Dichloroacetic acid

Redlands City

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

233

Samples

Samples exceeding legal limit (MCL)

149

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	4.68 ppb	32	16	ND - 39.0 ppb
2015	4.99 ppb	33	22	ND - 13.0 ppb
2016	11.1 ppb	45	38	ND - 30.0 ppb
2017	9.30 ppb	32	21	ND - 30.0 ppb
2018	4.94 ppb	32	24	ND - 13.0 ppb
2019	3.39 ppb	59	28	ND - 17.0 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
2014-02-04	9590-601-1040	2.40 ppb
2014-02-04	9590-602-1000	2.50 ppb
2014-02-04	9590-603-0820	8.80 ppb
2014-02-04	9590-604-1020	7.10 ppb
2014-02-04	9590-605-0840	10.00 ppb
2014-02-04	9590-606-0935	ND
2014-02-04	9590-607-0910	ND
2014-02-04	9590-608-1110	ND
2014-05-08	9590-601-1030	5.00 ppb
2014-05-08	9590-602-0935	39.0 ppb
2014-05-08	9590-603-0950	15.0 ppb
2014-05-08	9590-604-1015	11.0 ppb
2014-05-08	9590-605-0900	19.0 ppb
2014-05-08	9590-606-1055	ND
2014-05-08	9590-607-0920	ND
2014-05-08	9590-608-1035	ND
2014-08-14	9590-601-1040	ND
2014-08-14	9590-602-1010	6.10 ppb
2014-08-14	9590-603-0945	5.40 ppb
2014-08-14	9590-604-1020	3.60 ppb
2014-08-14	9590-605-0910	7.60 ppb
2014-08-14	9590-606-1100	ND
2014-08-14	9590-607-0925	ND
2014-08-14	9590-608-0835	ND
2014-12-04	9590-601-1045	ND
2014-12-04	9590-602-0925	ND
2014-12-04	9590-603-0950	5.70 ppb
2014-12-04	9590-604-1020	1.70 ppb
2014-12-04	9590-605-0900	ND
2014-12-04	9590-606-0910	ND
2014-12-04	9590-607-0910	ND
2014-12-04	9590-608-0830	ND
2015-02-12	9590-601-0955	8.10 ppb
2015-02-12	9590-602-0900	7.40 ppb
2015-02-12	9590-603-0920	8.90 ppb
2015-02-12	9590-604-0840	2.90 ppb
2015-02-12	9590-605-0830	4.00 ppb
2015-02-12	9590-606-1045	ND
2015-02-12	9590-607-0840	ND
2015-02-12	9590-608-1015	ND
2015-05-14	9590-601-0945	5.60 ppb
2015-05-14	9590-602-0930	6.90 ppb
2015-05-14	9590-603-0905	9.30 ppb
2015-05-14	9590-604-0930	5.90 ppb
2015-05-14	9590-605-0845	4.30 ppb
2015-05-14	9590-606-1040	ND
2015-05-14	9590-607-0900	ND
2015-05-14	9590-608-1040	ND
2015-08-11	9590-601-0900	4.00 ppb
2015-08-11	9590-602-0750	7.40 ppb
2015-08-11	9590-603-0815	9.90 ppb
2015-08-11	9590-604-0940	9.40 ppb
2015-08-11	9590-605-0840	7.40 ppb
2015-08-11	9590-606-1100	ND
2015-08-11	9590-607-1215	ND
2015-08-11	9590-608-1230	ND
2015-08-25	9590-607-1010	ND
2015-11-12	9590-601-0945	12.0 ppb
2015-11-12	9590-602-0915	13.0 ppb
2015-11-12	9590-603-0810	11.0 ppb
2015-11-12	9590-604-0825	7.20 ppb
2015-11-12	9590-605-0900	4.20 ppb
2015-11-12	9590-606-0850	ND
2015-11-12	9590-607-1000	2.80 ppb
2015-11-12	9590-608-1020	13.0 ppb
2016-02-11	9590-601-1030	15.0 ppb
2016-02-11	9590-602-0845	2.70 ppb
2016-02-11	9590-603-0945	5.40 ppb
2016-02-11	9590-604-1015	1.50 ppb
