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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

San Fernando 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.

MORE ABOUT THIS CONTAMINANT

 

96

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0688 ppb161ND - 1.10 ppb
20150.263 ppb163ND - 1.90 ppb
20160.0875 ppb161ND - 1.40 ppb
20170.150 ppb162ND - 1.30 ppb
20180.0875 ppb161ND - 1.40 ppb
20190.581 ppb166ND - 2.30 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
2014-01-159590-802-0940ND
2014-01-159590-800-1020ND
2014-01-159590-801-1035ND
2014-01-159590-803-1000ND
2014-04-309590-803-1000ND
2014-04-309590-802-0940ND
2014-04-309590-801-1040ND
2014-04-309590-800-1020ND
2014-07-119590-803-1030ND
2014-07-119590-802-1010ND
2014-07-119590-801-1115ND
2014-07-119590-800-1050ND
2014-10-079590-802-0930ND
2014-10-079590-801-1045ND
2014-10-079590-803-1000ND
2014-10-079590-800-10151.10 ppb
2015-01-219590-803-1050ND
2015-01-219590-802-1030ND
2015-01-219590-801-1130ND
2015-01-219590-800-1110ND
2015-05-139590-803-1000ND
2015-05-139590-802-0940ND
2015-05-139590-800-10201.10 ppb
2015-05-139590-801-1035ND
2015-08-129590-800-10501.90 ppb
2015-08-129590-803-1025ND
2015-08-129590-802-1000ND
2015-08-129590-801-1110ND
2015-10-299590-801-1030ND
2015-10-299590-800-10101.20 ppb
2015-10-299590-803-0955ND
2015-10-299590-802-0930ND
2016-02-249590-801-1110ND
2016-02-249590-800-1040ND
2016-02-249590-803-1010ND
2016-02-249590-802-0940ND
2016-04-209590-801-1016ND
2016-04-209590-800-1000ND
2016-04-209590-803-0937ND
2016-04-209590-802-0918ND
2016-07-159590-803-1020ND
2016-07-159590-801-1105ND
2016-07-159590-800-10401.40 ppb
2016-07-159590-802-0955ND
2016-10-139590-803-1040ND
2016-10-139590-801-0815ND
2016-10-139590-802-0845ND
2016-10-139590-800-1015ND
2017-01-139590-802-0920ND
2017-01-139590-803-0945ND
2017-01-139590-801-1045ND
2017-01-139590-800-1015ND
2017-04-129590-802-0930ND
2017-04-129590-800-10151.30 ppb
2017-04-129590-801-1050ND
2017-04-129590-803-0955ND
2017-07-129590-800-1100ND
2017-07-129590-801-1120ND
2017-07-129590-803-1035ND
2017-07-129590-802-1012ND
2017-10-119590-803-1020ND
2017-10-119590-800-10501.10 ppb
2017-10-119590-802-1000ND
2017-10-119590-801-1110ND
2018-01-179590-803-1000ND
2018-01-179590-800-1020ND
2018-01-179590-801-1040ND
2018-01-179590-802-1110ND
2018-04-189590-801-1105ND
2018-04-189590-802-0950ND
2018-04-189590-803-1015ND
2018-04-189590-800-1045ND
2018-07-179590-801-1035ND
2018-07-179590-803-0955ND
2018-07-179590-802-0920ND
2018-07-179590-800-10101.40 ppb
2018-10-179590-801-1248ND
2018-10-179590-803-1157ND
2018-10-179590-802-1118ND
2018-10-179590-800-1228ND
2019-01-169590-800-0845ND
2019-01-169590-802-0920ND
2019-01-169590-801-0825ND
2019-01-169590-803-0900ND
2019-04-189590-800-10451.40 ppb
2019-04-189590-802-0955ND
2019-04-189590-803-1020ND
2019-04-189590-801-1100ND
2019-08-159590-803-1020ND
2019-08-159590-802-0955ND
2019-08-159590-800-10401.20 ppb
2019-08-159590-801-1100ND
2019-10-159590-803-09301.40 ppb
2019-10-159590-802-09001.40 ppb
2019-10-159590-800-10002.30 ppb
2019-10-159590-801-10451.60 ppb