Know Your Environment. Protect Your Health.

Trichloroacetic acid

Sterling, City of

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.570 ppb110.570 ppb
20190.650 ppb110.650 ppb
20200.790 ppb110.790 ppb
20210.810 ppb110.810 ppb
2022ND10ND
20231.20 ppb111.20 ppb

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
2018-08-2110301000.570 ppb
2019-08-2012273270.650 ppb
2020-08-1114857490.790 ppb
2021-08-3119384440.810 ppb
2022-08-302346003ND
2023-08-2125612311.20 ppb