Radon
Radon is a naturally occurring radioactive gas. Radon may be used in detecting seismic activity, radiography, radiation therapy, and calibrating radon monitoring devices. Radon and its breakdown products emit alpha, beta, and gamma particles that may be harmful to health. In fact, radon is the most significant source of human exposure to radiation. It is readily volatile, thus all routes of exposure (ingestion, inhalation and dermal) are relevant if one is exposed via drinking water. Elevated levels of radon in drinking water may lead to an increased risk of lung cancer due to the potential of radon gas formation. States have widely varying acceptable radon levels (300-10,000 pCi/L), but generally treatment is recommended at levels greater than 10,000 pCi/L.
Health Guideline Level (HGL)
0 ppb
Maximum level that poses minimal health risk based on the latest science
Health Effects
Radon and its breakdown products release high energy particles called alpha, beta, and gamma rays responsible for its health effects. Radon has been associated with genotoxicity and an increased risk of lung cancer based on evidence from epidemiological, occupational, and animal studies.
Affected Organs & Systems:
Common Sources
- Radon is formed by the natural breakdown of uranium and thorium in rocks and soil, and is widespread in the environment. Radon is not typically a concern in surface water but may build up in groundwater. Elevated levels of radon are more likely to occur in drinking water in areas where groundwater flows through granite or granitic sand and gravel.
How to Remove It
Water filters certified under the following NSF standards are effective at removing Radon:
Health Guideline Level
The HGL represents the maximum level that poses minimal health risk based on the latest scientific research. It's often more protective than federal legal limits.
Contaminant Type
Radon is classified as a Radionuclides contaminant.
This contaminant primarily affects the carcinogens.
Check Your Water
Find out if Radon is in your tap water.
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