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Short entry

Chlorine dioxide in drinking water

Also listed as Chlorine Dioxide · ClO2

We haven’t published a full explainer for Chlorine dioxide 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.
2 sources
01Private well guidanceWell Water · asks about your well02Check your public systemWater Check · system results only03Search WaterDecoderRelated pages and tools
Reference values

A ceiling on a disinfectant added on purpose.

Disinfectant limit · MRDLFederal · public water systems
0.8 ppm

A ceiling on a disinfectant utilities add on purpose to keep water safe in the pipes.

Applies to
Disinfectant in water a public system delivers
Status
In force
Source
EPA NPDWR MRDL (0.8 mg/L) · 40 CFR §141.65
Your stateNot held yetStates may set their own references. We don’t hold a state reference for chlorine dioxide yet.
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 wellPublic water → Water CheckSystem results, not your tap · asks for your ZIP
Treatment

No treatment evidence yet.

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

References

Where these facts come from

The Water Report

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