Know Your Environment. Protect Your Health.

Dichloroacetic acid

Eastern Washington University

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0656 ppb161ND - 1.05 ppb
20191.50 ppb1210ND - 2.42 ppb
2020N/A00N/A
20210.688 ppb83ND - 2.91 ppb
2022ND40ND
20230.630 ppb42ND - 1.44 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
2018-03-14ND
2018-03-14ND
2018-03-14ND
2018-03-14ND
2018-05-09ND
2018-05-09ND
2018-05-09ND
2018-05-09ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-11-13ND
2018-11-13ND
2018-11-131.05 ppb
2018-11-13ND
2019-05-281.68 ppb
2019-05-281.72 ppb
2019-05-281.67 ppb
2019-05-281.99 ppb
2019-08-061.82 ppb
2019-08-06ND
2019-08-061.65 ppb
2019-08-061.37 ppb
2019-11-122.42 ppb
2019-11-121.99 ppb
2019-11-12ND
2019-11-121.65 ppb
2021-02-084097353ND
2021-02-0840973492.91 ppb
2021-02-084097347ND
2021-02-084097351ND
2021-08-1741599221.13 ppb
2021-08-174159921ND
2021-08-1741599201.46 ppb
2021-08-174159923ND
2022-03-214261618ND
2022-03-214261616ND
2022-03-214261617ND
2022-03-224261615ND
2023-02-134424721ND
2023-02-134424722ND
2023-02-1344247201.08 ppb
2023-02-1344247231.44 ppb