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Originally Posted by CateP
Curious about this arsenic and radon issue..... Just a little skeptical of a natural condition that has existed for centuries in this area suddenly being a health risk and requiring we all buy products to fix.
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It's all a matter of relative risk. A century ago, other things got you first or masked any problem developing from radon exposure. Then, too, is the fact that most houses older than 10-20 years typically leak air like a sieve, and the resulting dilution of any radon seeping up from the ground through the basement keeps the exposure risk down.
Radon in ground water is a different matter, though, as heating the water reduces the solubility of any gas in it and releasing it into the air, as when taking a shower. Radon content of well water not a problem everywhere, and exposure time from showering is very low anyway, but radon content is something easily measured if you want peace of mind. You can draw your own sample and take to the state lab in Concord, to keep cost down. Their web site has information on sampling technique and analysis cost.