Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dichloroacetic acid

Rubio Canon Land & Water Association

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.

MORE ABOUT THIS CONTAMINANT

 

48

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
2016ND80ND
20170.175 ppb81ND - 1.40 ppb
2018ND80ND
20190.488 ppb82ND - 2.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-063761-801-0815ND
2014-01-063761-800-0840ND
2014-04-073761-801-0831ND
2014-04-073761-800-0855ND
2014-07-073761-801-0730ND
2014-07-073761-800-0820ND
2014-10-063761-801-0735ND
2014-10-063761-800-0815ND
2015-01-053761-800-0815ND
2015-01-053761-801-0740ND
2015-04-063761-800-0845ND
2015-04-063761-801-0800ND
2015-07-133761-800-0755ND
2015-07-133761-801-0735ND
2015-10-053761-800-0900ND
2015-10-053761-801-0815ND
2016-01-043761-800-0820ND
2016-01-043761-801-0735ND
2016-04-043761-800-0805ND
2016-04-043761-801-0730ND
2016-07-053761-800-0855ND
2016-07-053761-801-0735ND
2016-10-033761-800-0820ND
2016-10-033761-801-0735ND
2017-01-033761-801-0735ND
2017-01-033761-800-0845ND
2017-04-033761-801-07451.40 ppb
2017-04-033761-800-0850ND
2017-07-053761-801-0810ND
2017-07-053761-800-0925ND
2017-10-103761-801-0755ND
2017-10-103761-800-0925ND
2018-01-023761-800-0925ND
2018-01-023761-801-0730ND
2018-04-023761-800-0850ND
2018-04-023761-801-0835ND
2018-07-023761-801-0830ND
2018-07-023761-800-0950ND
2018-10-083761-801-0806ND
2018-10-083761-800-0850ND
2019-01-083761-801-0925ND
2019-01-083761-800-1028ND
2019-04-013761-801-10132.00 ppb
2019-04-013761-800-11431.90 ppb
2019-07-013761-801-0842ND
2019-07-013761-800-0958ND
2019-10-073761-801-0953ND
2019-10-073761-800-1031ND