2016-02-11	9590-605-0900	1.90 ppb
2016-02-11	9590-606-0805	ND
2016-02-11	9590-607-0825	ND
2016-02-11	9590-608-1015	ND
2016-03-03	9590-601-0930	7.40 ppb
2016-04-18	9590-602-1005	17.0 ppb
2016-04-18	9590-603-1020	17.0 ppb
2016-04-18	9590-604-1040	18.0 ppb
2016-04-18	9590-605-1000	13.0 ppb
2016-04-25	9590-602-1215	27.0 ppb
2016-04-25	9590-603-1025	25.0 ppb
2016-04-25	9590-604-1045	30.0 ppb
2016-04-25	9590-605-1000	27.0 ppb
2016-05-03	9590-602-1010	8.40 ppb
2016-05-03	9590-603-1025	23.0 ppb
2016-05-03	9590-604-1040	20.0 ppb
2016-05-03	9590-605-0950	28.0 ppb
2016-05-12	9590-601-1020	20.0 ppb
2016-05-12	9590-602-0945	12.0 ppb
2016-05-12	9590-603-0930	24.0 ppb
2016-05-12	9590-604-1005	16.0 ppb
2016-05-12	9590-605-0830	22.0 ppb
2016-05-12	9590-606-0820	ND
2016-05-12	9590-607-0850	7.50 ppb
2016-05-12	9590-608-1050	17.0 ppb
2016-08-18	5810-601-0110	3.10 ppb
2016-08-18	5810-602-1010	7.50 ppb
2016-08-18	5810-603-1240	10.00 ppb
2016-08-18	5810-604-1255	8.70 ppb
2016-08-18	5810-605-0930	5.80 ppb
2016-08-18	5810-606-1000	ND
2016-08-18	5810-607-0945	ND
2016-08-18	5810-608-0145	1.10 ppb
2016-11-10	5810-601-0855	3.90 ppb
2016-11-10	5810-602-0920	5.50 ppb
2016-11-10	5810-603-0800	14.0 ppb
2016-11-10	5810-604-0815	12.0 ppb
2016-11-10	5810-605-0845	12.0 ppb
2016-11-10	5810-606-0945	ND
2016-11-10	5810-607-0900	4.20 ppb
2016-11-10	5810-608-0830	5.00 ppb
2017-02-16	5810-601-0920	30.0 ppb
2017-02-16	5810-602-0850	21.0 ppb
2017-02-16	5810-603-0820	19.0 ppb
2017-02-16	5810-604-0900	27.0 ppb
2017-02-16	5810-605-0835	21.0 ppb
2017-02-16	5810-606-1055	ND
2017-02-16	5810-607-1035	ND
2017-02-16	5810-608-1000	24.0 ppb
2017-05-11	5810-601-0850	16.0 ppb
2017-05-11	5810-602-1000	6.30 ppb
2017-05-11	5810-603-0940	15.0 ppb
2017-05-11	5810-604-0915	14.0 ppb
2017-05-11	5810-605-1020	ND
2017-05-11	5810-606-1110	ND
2017-05-11	5810-607-1050	ND
2017-05-11	5810-608-0830	ND
2017-08-04	5810-601-1035	17.0 ppb
2017-08-04	5810-602-1000	12.0 ppb
2017-08-04	5810-603-0950	12.0 ppb
2017-08-04	5810-604-1015	11.0 ppb
2017-08-04	5810-605-0930	9.50 ppb
2017-08-04	5810-606-0800	ND
2017-08-04	5810-607-0915	17.0 ppb
2017-08-04	5810-608-1050	ND
2017-11-09	5810-601-0930	ND
2017-11-09	5810-602-0840	5.80 ppb
2017-11-09	5810-603-0815	6.60 ppb
2017-11-09	5810-604-0900	6.10 ppb
2017-11-09	5810-605-0910	5.30 ppb
2017-11-09	5810-606-1030	ND
2017-11-09	5810-607-0955	1.90 ppb
2017-11-09	5810-608-1000	ND
2018-02-23	5810-601-1010	13.0 ppb
2018-02-23	5810-602-0815	5.40 ppb
2018-02-23	5810-603-0930	7.10 ppb
2018-02-23	5810-604-0950	6.80 ppb
2018-02-23	5810-605-0915	5.10 ppb
2018-02-23	5810-606-0800	11.0 ppb
2018-02-23	5810-607-1300	12.0 ppb
