Know Your Environment. Protect Your Health.

Trichloroacetic acid

Arlington Waterworks

Trichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

12

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.300 ppb220.260 ppb - 0.340 ppb
2019ND20ND
2020ND20ND
2021ND20ND
20220.185 ppb21ND - 0.370 ppb
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to reproduction and child development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-09-0610790860.340 ppb
2018-09-2010849050.260 ppb
2019-09-051146182ND
2019-09-121148218ND
2020-09-301219249ND
2020-09-301219248ND
2021-09-091276882ND
2021-09-091276881ND
2022-09-151336816ND
2022-09-1513368170.370 ppb
2023-09-20CB11602-01ND
2023-09-20CB11602-02ND