Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Dichloroacetic acid

City of Miles

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
20130.450 ppb82ND - 2.00 ppb
2014ND80ND
20150.750 ppb84ND - 2.00 ppb
20160.125 ppb81ND - 1.000 ppb
20171.19 ppb81ND - 9.50 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
2012-03-06AB83329ND
2012-03-06AB83331ND
2012-05-24AB90811ND
2012-05-24AB90804ND
2012-12-121212534003ND
2013-01-2813017360041.60 ppb
2013-01-2813017360052.00 ppb
2013-04-241304878005ND
2013-04-241304878004ND
2013-09-09Q1306764003ND
2013-09-09Q1306764001ND
2013-10-31Q1311057001ND
2013-10-31Q1311057002ND
2014-02-27AC45050ND
2014-02-27AC45056ND
2014-05-28AC55369ND
2014-05-28AC55370ND
2014-09-23AC68148ND
2014-09-23AC68146ND
2014-12-09AC74036ND
2014-12-09AC74050ND
2015-03-10AC83701ND
2015-03-10AC83697ND
2015-05-26AC935011.000 ppb
2015-05-26AC935021.40 ppb
2015-07-20AD001461.60 ppb
2015-07-20AD001162.00 ppb
2015-11-03AD12370ND
2015-11-03AD12325ND
2016-03-24AD30389ND
2016-03-24AD303901.000 ppb
2016-05-18AD37248ND
2016-05-18AD37245ND
2016-08-02AD46856ND
2016-08-02AD46853ND
2016-11-30AD59821ND
2016-11-30AD59816ND
2017-03-01Q1708976006ND
2017-03-01Q1708976005ND
2017-05-17Q1720175003ND
2017-05-17Q17201750019.50 ppb
2017-07-27Q1731206003ND
2017-07-27Q1731206002ND
2017-11-02Q1756369003ND
2017-11-02Q1756369001ND