Know Your Environment. Protect Your Health.

Dichloroacetic acid

Dixie Overland Water System

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201813.4 ppb42ND - 26.7 ppb
20190.795 ppb440.600 ppb - 0.990 ppb
20200.955 ppb220.810 ppb - 1.10 ppb
2021ND20ND
2022ND20ND
20231.97 ppb331.40 ppb - 3.10 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
2018-08-0735410655001ND
2018-08-073541065500226.7 ppb
2018-08-0735410655001ND
2018-08-073541065500226.7 ppb
2019-08-15354911770020.990 ppb
2019-08-15354911770010.600 ppb
2019-08-15354911770020.990 ppb
2019-08-15354911770010.600 ppb
2020-08-22355730900010.810 ppb
2020-08-22355730900021.10 ppb
2021-08-1735657776001ND
2021-08-1735657776002ND
2022-08-2535742991001ND
2022-08-2535742991002ND
2023-08-15358222940023.10 ppb
2023-08-25358235090011.40 ppb
2023-08-25358235090021.40 ppb