2018-02-23	5810-608-1045	ND
2018-05-18	5810-601-0900	13.0 ppb
2018-05-18	5810-602-0950	7.90 ppb
2018-05-18	5810-603-0935	2.80 ppb
2018-05-18	5810-604-0915	7.20 ppb
2018-05-18	5810-605-1010	3.30 ppb
2018-05-18	5810-606-1245	10.00 ppb
2018-05-18	5810-607-1230	2.80 ppb
2018-05-18	5810-608-0830	6.90 ppb
2018-08-24	4790-601-0915	ND
2018-08-24	4790-602-1250	ND
2018-08-24	4790-603-1020	5.80 ppb
2018-08-24	4790-604-0950	6.40 ppb
2018-08-24	4790-605-0910	5.40 ppb
2018-08-24	4790-606-1055	ND
2018-08-24	4790-607-0935	1.20 ppb
2018-08-24	4790-608-0845	ND
2018-11-21	4790-601-1205	3.20 ppb
2018-11-21	4790-602-0715	4.60 ppb
2018-11-21	4790-603-0750	6.40 ppb
2018-11-21	4790-604-0820	6.20 ppb
2018-11-21	4790-605-0905	4.70 ppb
2018-11-21	4790-606-1215	ND
2018-11-21	4790-607-1245	ND
2018-11-21	4790-608-0940	ND
2019-02-08	4790-601-0900	3.80 ppb
2019-02-08	4790-602-1100	ND
2019-02-08	4790-603-0940	1.40 ppb
2019-02-08	4790-604-0920	1.000 ppb
2019-02-08	4790-605-0955	ND
2019-02-08	4790-606-1300	ND
2019-02-08	4790-607-1045	ND
2019-02-08	4790-608-0830	8.80 ppb
2019-02-14	4790-601-0945	2.00 ppb
2019-02-14	4790-602-1000	1.30 ppb
2019-02-14	4790-603-0845	ND
2019-02-14	4790-604-0910	1.20 ppb
2019-02-14	4790-605-0930	3.70 ppb
2019-02-14	4790-606-0900	2.40 ppb
2019-02-14	4790-607-1045	1.70 ppb
2019-02-14	4790-608-1025	ND
2019-05-22	4790-601-0930	9.10 ppb
2019-05-22	4790-602-1000	14.0 ppb
2019-05-22	4790-603-0815	9.50 ppb
2019-05-22	4790-604-0845	15.0 ppb
2019-05-22	4790-605-1025	8.70 ppb
2019-05-22	4790-606-1100	ND
2019-05-22	4790-607-1220	ND
2019-05-22	4790-608-1315	ND
2019-06-20	4790-035-0930	13.0 ppb
2019-06-27	4790-003-0845	ND
2019-06-27	4790-069-0945	ND
2019-06-27	4790-070-1325	ND
2019-08-19	4790-008-1100	ND
2019-08-19	4790-062-0950	ND
2019-08-21	4790-021-1140	ND
2019-08-22	4790-019-1050	ND
2019-08-23	4790-601-0945	7.10 ppb
2019-08-23	4790-602-0835	9.00 ppb
2019-08-23	4790-603-0855	9.80 ppb
2019-08-23	4790-604-0920	9.90 ppb
2019-08-23	4790-605-0905	8.70 ppb
2019-08-23	4790-606-1000	ND
2019-08-23	4790-607-0930	ND
2019-08-23	4790-608-1020	ND
2019-08-27	4790-053-1350	ND
2019-08-27	4790-055-0800	ND
2019-08-27	4790-060-1230	ND
2019-08-28	4790-017-1330	ND
2019-08-29	4790-029-0945	ND
2019-09-10	4790-010-0930	ND
2019-09-17	4790-031-0930	ND
2019-09-19	4790-025-0915	ND
2019-09-19	4790-026-1020	ND
2019-09-30	4790-012-1320	17.0 ppb
2019-09-30	4790-022-0910	ND
2019-11-15	4790-601-0945	11.0 ppb
2019-11-15	4790-602-1230	4.60 ppb
2019-11-15	4790-603-0920	6.20 ppb
2019-11-15	4790-604-0930	6.60 ppb
2019-11-15	4790-605-0900	4.20 ppb
2019-11-15	4790-606-0815	ND
2019-11-15	4790-607-0840	ND
2019-11-15	4790-608-1310	9.20 ppb