Radon in water
Can radon get into well water?
Radon dissolved in groundwater is released into indoor air every time you shower or run a tap. Shield bedrock wells are the risk case.
How you notice it
- No water symptoms — found by testing water and indoor air
- Elevated indoor radon already measured
- Drilled well in granite or Precambrian shield
Why it happens
Uranium decay in crystalline bedrock produces radon gas, which dissolves readily into groundwater held in fractures.
The fix
- Test radon-in-water alongside indoor air
- Bubble aeration at the point of entry is the accepted fix
- Granular activated carbon only for low concentrations
Equipment that solves it
Recommendations are generated from Canadian regional well records. Links are affiliate links — we may earn a commission at no extra cost to you.
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US Water Systems Radon-in-Water Aeration System
Bubble aeration to strip radon before it reaches indoor air. Shield bedrock wells only.
$120 USD/yr consumables · premium
Shop this stageFrequently asked questions
Can radon get into well water?
Radon dissolved in groundwater is released into indoor air every time you shower or run a tap. Shield bedrock wells are the risk case. Uranium decay in crystalline bedrock produces radon gas, which dissolves readily into groundwater held in fractures.
How do I know if I have radon in water?
Common signs include: No water symptoms — found by testing water and indoor air; Elevated indoor radon already measured; Drilled well in granite or Precambrian shield. Confirm with an accredited lab before buying treatment gear.
What is the fix for radon in water?
Test radon-in-water alongside indoor air Bubble aeration at the point of entry is the accepted fix Granular activated carbon only for low concentrations
Should I treat the whole house or just drinking water?
Staining, scale, and bacteria risks are usually whole-home issues. Taste, dissolved solids, and some metals can be finished at a kitchen RO tap after the main train is correct.
How do I match this problem to my municipality?
Open the provincial directory and the municipality page if one is published. This guide does not list places from a hardness or depth model.
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