressurization, where suction pipes are inserted through the floor or concrete slab into the concrete slab below the home. A radon vent fan then draws out the radon gas and releases it into the air outside.

Do air purifiers reduce radon?

Air Purifiers are great for mold, dust, allergies, bacteria and viruses, and odors, but many people do not know that they can also help with toxins, gases and chemicals such as radon. The most important type of air filter to reduce radon levels is an activated carbon filter.

Is 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.

What are the radon risk zones in California?

Map of Radon Zones in California based on Environmental Protection Agency (EPA) data. Back to Radon Zones in the United States. Radon zones. Zone 3 (28 counties) Zone 2 (33 counties) Zone 1 (7 counties) Highest Potential: counties have a predicted average indoor radon screening level greater than 4 pCi/L (pico curies per liter) (red zones)

How to find radon levels by County and ZIP code?

The map enables you to zoom in and out and to find average measured radon levels by county and zip code. Clicking on a county will bring up additional options for locating measurement and mitigation professionals as well as providing access to the measurement data for a specific county by zip code.

What’s the average radon level in a house?

Moderate Potential: counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones) Low Potential: counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)

When was the map of radon zones created?

The Map of Radon Zones was developed in 1993 to identify areas of the U.S. with the potential for elevated indoor radon levels. The map is intended to help governments and other organizations target risk reduction activities and resources. The Map of Radon Zones should not be used to determine if individual homes need to be tested.