Chloroform
Member of trihalomethanes (THMs) that form in water treated with chlorine and is generally the most abundant THM formed in drinking water
EPA MCLG Level
0.221 ppb
Maximum level that poses minimal health risk based on the latest science
Health Effects
Health protective benchmarks for chloroform have been developed based on kidney and liver carcinogenicity observed in animal studies, and liver toxicity observed in occupational studies. The EPA classifies chloroform as a probable human carcinogen based on animal evidence, and there is additional epidemiological evidence that may increase the risk of colon and bladder cancer in humans. Results from animal studies also suggest that exposure to chloroform can cause liver, developmental and immune toxicity. Acute exposure to low levels of chloroform will cause nervous system toxicity.
Affected Organs & Systems:
Common Sources
- Chlorine disinfection interacting with naturally occurring organic matter in distribution systems
- Levels usually higher in surface water than groundwater
- Released into the environment from chemical manufacturing plants, pulp and paper mills, waste incinerators and wastewater treatment plants
How to Remove It
Water filters certified under the following NSF standards are effective at removing Chloroform:
EPA MCLG Level
The EPA MCLG represents the maximum level that poses minimal health risk based on the latest scientific research. It's often more protective than federal legal limits.
Contaminant Type
Chloroform is classified as a Disinfection Byproducts contaminant.
This contaminant primarily affects the developmental, kidneys, and other systems.
Check Your Water
Find out if Chloroform is in your tap water.
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