Radon in Well Water: Should You Test?
Why it matters
Radon is a radioactive gas that can dissolve into groundwater from uranium-bearing rock. When you shower or run water, radon moves into the air you breathe. Most of the risk is from breathing it.
Who should test
UMass Amherst Extension says radon gas and gross alpha are the testing priorities for bedrock wells. There is no federal standard for radon in private wells; ask your state for its suggested action level.
Treatment
Aeration systems remove radon from water before it reaches the house. Granular activated carbon can also be used for lower levels. Test indoor air for radon too.
Sources
- UMass Amherst: Radon in private drinking water wells
- EPA RadTown: Natural radionuclides in private wells
Questions
Does a radon water test also check uranium?
No. Radon, uranium and radium need separate tests.
Free well water safety checklist
15 family-friendly steps based on CDC and EPA guidance. Print it, keep it on the fridge, and know when to call a certified lab.
More guides
- Flood Protection for Well Owners: Before, During and After a FloodRaise and seal the wellhead, know your pump shutoff, then disinfect and test with a certified lab after any flood.
- PFAS “Forever Chemicals” in Private Wells: Why You Should TestFederal PFAS rules protect public water systems — not private wells. Here’s what “forever chemicals” mean for well owners and how to get tested.
- Nitrates in Well Water and Blue Baby Syndrome: Who Must TestNitrate in well water can cause blue baby syndrome in infants. Learn who is at risk, when to test, and how to find a certified lab.
- Arsenic in Private Well Water: The Invisible Risk UndergroundArsenic in groundwater is often naturally occurring and invisible. USGS research shows millions of private-well users may be above the EPA drinking-water standard.