Know Your Environment. Protect Your Health.

Dichloroacetic acid

Tal Tex

Dichloroacetic 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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20185.58 ppb443.10 ppb - 11.2 ppb
20199.60 ppb445.10 ppb - 13.6 ppb
20205.20 ppb334.10 ppb - 6.90 ppb
20214.78 ppb442.90 ppb - 7.70 ppb
20221.48 ppb42ND - 3.20 ppb
20230.375 ppb41ND - 1.50 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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
2018-02-06AE124913.50 ppb
2018-05-07AE253483.10 ppb
2018-08-21AE378644.50 ppb
2018-11-20AE4666411.2 ppb
2019-01-24AE5124513.6 ppb
2019-04-30AE641047.40 ppb
2019-07-01AE7283212.3 ppb
2019-12-02AE908125.10 ppb
2020-02-24AE995114.10 ppb
2020-04-06AF056626.90 ppb
2020-07-08AF186054.60 ppb
2021-02-24AF441573.30 ppb
2021-04-13AF499562.90 ppb
2021-08-09AF651987.70 ppb
2021-10-20AF741565.20 ppb
2022-03-17AF895502.70 ppb
2022-05-12AF967253.20 ppb
2022-09-09AG12261ND
2022-10-19AG17624ND
2023-02-16AG29323ND
2023-04-27AG38435ND
2023-09-18AG56599ND
2023-11-06AG623761.50 ppb