Know Your Environment. Protect Your Health.

Trichloroacetic acid

J E S T C

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.650 ppb42ND - 1.30 ppb
20191.30 ppb441.30 ppb
20201.35 ppb221.000 ppb - 1.70 ppb
20210.700 ppb21ND - 1.40 ppb
20220.790 ppb220.780 ppb - 0.800 ppb
20230.300 ppb21ND - 0.600 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
2018-08-21354130580011.30 ppb
2018-08-2135413058002ND
2018-08-21354130580011.30 ppb
2018-08-2135413058002ND
2019-08-20354933370011.30 ppb
2019-08-20354933370021.30 ppb
2019-08-20354933370011.30 ppb
2019-08-20354933370021.30 ppb
2020-08-17355726890011.70 ppb
2020-08-17355726890021.000 ppb
2021-08-17356564240021.40 ppb
2021-08-2435658416001ND
2022-08-01357369710010.780 ppb
2022-08-01357369710020.800 ppb
2023-08-0235818165001ND
2023-08-02358181650020.600 ppb