Dichloroacetic acid

Beauregard Water Works District #3

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

276

Samples

Samples exceeding legal limit (MCL)

142

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	36	0	ND
2015	ND	48	0	ND
2016	ND	48	0	ND
2017	2.94 ppb	48	46	ND - 8.50 ppb
2018	2.59 ppb	48	48	0.720 ppb - 8.60 ppb
2019	3.71 ppb	48	48	0.420 ppb - 8.60 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
2014-03-25	1287963	ND
2014-03-25	1287965	ND
2014-03-25	1287966	ND
2014-03-25	1287967	ND
2014-03-25	1287968	ND
2014-03-25	1287969	ND
2014-03-25	1287963	ND
2014-03-25	1287965	ND
2014-03-25	1287966	ND
2014-03-25	1287967	ND
2014-03-25	1287968	ND
2014-03-25	1287969	ND
2014-06-25	1312926	ND
2014-06-25	1312927	ND
2014-06-25	1312928	ND
2014-06-25	1312929	ND
2014-06-25	1312930	ND
2014-06-25	1312931	ND
2014-06-25	1312926	ND
2014-06-25	1312927	ND
2014-06-25	1312928	ND
2014-06-25	1312929	ND
2014-06-25	1312930	ND
2014-06-25	1312931	ND
2014-12-03	1355129	ND
2014-12-03	1355130	ND
2014-12-03	1355131	ND
2014-12-03	1355132	ND
2014-12-03	1355133	ND
2014-12-03	1355134	ND
2014-12-03	1355129	ND
2014-12-03	1355130	ND
2014-12-03	1355131	ND
2014-12-03	1355132	ND
2014-12-03	1355133	ND
2014-12-03	1355134	ND
2015-03-24	1381708	ND
2015-03-24	1381712	ND
2015-03-24	1381713	ND
2015-03-24	1381714	ND
2015-03-24	1381715	ND
2015-03-24	1381716	ND
2015-03-24	1381708	ND
2015-03-24	1381712	ND
2015-03-24	1381713	ND
2015-03-24	1381714	ND
2015-03-24	1381715	ND
2015-03-24	1381716	ND
2015-06-23	1405172	ND
2015-06-23	1405174	ND
2015-06-23	1405175	ND
2015-06-23	1405176	ND
2015-06-23	1405177	ND
2015-06-23	1405178	ND
2015-06-23	1405172	ND
2015-06-23	1405174	ND
2015-06-23	1405175	ND
2015-06-23	1405176	ND
2015-06-23	1405177	ND
2015-06-23	1405178	ND
2015-09-24	1430267	ND
2015-09-24	1430270	ND
2015-09-24	1430271	ND
2015-09-24	1430272	ND
2015-09-24	1430273	ND
2015-09-24	1430274	ND
2015-09-24	1430267	ND
2015-09-24	1430270	ND
2015-09-24	1430271	ND
2015-09-24	1430272	ND
2015-09-24	1430273	ND
2015-09-24	1430274	ND
2015-12-09	1450373	ND
2015-12-09	1450374	ND
2015-12-09	1450375	ND
2015-12-09	1450376	ND
2015-12-09	1450377	ND
2015-12-09	1450378	ND
2015-12-09	1450373	ND
2015-12-09	1450374	ND
2015-12-09	1450375	ND
2015-12-09	1450376	ND
2015-12-09	1450377	ND
2015-12-09	1450378	ND
2016-03-22	1476807	ND
2016-03-22	1476808	ND
2016-03-22	1476809	ND
2016-03-22	1476810	ND
2016-03-22	1476811	ND
2016-03-22	1476812	ND
2016-03-22	1476807	ND
2016-03-22	1476808	ND
2016-03-22	1476809	ND
2016-03-22	1476810	ND
2016-03-22	1476811	ND
2016-03-22	1476812	ND
2016-06-27	1502670	ND
2016-06-27	1502671	ND
2016-06-27	1502672	ND
2016-06-27	1502673	ND
2016-06-27	1502674	ND
2016-06-27	1502675	ND
2016-06-27	1502670	ND
2016-06-27	1502671	ND
2016-06-27	1502672	ND
2016-06-27	1502673	ND
2016-06-27	1502674	ND
2016-06-27	1502675	ND
2016-09-27	1528120	ND
2016-09-27	1528121	ND
