Dichloroacetic acid

City of Asheville

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

Samples exceeding legal limit (MCL)

191

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	13.9 ppb	32	32	3.00 ppb - 20.0 ppb
2015	14.6 ppb	32	32	4.00 ppb - 26.0 ppb
2016	14.7 ppb	32	32	2.00 ppb - 23.0 ppb
2017	13.8 ppb	32	31	ND - 28.0 ppb
2018	16.4 ppb	32	32	4.00 ppb - 33.0 ppb
2019	15.2 ppb	32	32	4.00 ppb - 30.0 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
2014-02-10	37729_14-03988	10.00 ppb
2014-02-10	37729_14-03989	15.0 ppb
2014-02-10	37729_14-03990	12.0 ppb
2014-02-10	37729_14-03991	11.0 ppb
2014-02-10	37729_14-03992	13.0 ppb
2014-02-10	37729_14-03993	11.0 ppb
2014-02-10	37729_14-03994	11.0 ppb
2014-02-10	37729_14-03995	16.0 ppb
2014-05-06	37729_14-12613	10.00 ppb
2014-05-06	37729_14-12614	16.0 ppb
2014-05-06	37729_14-12615	13.0 ppb
2014-05-06	37729_14-12616	11.0 ppb
2014-05-06	37729_14-12617	15.0 ppb
2014-05-06	37729_14-12618	10.00 ppb
2014-05-06	37729_14-12619	10.00 ppb
2014-05-06	37729_14-12620	14.0 ppb
2014-08-04	37729_14-23138	3.00 ppb
2014-08-04	37729_14-23139	4.00 ppb
2014-08-04	37729_14-23140	14.0 ppb
2014-08-04	37729_14-23141	18.0 ppb
2014-08-04	37729_14-23142	14.0 ppb
2014-08-04	37729_14-23143	16.0 ppb
2014-08-04	37729_14-23144	14.0 ppb
2014-08-04	37729_14-23145	13.0 ppb
2014-11-05	37729_14-33661	18.0 ppb
2014-11-05	37729_14-33662	19.0 ppb
2014-11-05	37729_14-33663	17.0 ppb
2014-11-05	37729_14-33664	19.0 ppb
2014-11-05	37729_14-33665	20.0 ppb
2014-11-05	37729_14-33666	20.0 ppb
2014-11-05	37729_14-33667	18.0 ppb
2014-11-05	37729_14-33668	19.0 ppb
2015-02-03		17.0 ppb
2015-02-03		12.0 ppb
2015-02-03		9.00 ppb
2015-02-03		12.0 ppb
2015-02-03		13.0 ppb
2015-02-03		15.0 ppb
2015-02-03		16.0 ppb
2015-02-03		14.0 ppb
2015-05-12		19.0 ppb
2015-05-12		14.0 ppb
2015-05-12		9.00 ppb
2015-05-12		14.0 ppb
2015-05-12		10.00 ppb
2015-05-12		10.00 ppb
2015-05-12		14.0 ppb
2015-05-12		12.0 ppb
2015-08-05		14.0 ppb
2015-08-05		13.0 ppb
2015-08-05		13.0 ppb
2015-08-05		13.0 ppb
2015-08-05		16.0 ppb
2015-08-05		14.0 ppb
2015-08-05		21.0 ppb
2015-08-05		4.00 ppb
2015-11-03		12.0 ppb
2015-11-03		10.00 ppb
2015-11-03		24.0 ppb
2015-11-03		14.0 ppb
2015-11-03		20.0 ppb
2015-11-03		26.0 ppb
2015-11-03		21.0 ppb
2015-11-03		23.0 ppb
2016-02-04	37729_16-03660	17.0 ppb
2016-02-04	37729_16-03661	15.0 ppb
2016-02-04	37729_16-03662	10.00 ppb
2016-02-04	37729_16-03663	15.0 ppb
2016-02-04	37729_16-03664	12.0 ppb
2016-02-04	37729_16-03665	18.0 ppb
2016-02-04	37729_16-03666	18.0 ppb
2016-02-04	37729_16-03667	12.0 ppb
2016-05-02	37729_16-13766	12.0 ppb
2016-05-02	37729_16-13767	17.0 ppb
2016-05-02	37729_16-13768	18.0 ppb
2016-05-02	37729_16-13769	14.0 ppb
2016-05-02	37729_16-13770	16.0 ppb
2016-05-02	37729_16-13771	11.0 ppb
2016-05-02	37729_16-13772	14.0 ppb
2016-05-02	37729_16-13773	11.0 ppb
2016-08-03	37729_16-26423	17.0 ppb
2016-08-03	37729_16-26425	2.00 ppb
2016-08-03	37729_16-26426	13.0 ppb
2016-08-03	37729_16-26427	18.0 ppb
2016-08-03	37729_16-26428	11.0 ppb
2016-08-03	37729_16-26429	18.0 ppb
2016-08-03	37729_16-26430	17.0 ppb
2016-08-03	37729_16-26431	14.0 ppb
2016-11-07	37729_16-38893	23.0 ppb
2016-11-07	37729_16-38894	15.0 ppb
2016-11-07	37729_16-38895	18.0 ppb
2016-11-07	37729_16-38896	18.0 ppb
2016-11-07	37729_16-38900	21.0 ppb
2016-11-07	37729_16-38901	13.0 ppb
2016-11-07	37729_16-38908	14.0 ppb
2016-11-07	37729_16-38914	8.00 ppb
