Total Trihalomethanes (TTHMs) in Drinking Water
What you need to know about total trihalomethanes (tthms) in your tap water.
EPA Limit (MCL)
80 ppb
EPA Goal (MCLG)
N/A ppb
Category
Disinfection Byproducts
Health Effects
Liver, kidney, nervous system problems; increased cancer risk
Common Sources
Byproduct of drinking water disinfection
How to Remove Total Trihalomethanes (TTHMs) from Water
Recommended filtration methods: Activated carbon filters