Dichloroacetic acid

West Hwy 80 Ark Road WS

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)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	32	0	ND
2015	ND	32	0	ND
2016	ND	32	0	ND
2017	3.58 ppb	32	32	1.80 ppb - 7.60 ppb
2018	5.74 ppb	32	32	2.70 ppb - 8.50 ppb
2019	3.00 ppb	32	32	0.990 ppb - 4.40 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
2014-02-18	1278951	ND
2014-02-18	1278952	ND
2014-02-18	1278953	ND
2014-02-18	1278954	ND
2014-02-18	1278951	ND
2014-02-18	1278952	ND
2014-02-18	1278953	ND
2014-02-18	1278954	ND
2014-05-15	1302273	ND
2014-05-15	1302274	ND
2014-05-15	1302275	ND
2014-05-15	1302276	ND
2014-05-15	1302273	ND
2014-05-15	1302274	ND
2014-05-15	1302275	ND
2014-05-15	1302276	ND
2014-08-21	1328640	ND
2014-08-21	1328641	ND
2014-08-21	1328642	ND
2014-08-21	1328643	ND
2014-08-21	1328640	ND
2014-08-21	1328641	ND
2014-08-21	1328642	ND
2014-08-21	1328643	ND
2014-11-25	1353111	ND
2014-11-25	1353112	ND
2014-11-25	1353113	ND
2014-11-25	1353114	ND
2014-11-25	1353111	ND
2014-11-25	1353112	ND
2014-11-25	1353113	ND
2014-11-25	1353114	ND
2015-02-18	1373853	ND
2015-02-18	1373854	ND
2015-02-18	1373855	ND
2015-02-18	1373856	ND
2015-02-18	1373853	ND
2015-02-18	1373854	ND
2015-02-18	1373855	ND
2015-02-18	1373856	ND
2015-05-19	1396214	ND
2015-05-19	1396215	ND
2015-05-19	1396216	ND
2015-05-19	1396217	ND
2015-05-19	1396214	ND
2015-05-19	1396215	ND
2015-05-19	1396216	ND
2015-05-19	1396217	ND
2015-08-03	1415897	ND
2015-08-03	1415898	ND
2015-08-03	1415899	ND
2015-08-03	1415900	ND
2015-08-03	1415897	ND
2015-08-03	1415898	ND
2015-08-03	1415899	ND
2015-08-03	1415900	ND
2015-11-18	1445672	ND
2015-11-18	1445673	ND
2015-11-18	1445672	ND
2015-11-18	1445673	ND
2015-11-19	1445670	ND
2015-11-19	1445671	ND
2015-11-19	1445670	ND
2015-11-19	1445671	ND
2016-02-11	1467309	ND
2016-02-11	1467310	ND
2016-02-11	1467311	ND
2016-02-11	1467312	ND
2016-02-11	1467309	ND
2016-02-11	1467310	ND
2016-02-11	1467311	ND
2016-02-11	1467312	ND
2016-05-05	1490078	ND
2016-05-05	1490079	ND
2016-05-05	1490080	ND
2016-05-05	1490081	ND
2016-05-05	1490078	ND
2016-05-05	1490079	ND
2016-05-05	1490080	ND
2016-05-05	1490081	ND
2016-08-09	1514789	ND
2016-08-09	1514790	ND
2016-08-09	1514797	ND
2016-08-09	1514798	ND
2016-08-09	1514789	ND
2016-08-09	1514790	ND
2016-08-09	1514797	ND
2016-08-09	1514798	ND
2016-11-01	1537963	ND
2016-11-01	1537964	ND
2016-11-01	1537971	ND
2016-11-01	1537972	ND
2016-11-01	1537963	ND
2016-11-01	1537964	ND
2016-11-01	1537971	ND
2016-11-01	1537972	ND
2017-02-09	35294548023	2.30 ppb
2017-02-09	35294548024	2.20 ppb
2017-02-09	35294548025	1.80 ppb
2017-02-09	35294548026	2.00 ppb
2017-02-09	35294548023	2.30 ppb
2017-02-09	35294548024	2.20 ppb
2017-02-09	35294548025	1.80 ppb
2017-02-09	35294548026	2.00 ppb
2017-05-05	35310618031	2.90 ppb
