Trichloroacetic Acid (TCA)
Member of haloacetic acids (HAAs) that form as byproducts when chlorine reacts with organic matter
Health Guideline Level (HGL)
0.0001 ppb
Maximum level that poses minimal health risk based on the latest science
Health Effects
Health protective benchmarks for TCA in drinking water have been developed based on liver toxicity and carcinogenicity observed in animal studies. EPA has classified TCA as a possible human carcinogen. Developmental toxicity has also been associated with exposure to TCA based on evidence from animal studies.
Affected Organs & Systems:
Common Sources
- Chlorine disinfection interacting with naturally occurring organic matter in distribution systems
- Levels usually higher in surface water than groundwater
- Industrial release or natural chlorination of organic matter
How to Remove It
Water filters certified under the following NSF standards are effective at removing Trichloroacetic Acid (TCA):
Health Guideline Level
The HGL 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
Trichloroacetic Acid (TCA) is classified as a Disinfection Byproducts contaminant.
This contaminant primarily affects the developmental, carcinogens, and other systems.
Check Your Water
Find out if Trichloroacetic Acid (TCA) is in your tap water.
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