Know Your Environment. Protect Your Health.

Dichloroacetic acid

Colby Waterworks

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.740 ppb110.740 ppb
20190.690 ppb110.690 ppb
20200.840 ppb110.840 ppb
20210.700 ppb110.700 ppb
20220.660 ppb110.660 ppb
20230.310 ppb110.310 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
2018-09-1110794960.740 ppb
2019-09-1811492960.690 ppb
2020-07-2912035450.840 ppb
2021-09-1412778640.700 ppb
2022-09-1413364200.660 ppb
2023-07-25CB08520-020.310 ppb