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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Appalachian State Univ WTP

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

 

103

Samples

0

Samples exceeding legal limit (MCL)

103

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201418.5 ppb16169.00 ppb - 26.0 ppb
201526.7 ppb161616.0 ppb - 39.0 ppb
201622.1 ppb161613.0 ppb - 27.0 ppb
201729.4 ppb161619.0 ppb - 41.0 ppb
201825.4 ppb232315.0 ppb - 35.0 ppb
201919.6 ppb161614.0 ppb - 28.0 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
2014-01-3137729_14-031369.00 ppb
2014-01-3137729_14-031379.00 ppb
2014-01-3137729_14-0313810.00 ppb
2014-01-3137729_14-031399.00 ppb
2014-05-0537729_14-1241921.0 ppb
2014-05-0537729_14-1242022.0 ppb
2014-05-0537729_14-1242117.0 ppb
2014-05-0537729_14-1242218.0 ppb
2014-07-2837729_14-2234222.0 ppb
2014-07-2837729_14-2234326.0 ppb
2014-07-2837729_14-2234423.0 ppb
2014-07-2837729_14-2234526.0 ppb
2014-10-2137729_14-3204219.0 ppb
2014-10-2137729_14-3204320.0 ppb
2014-10-2137729_14-3204422.0 ppb
2014-10-2137729_14-3204523.0 ppb
2015-01-2122.0 ppb
2015-01-2116.0 ppb
2015-01-2122.0 ppb
2015-01-2117.0 ppb
2015-04-2317.0 ppb
2015-04-2320.0 ppb
2015-04-2319.0 ppb
2015-04-2317.0 ppb
2015-07-0834.0 ppb
2015-07-0833.0 ppb
2015-07-0830.0 ppb
2015-07-0831.0 ppb
2015-10-1437.0 ppb
2015-10-1439.0 ppb
2015-10-1434.0 ppb
2015-10-1439.0 ppb
2016-01-2837729_16-0284125.0 ppb
2016-01-2837729_16-0284225.0 ppb
2016-01-2837729_16-0284326.0 ppb
2016-01-2837729_16-0284425.0 ppb
2016-04-2737729_16-1316327.0 ppb
2016-04-2737729_16-1316427.0 ppb
2016-04-2737729_16-1316526.0 ppb
2016-04-2737729_16-1316626.0 ppb
2016-07-2637729_16-2480818.0 ppb
2016-07-2637729_16-2480923.0 ppb
2016-07-2637729_16-2481016.0 ppb
2016-07-2637729_16-2481113.0 ppb
2016-10-2637729_16-3744916.0 ppb
2016-10-2637729_16-3745023.0 ppb
2016-10-2637729_16-3745119.0 ppb
2016-10-2637729_16-3745219.0 ppb
2017-01-3037729_17-0333325.0 ppb
2017-01-3137729_17-0333419.0 ppb
2017-01-3137729_17-0333524.0 ppb
2017-01-3137729_17-0333624.0 ppb
2017-04-2637729_17-1385526.0 ppb
2017-04-2637729_17-1385627.0 ppb
2017-04-2637729_17-1385726.0 ppb
2017-04-2637729_17-1385826.0 ppb
2017-07-1837729_17-2478133.0 ppb
2017-07-1837729_17-2478233.0 ppb
2017-07-1837729_17-2478334.0 ppb
2017-07-1837729_17-2478441.0 ppb
2017-10-2537729_17-4017033.0 ppb
2017-10-2537729_17-4017138.0 ppb
2017-10-2537729_17-4017227.0 ppb
2017-10-2537729_17-4017334.0 ppb
2018-01-2537729_18-03304 29.0 ppb
2018-01-2537729_18-03305 26.0 ppb
2018-01-2537729_18-03306 25.0 ppb
2018-01-2537729_18-03307 27.0 ppb
2018-04-1037729_18-13909 30.0 ppb
2018-04-1037729_18-13910 32.0 ppb
2018-04-1037729_18-13911 34.0 ppb
2018-04-1037729_18-13912 35.0 ppb
2018-06-2737729_18-26233 29.0 ppb
2018-06-2737729_18-26234 29.0 ppb
2018-06-2737729_18-26235 30.0 ppb
2018-07-1937729_18-29589 20.0 ppb
2018-07-1937729_18-29590 22.0 ppb
2018-07-1937729_18-29591 18.0 ppb
2018-07-1937729_18-29592 25.0 ppb
2018-10-2337729_18-44087 27.0 ppb
2018-10-2337729_18-44088 27.0 ppb
2018-10-2337729_18-44089 26.0 ppb
2018-10-2337729_18-44090 29.0 ppb
2018-12-0537729_18-50959 17.0 ppb
2018-12-0537729_18-50960 15.0 ppb
2018-12-0537729_18-50961 16.0 ppb
2018-12-0537729_18-50962 16.0 ppb
2019-01-3037729_19-04371 15.0 ppb
2019-01-3037729_19-04374 16.0 ppb
2019-01-3037729_19-04375 16.0 ppb
2019-01-3037729_19-04376 16.0 ppb
2019-04-1037729_19-14814 14.0 ppb
2019-04-1037729_19-14815 17.0 ppb
2019-04-1037729_19-14816 14.0 ppb
2019-04-1037729_19-14817 15.0 ppb
2019-07-2337729_19-30874 25.0 ppb
2019-07-2337729_19-30875 23.0 ppb
2019-07-2337729_19-30876 20.0 ppb
2019-07-2337729_19-30877 21.0 ppb
2019-10-2237729_19-45545 25.0 ppb
2019-10-2237729_19-45546 22.0 ppb
2019-10-2237729_19-45547 27.0 ppb
2019-10-2237729_19-45548 28.0 ppb