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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

San Gabriel County WD

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-01-239588-802-0845ND
2014-01-239588-800-0900ND
2014-01-239588-801-1300ND
2014-01-239588-803-1225ND
2014-04-229588-803-1045ND
2014-04-229588-802-0830ND
2014-04-229588-801-1200ND
2014-04-229588-800-0840ND
2014-07-239588-803-0905ND
2014-07-239588-802-0830ND
2014-07-239588-801-0845ND
2014-07-239588-800-0820ND
2014-10-239588-802-0850ND
2014-10-239588-801-1215ND
2014-10-239588-803-1200ND
2014-10-239588-800-0905ND
2015-01-239588-803-1130ND
2015-01-239588-802-0820ND
2015-01-239588-801-1205ND
2015-01-239588-800-0830ND
2015-04-229588-803-1120ND
2015-04-229588-802-0815ND
2015-04-229588-800-0830ND
2015-04-229588-801-1135ND
2015-07-239588-800-0835ND
2015-07-239588-803-1140ND
2015-07-239588-802-0820ND
2015-07-239588-801-1205ND
2015-10-269588-801-1150ND
2015-10-269588-800-0830ND
2015-10-269588-803-1135ND
2015-10-269588-802-0820ND
2016-01-269588-801-1210ND
2016-01-269588-800-0850ND
2016-01-269588-803-1155ND
2016-01-269588-802-0840ND
2016-04-229588-801-1210ND
2016-04-229588-800-0840ND
2016-04-229588-803-1135ND
2016-04-229588-802-0820ND
2016-07-269588-803-1110ND
2016-07-269588-801-1125ND
2016-07-269588-800-0835ND
2016-07-269588-802-0825ND
2016-10-269588-803-1150ND
2016-10-269588-801-1205ND
2016-10-269588-802-0845ND
2016-10-269588-800-0900ND
2017-01-249588-802-0835ND
2017-01-249588-803-1150ND
2017-01-249588-801-1210ND
2017-01-249588-800-0850ND
2017-04-249588-802-1345ND
2017-04-249588-800-1355ND
2017-04-249588-801-1330ND
2017-04-249588-803-1315ND
2017-07-279588-800-1405ND
2017-07-279588-801-1330ND
2017-07-279588-803-1315ND
2017-07-279588-802-1345ND
2017-10-249588-803-1145ND
2017-10-249588-800-0840ND
2017-10-249588-802-0830ND
2017-10-249588-801-1210ND
2018-01-249588-803-1100ND
2018-01-249588-800-0900ND
2018-01-249588-801-1115ND
2018-01-249588-802-0850ND
2018-04-249588-801-1240ND
2018-04-249588-802-0830ND
2018-04-249588-803-1130ND
2018-04-249588-800-0840ND
2018-07-249588-801-1135ND
2018-07-249588-803-1115ND
2018-07-249588-802-0810ND
2018-07-249588-800-0820ND
2018-10-239588-801-1150ND
2018-10-239588-803-1125ND
2018-10-239588-802-0825ND
2018-10-239588-800-0835ND
2019-01-249588-800-0920ND
2019-01-249588-802-1315ND
2019-01-249588-801-1315ND
2019-01-249588-803-1245ND
2019-04-239588-800-0830ND
2019-04-239588-802-0820ND
2019-04-239588-803-1135ND
2019-04-239588-801-1150ND
2019-07-239588-803-1015ND
2019-07-239588-802-0755ND
2019-07-239588-800-0810ND
2019-07-239588-801-0930ND
2019-10-239588-803-1150ND
2019-10-239588-802-0820ND
2019-10-239588-800-0830ND
2019-10-239588-801-1205ND