How to Collect a Radon in Water Sample

Radon in water poses both an inhalation risk and an ingestion risk. Research has shown that your lung cancer risk from breathing radon in air is much larger than your risk of stomach cancer from swallowing radon in water. Most of your risk from radon in water comes from radon released into the air when water is used for showering and other household purposes.

Radon in water is not usually a problem when your home's source is surface water. A radon in water problem is more likely when its source is ground water, e.g. a private well or a public water supply system that uses ground water. You should use our WT-100 radon water kit if your water comes from a well.

Collecting a Radon in Water Sample
One method of collecting a radon water sample is to slowly fill a bowl or deep pan. Submerge the radon water collection vial and cap open side up until they fill. While the radon water sample vial is still submerged, screw the cap of the vial back on. The radon water sample should not contain any air bubbles or have any headspace. The radon water sample collection vial does not contain a preservative. If there are any air bubbles in the radon water sample, collect the sample again. Return the radon water sample to be received by the laboratory within four days.

Interpreting Your Radon in Water Test Results
There are no regulations or standards for radon in water for private wells. EPA has established a maximum contaminate level (MCL) for radon in water in municipal water supplies. Radon in municipal water can not exceed either 300 pCi/l or 4000 pCi/l depending on several other factors. For private wells you should consider mitigating your radon in water if your level is over 4000 pCi/l. You should definitely mitigate your radon in water if your level is over 10,000 pCi/l.

How Do I Fix My Radon in Water Problem
There are basically two ways to remove radon from water:
  1. Granular Activated Carbon (GAC) - Use GAC to remove radon in water if your radon in water level is 10,000 pCi/l or less.
  2. Aeration System - Use an aeration system to remove radon in water if your radon in water level is over 10,000 pCi/l.

Whichever system you choose to remove radon in water, it will have to be installed by a qualified mitigation contractor.

To get more help choosing the right radon test kits for your home use our Radon Testing Wizard . Or if you know which test you need you can go directly to the order page.



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