Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dichloroacetic acid

Davidson Water Inc.

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

192

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201412.2 ppb32325.90 ppb - 21.0 ppb
201518.7 ppb32327.40 ppb - 32.0 ppb
201616.5 ppb32326.40 ppb - 31.0 ppb
201719.3 ppb323216.0 ppb - 26.0 ppb
201816.4 ppb323211.0 ppb - 24.0 ppb
201914.9 ppb32328.00 ppb - 25.0 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
2014-02-03777937T8.50 ppb
2014-02-03777938T12.1 ppb
2014-02-03777939T10.8 ppb
2014-02-03777940T10.3 ppb
2014-02-03777941T8.20 ppb
2014-02-03777942T13.7 ppb
2014-02-03777943T9.00 ppb
2014-02-03777944T7.50 ppb
2014-05-06784626T5.90 ppb
2014-05-06784627T8.10 ppb
2014-05-06784628T10.8 ppb
2014-05-06784629T21.0 ppb
2014-05-06784630T7.50 ppb
2014-05-06784631T6.90 ppb
2014-05-06784632T8.40 ppb
2014-05-06784633T6.70 ppb
2014-08-05791674T16.9 ppb
2014-08-05791675T20.2 ppb
2014-08-05791676T17.8 ppb
2014-08-05791677T14.2 ppb
2014-08-05791678T14.7 ppb
2014-08-05791679T20.3 ppb
2014-08-05791680T17.1 ppb
2014-08-05791681T16.8 ppb
2014-11-03798791T11.9 ppb
2014-11-03798792T12.5 ppb
2014-11-03798793T16.3 ppb
2014-11-03798796T10.6 ppb
2014-11-03798795T11.5 ppb
2014-11-04798794T11.2 ppb
2014-11-04798797T11.3 ppb
2014-11-04798798T13.0 ppb
2015-02-0211.7 ppb
2015-02-0212.1 ppb
2015-02-027.40 ppb
2015-02-038.40 ppb
2015-02-0314.4 ppb
2015-02-039.40 ppb
2015-02-037.70 ppb
2015-02-0310.9 ppb
2015-05-0415.0 ppb
2015-05-0418.0 ppb
2015-05-0418.0 ppb
2015-05-0414.0 ppb
2015-05-0415.0 ppb
2015-05-0411.0 ppb
2015-05-0414.0 ppb
2015-05-0416.0 ppb
2015-08-0426.0 ppb
2015-08-0430.0 ppb
2015-08-0432.0 ppb
2015-08-0430.0 ppb
2015-08-0424.0 ppb
2015-08-0427.0 ppb
2015-08-0425.0 ppb
2015-08-0429.0 ppb
2015-11-0320.0 ppb
2015-11-0325.0 ppb
2015-11-0327.0 ppb
2015-11-0329.0 ppb
2015-11-0313.0 ppb
2015-11-0320.0 ppb
2015-11-0319.0 ppb
2015-11-0318.0 ppb
2016-02-0333953498.10 ppb
2016-02-0333953508.50 ppb
2016-02-0333953518.00 ppb
2016-02-0333953529.80 ppb
2016-02-0333953536.40 ppb
2016-02-0333953547.70 ppb
2016-02-0333953556.50 ppb
2016-02-0333953566.70 ppb
2016-05-02344024211.0 ppb
2016-05-02344024311.0 ppb
2016-05-02344024412.0 ppb
2016-05-02344024512.0 ppb
2016-05-0234402469.30 ppb
2016-05-02344024710.00 ppb
2016-05-02344024811.0 ppb
2016-05-02344024910.00 ppb
2016-08-0137729_16-2607625.0 ppb
2016-08-0237729_16-2606926.0 ppb
2016-08-0237729_16-2607027.0 ppb
2016-08-0237729_16-2607130.0 ppb
2016-08-0237729_16-2607224.0 ppb
2016-08-0237729_16-2607325.0 ppb
2016-08-0237729_16-2607431.0 ppb
2016-08-0237729_16-2607525.0 ppb
2016-11-0837729_16-3909821.0 ppb
2016-11-0837729_16-3909920.0 ppb
2016-11-0837729_16-3910024.0 ppb
2016-11-0837729_16-3910121.0 ppb
2016-11-0837729_16-3910218.0 ppb
2016-11-0837729_16-3910321.0 ppb
2016-11-0837729_16-3910421.0 ppb
2016-11-0837729_16-3910521.0 ppb
2017-02-0637729_17-0450220.0 ppb
2017-02-0637729_17-0450319.0 ppb
2017-02-0637729_17-0450418.0 ppb
2017-02-0637729_17-0450518.0 ppb
2017-02-0637729_17-0450620.0 ppb
2017-02-0637729_17-0450718.0 ppb