2017-02-01	37729_17-03780	11.0 ppb
2017-02-01	37729_17-03781	9.00 ppb
2017-02-01	37729_17-03782	14.0 ppb
2017-02-01	37729_17-03783	11.0 ppb
2017-02-01	37729_17-03784	10.00 ppb
2017-02-01	37729_17-03785	12.0 ppb
2017-02-01	37729_17-03786	9.00 ppb
2017-02-01	37729_17-03787	9.00 ppb
2017-05-08	37729_17-15195	14.0 ppb
2017-05-08	37729_17-15196	12.0 ppb
2017-05-08	37729_17-15197	14.0 ppb
2017-05-08	37729_17-15198	15.0 ppb
2017-05-08	37729_17-15199	ND
2017-05-08	37729_17-15200	14.0 ppb
2017-05-08	37729_17-15201	17.0 ppb
2017-05-08	37729_17-15202	10.00 ppb
2017-08-09	37729_17-28471	17.0 ppb
2017-08-09	37729_17-28481	3.00 ppb
2017-08-09	37729_17-28482	18.0 ppb
2017-08-09	37729_17-28483	3.00 ppb
2017-08-09	37729_17-28484	12.0 ppb
2017-08-09	37729_17-28485	19.0 ppb
2017-08-09	37729_17-28486	20.0 ppb
2017-08-09	37729_17-28487	15.0 ppb
2017-11-08	37729_17-42281	27.0 ppb
2017-11-08	37729_17-42282	5.00 ppb
2017-11-08	37729_17-42283	17.0 ppb
2017-11-08	37729_17-42284	5.00 ppb
2017-11-08	37729_17-42285	23.0 ppb
2017-11-08	37729_17-42286	28.0 ppb
2017-11-08	37729_17-42287	26.0 ppb
2017-11-08	37729_17-42288	22.0 ppb
2018-02-13	37729_18-05844	17.0 ppb
2018-02-13	37729_18-05845	14.0 ppb
2018-02-13	37729_18-05846	11.0 ppb
2018-02-13	37729_18-05847	15.0 ppb
2018-02-13	37729_18-05848	14.0 ppb
2018-02-13	37729_18-05849	17.0 ppb
2018-02-13	37729_18-05850	17.0 ppb
2018-02-13	37729_18-05851	15.0 ppb
2018-05-09	37729_18-18806	15.0 ppb
2018-05-09	37729_18-18807	13.0 ppb
2018-05-09	37729_18-18808	10.00 ppb
2018-05-09	37729_18-18809	16.0 ppb
2018-05-09	37729_18-18810	11.0 ppb
2018-05-09	37729_18-18811	16.0 ppb
2018-05-09	37729_18-18812	13.0 ppb
2018-05-09	37729_18-18813	11.0 ppb
2018-08-06	37729_18-31982	17.0 ppb
2018-08-06	37729_18-31983	4.00 ppb
2018-08-06	37729_18-31984	16.0 ppb
2018-08-06	37729_18-31985	17.0 ppb
2018-08-06	37729_18-31986	13.0 ppb
2018-08-06	37729_18-31987	17.0 ppb
2018-08-06	37729_18-31988	16.0 ppb
2018-08-06	37729_18-31989	13.0 ppb
2018-11-05	37729_18-45873	29.0 ppb
2018-11-05	37729_18-45874	21.0 ppb
2018-11-05	37729_18-45875	22.0 ppb
2018-11-05	37729_18-45876	7.00 ppb
2018-11-05	37729_18-45877	21.0 ppb
2018-11-05	37729_18-45878	33.0 ppb
2018-11-05	37729_18-45879	32.0 ppb
2018-11-05	37729_18-45880	22.0 ppb
2019-02-06	37729_19-05662	17.0 ppb
2019-02-06	37729_19-05663	12.0 ppb
2019-02-06	37729_19-05664	9.00 ppb
2019-02-06	37729_19-05665	14.0 ppb
2019-02-06	37729_19-05666	11.0 ppb
2019-02-06	37729_19-05667	13.0 ppb
2019-02-06	37729_19-05668	13.0 ppb
2019-02-06	37729_19-05669	11.0 ppb
2019-05-06	37729_19-18135	11.0 ppb
2019-05-06	37729_19-18136	11.0 ppb
2019-05-06	37729_19-18140	12.0 ppb
2019-05-06	37729_19-18141	14.0 ppb
2019-05-06	37729_19-18142	8.00 ppb
2019-05-06	37729_19-18143	13.0 ppb
2019-05-06	37729_19-18144	17.0 ppb
2019-05-06	37729_19-18145	11.0 ppb
2019-08-06	37729_19-33272	20.0 ppb
2019-08-06	37729_19-33273	4.00 ppb
2019-08-06	37729_19-33274	20.0 ppb
2019-08-06	37729_19-33275	17.0 ppb
2019-08-06	37729_19-33276	15.0 ppb
2019-08-06	37729_19-33277	16.0 ppb
2019-08-06	37729_19-33278	16.0 ppb
2019-08-06	37729_19-33279	13.0 ppb
2019-11-04	37729_19-47095	28.0 ppb
2019-11-04	37729_19-47096	4.00 ppb
2019-11-04	37729_19-47097	22.0 ppb
2019-11-04	37729_19-47098	13.0 ppb
2019-11-04	37729_19-47099	22.0 ppb
2019-11-04	37729_19-47100	30.0 ppb
2019-11-04	37729_19-47101	30.0 ppb
2019-11-04	37729_19-47102	19.0 ppb