Radon gas can dissolve and accumulate in water from underground sources such as wells. When water that contains radon is used in the home for showering, washing dishes, and cooking, radon gas escapes from the water and goes into the air. It is similar to carbonated soda drinks where carbon dioxide is dissolved in the soda and is released when you open the bottle. Some radon also stays in the water. Radon is not a concern in water that comes from lakes, rivers, and reservoirs, because the radon is released into the air before it ever arrives at your tap. Additional information on radon in drinking is available at http://water.epa.gov/lawsregs/rulesregs/sdwa/radon/regulations.cfm.
How is radon in my drinking water released into the air?
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