Know Your Environment. Protect Your Health.

Dichloroacetic acid

Georgetown Water Department

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
20200.820 ppb21ND - 1.64 ppb
20211.02 ppb111.02 ppb
2022ND10ND
20233.80 ppb223.71 ppb - 3.89 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
2018-06-25S792529ND
2018-07-02S808304ND
2019-08-22S848499ND
2019-08-22S848501ND
2020-06-22S969602ND
2020-06-22S9696041.64 ppb
2021-11-12S11484551.02 ppb
2022-09-16S1230817ND
2023-09-13S12876823.71 ppb
2023-09-13S12876933.89 ppb