2017-02-0637729_17-0450819.0 ppb
2017-02-0637729_17-0450918.0 ppb
2017-05-0237729_17-1490917.0 ppb
2017-05-0237729_17-1491018.0 ppb
2017-05-0237729_17-1491122.0 ppb
2017-05-0237729_17-1491221.0 ppb
2017-05-0237729_17-1491318.0 ppb
2017-05-0237729_17-1491420.0 ppb
2017-05-0237729_17-1491518.0 ppb
2017-05-0237729_17-1491617.0 ppb
2017-08-0737729_17-2814019.0 ppb
2017-08-0737729_17-2814120.0 ppb
2017-08-0737729_17-2814226.0 ppb
2017-08-0737729_17-2814320.0 ppb
2017-08-0737729_17-2814424.0 ppb
2017-08-0737729_17-2814523.0 ppb
2017-08-0737729_17-2814621.0 ppb
2017-08-0737729_17-2814721.0 ppb
2017-11-0637729_17-4220117.0 ppb
2017-11-0637729_17-4220217.0 ppb
2017-11-0637729_17-4220321.0 ppb
2017-11-0637729_17-4220418.0 ppb
2017-11-0637729_17-4220518.0 ppb
2017-11-0637729_17-4220620.0 ppb
2017-11-0637729_17-4220717.0 ppb
2017-11-0637729_17-4220816.0 ppb
2018-02-0637729_18-05464 13.0 ppb
2018-02-0637729_18-05465 12.0 ppb
2018-02-0637729_18-05466 12.0 ppb
2018-02-0637729_18-05467 13.0 ppb
2018-02-0637729_18-05468 13.0 ppb
2018-02-0637729_18-05469 12.0 ppb
2018-02-0637729_18-05470 11.0 ppb
2018-02-0637729_18-05471 11.0 ppb
2018-05-0837729_18-18189 18.0 ppb
2018-05-0837729_18-18190 20.0 ppb
2018-05-0837729_18-18191 21.0 ppb
2018-05-0837729_18-18192 22.0 ppb
2018-05-0837729_18-18193 24.0 ppb
2018-05-0837729_18-18194 21.0 ppb
2018-05-0837729_18-18195 21.0 ppb
2018-05-0837729_18-18196 18.0 ppb
2018-08-0837729_18-32777 16.0 ppb
2018-08-0837729_18-32778 13.0 ppb
2018-08-0837729_18-32779 18.0 ppb
2018-08-0837729_18-32780 13.0 ppb
2018-08-0837729_18-32781 18.0 ppb
2018-08-0837729_18-32782 22.0 ppb
2018-08-0837729_18-32783 11.0 ppb
2018-08-0837729_18-32784 11.0 ppb
2018-11-0637729_18-46674 17.0 ppb
2018-11-0637729_18-46675 17.0 ppb
2018-11-0637729_18-46676 17.0 ppb
2018-11-0637729_18-46677 19.0 ppb
2018-11-0637729_18-46678 17.0 ppb
2018-11-0637729_18-46679 21.0 ppb
2018-11-0637729_18-46680 16.0 ppb
2018-11-0637729_18-46681 16.0 ppb
2019-02-0637729_19-05682 9.00 ppb
2019-02-0637729_19-05693 10.00 ppb
2019-02-0637729_19-05694 10.00 ppb
2019-02-0637729_19-05695 15.0 ppb
2019-02-0637729_19-05696 10.00 ppb
2019-02-0637729_19-05697 11.0 ppb
2019-02-0637729_19-05698 10.00 ppb
2019-02-0637729_19-05699 8.00 ppb
2019-05-0737729_19-18790 14.0 ppb
2019-05-0737729_19-18791 15.0 ppb
2019-05-0737729_19-18792 15.0 ppb
2019-05-0737729_19-18793 18.0 ppb
2019-05-0737729_19-18794 15.0 ppb
2019-05-0737729_19-18795 18.0 ppb
2019-05-0737729_19-18796 14.0 ppb
2019-05-0737729_19-18797 14.0 ppb
2019-08-0637729_19-33836 14.0 ppb
2019-08-0637729_19-33837 17.0 ppb
2019-08-0637729_19-33838 25.0 ppb
2019-08-0637729_19-33839 22.0 ppb
2019-08-0637729_19-33840 23.0 ppb
2019-08-0637729_19-33841 19.0 ppb
2019-08-0637729_19-33842 19.0 ppb
2019-08-0637729_19-33843 17.0 ppb
2019-11-0537729_19-47816 14.0 ppb
2019-11-0537729_19-47817 15.0 ppb
2019-11-0537729_19-47818 14.0 ppb
2019-11-0537729_19-47819 15.0 ppb
2019-11-0537729_19-47820 16.0 ppb
2019-11-0537729_19-47821 15.0 ppb
2019-11-0537729_19-47822 13.0 ppb
2019-11-0537729_19-47823 13.0 ppb