2017-05-05	35310618032	2.70 ppb
2017-05-05	35310618033	2.90 ppb
2017-05-05	35310618034	1.90 ppb
2017-05-05	35310618031	2.90 ppb
2017-05-05	35310618032	2.70 ppb
2017-05-05	35310618033	2.90 ppb
2017-05-05	35310618034	1.90 ppb
2017-08-14	35331285009	4.60 ppb
2017-08-14	35331285010	7.00 ppb
2017-08-14	35331285011	7.60 ppb
2017-08-14	35331285009	4.60 ppb
2017-08-14	35331285010	7.00 ppb
2017-08-14	35331285011	7.60 ppb
2017-08-29	35333221001	4.50 ppb
2017-08-29	35333221001	4.50 ppb
2017-11-09	35347549001	3.30 ppb
2017-11-09	35347549002	4.00 ppb
2017-11-09	35347549003	5.00 ppb
2017-11-09	35347549004	2.50 ppb
2017-11-09	35347549001	3.30 ppb
2017-11-09	35347549002	4.00 ppb
2017-11-09	35347549003	5.00 ppb
2017-11-09	35347549004	2.50 ppb
2018-02-21	35376148001	3.20 ppb
2018-02-21	35376148002	5.20 ppb
2018-02-21	35376148003	3.40 ppb
2018-02-21	35376148004	3.00 ppb
2018-02-21	35376148001	3.20 ppb
2018-02-21	35376148002	5.20 ppb
2018-02-21	35376148003	3.40 ppb
2018-02-21	35376148004	3.00 ppb
2018-05-21	35393928001	4.40 ppb
2018-05-21	35393928002	5.70 ppb
2018-05-21	35393928003	6.00 ppb
2018-05-21	35393928004	5.50 ppb
2018-05-21	35393928001	4.40 ppb
2018-05-21	35393928002	5.70 ppb
2018-05-21	35393928003	6.00 ppb
2018-05-21	35393928004	5.50 ppb
2018-08-15	35411616001	8.10 ppb
2018-08-15	35411616002	7.20 ppb
2018-08-15	35411616003	7.10 ppb
2018-08-15	35411616004	7.60 ppb
2018-08-15	35411616001	8.10 ppb
2018-08-15	35411616002	7.20 ppb
2018-08-15	35411616003	7.10 ppb
2018-08-15	35411616004	7.60 ppb
2018-11-01	35428225005	8.50 ppb
2018-11-01	35428225006	6.80 ppb
2018-11-01	35428225007	2.70 ppb
2018-11-01	35428225008	7.50 ppb
2018-11-01	35428225005	8.50 ppb
2018-11-01	35428225006	6.80 ppb
2018-11-01	35428225007	2.70 ppb
2018-11-01	35428225008	7.50 ppb
2019-02-18	35449360001	1.70 ppb
2019-02-18	35449360002	3.60 ppb
2019-02-18	35449360003	3.70 ppb
2019-02-18	35449360004	0.990 ppb
2019-02-18	35449360001	1.70 ppb
2019-02-18	35449360002	3.60 ppb
2019-02-18	35449360003	3.70 ppb
2019-02-18	35449360004	0.990 ppb
2019-05-15	35469319001	3.20 ppb
2019-05-15	35469319002	2.20 ppb
2019-05-15	35469319003	4.20 ppb
2019-05-15	35469319004	1.90 ppb
2019-05-15	35469319001	3.20 ppb
2019-05-15	35469319002	2.20 ppb
2019-05-15	35469319003	4.20 ppb
2019-05-15	35469319004	1.90 ppb
2019-08-01	35487022001	3.00 ppb
2019-08-01	35487022002	3.00 ppb
2019-08-01	35487022003	3.40 ppb
2019-08-01	35487022004	2.50 ppb
2019-08-01	35487022001	3.00 ppb
2019-08-01	35487022002	3.00 ppb
2019-08-01	35487022003	3.40 ppb
2019-08-01	35487022004	2.50 ppb
2019-11-19	35514087001	4.20 ppb
2019-11-19	35514087002	3.30 ppb
2019-11-19	35514087003	4.40 ppb
2019-11-19	35514087004	2.70 ppb
2019-11-19	35514087001	4.20 ppb
2019-11-19	35514087002	3.30 ppb
2019-11-19	35514087003	4.40 ppb
2019-11-19	35514087004	2.70 ppb