Short entry

Radon in drinking water

We haven’t published a full explainer for Radon yet, so this page only shows what we can stand behind and where to go next.

This page can’t tell you what’s in your tap water.

Only a test of water from your own tap can. Public-system results describe the system, not your home.

4 sources

01Private well guidanceWell Water · asks about your well 02Check your public systemWater Check · system results only 03Search WaterDecoderRelated pages and tools

Reference values

No numeric reference held.

WaterDecoder doesn’t hold a verified reference value for radon in drinking water. That doesn’t mean any level is safe. It means we haven’t verified one to show you.

Is it in my water?

Only a test can tell.

Start with the tool that matches your water source.

Private well → Well WaterAsks about your well Public water → Water CheckSystem results, not your tap · asks for your ZIP

Treatment

No treatment evidence yet.

We don’t hold treatment evidence for Radon yet, so we don’t describe methods or show products on this page.

References

Where these facts come from

Radium Fact Sheet · Water Quality Association (WQA)
Radon & Well Water (wellcare information sheet) · Water Systems Council
Toxicological Profile for Uranium · ATSDR (Agency for Toxic Substances and Disease Registry / CDC)
Toxicological Profile for Radon · ATSDR (Agency for Toxic Substances and Disease Registry / CDC)