Chlorine in Drinking Water
EPA Limit (MCL)
4000 ug/L
EPA Goal (MCLG)
4000 ug/L
Status
Regulated
Health Effects
Chlorine itself is relatively safe at regulated levels, but it creates disinfection byproducts (trihalomethanes, haloacetic acids) that are linked to cancer. It can also cause eye and nose irritation and stomach discomfort.
How Chlorine Gets Into Water
Intentionally added by water utilities to kill bacteria and viruses. It is the most common water disinfectant in the US and is essential for preventing waterborne disease.
How to Remove Chlorine
Activated carbon filters (including basic pitcher and faucet filters) easily remove chlorine taste and odor. This is one of the easiest contaminants to filter out.
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