2016-09-27	1528122	ND
2016-09-27	1528123	ND
2016-09-27	1528124	ND
2016-09-27	1528125	ND
2016-09-27	1528120	ND
2016-09-27	1528121	ND
2016-09-27	1528122	ND
2016-09-27	1528123	ND
2016-09-27	1528124	ND
2016-09-27	1528125	ND
2016-12-19	1549784	ND
2016-12-19	1549785	ND
2016-12-19	1549786	ND
2016-12-19	1549787	ND
2016-12-19	1549788	ND
2016-12-19	1549789	ND
2016-12-19	1549784	ND
2016-12-19	1549785	ND
2016-12-19	1549786	ND
2016-12-19	1549787	ND
2016-12-19	1549788	ND
2016-12-19	1549789	ND
2017-03-02	35298738001	1.20 ppb
2017-03-02	35298738002	3.30 ppb
2017-03-02	35298738003	2.70 ppb
2017-03-02	35298738004	1.20 ppb
2017-03-02	35298738005	2.00 ppb
2017-03-02	35298738006	0.850 ppb
2017-03-02	35298738001	1.20 ppb
2017-03-02	35298738002	3.30 ppb
2017-03-02	35298738003	2.70 ppb
2017-03-02	35298738004	1.20 ppb
2017-03-02	35298738005	2.00 ppb
2017-03-02	35298738006	0.850 ppb
2017-06-01	35315802009	ND
2017-06-01	35315802010	0.680 ppb
2017-06-01	35315802011	3.40 ppb
2017-06-01	35315802012	2.30 ppb
2017-06-01	35315802013	1.70 ppb
2017-06-01	35315802014	8.10 ppb
2017-06-01	35315802009	ND
2017-06-01	35315802010	0.680 ppb
2017-06-01	35315802011	3.40 ppb
2017-06-01	35315802012	2.30 ppb
2017-06-01	35315802013	1.70 ppb
2017-06-01	35315802014	8.10 ppb
2017-09-07	35335094001	3.50 ppb
2017-09-07	35335094002	5.70 ppb
2017-09-07	35335094003	1.70 ppb
2017-09-07	35335094004	2.60 ppb
2017-09-07	35335094005	4.00 ppb
2017-09-07	35335094006	8.50 ppb
2017-09-07	35335094001	3.50 ppb
2017-09-07	35335094002	5.70 ppb
2017-09-07	35335094003	1.70 ppb
2017-09-07	35335094004	2.60 ppb
2017-09-07	35335094005	4.00 ppb
2017-09-07	35335094006	8.50 ppb
2017-12-06	35362366001	0.940 ppb
2017-12-06	35362366002	4.50 ppb
2017-12-06	35362366003	3.80 ppb
2017-12-06	35362366004	2.60 ppb
2017-12-06	35362366005	2.50 ppb
2017-12-06	35362366006	2.70 ppb
2017-12-06	35362366001	0.940 ppb
2017-12-06	35362366002	4.50 ppb
2017-12-06	35362366003	3.80 ppb
2017-12-06	35362366004	2.60 ppb
2017-12-06	35362366005	2.50 ppb
2017-12-06	35362366006	2.70 ppb
2018-03-07	35379177001	0.880 ppb
2018-03-07	35379177002	4.00 ppb
2018-03-07	35379177003	0.720 ppb
2018-03-07	35379177004	1.40 ppb
2018-03-07	35379177005	2.60 ppb
2018-03-07	35379177006	2.30 ppb
2018-03-07	35379177001	0.880 ppb
2018-03-07	35379177002	4.00 ppb
2018-03-07	35379177003	0.720 ppb
2018-03-07	35379177004	1.40 ppb
2018-03-07	35379177005	2.60 ppb
2018-03-07	35379177006	2.30 ppb
2018-06-13	35398741001	1.20 ppb
2018-06-13	35398741002	4.30 ppb
2018-06-13	35398741003	1.30 ppb
2018-06-13	35398741004	2.20 ppb
2018-06-13	35398741005	1.40 ppb
2018-06-13	35398741006	3.20 ppb
2018-06-13	35398741001	1.20 ppb
2018-06-13	35398741002	4.30 ppb
2018-06-13	35398741003	1.30 ppb
2018-06-13	35398741004	2.20 ppb
2018-06-13	35398741005	1.40 ppb
2018-06-13	35398741006	3.20 ppb
2018-09-04	35416221001	1.10 ppb
2018-09-04	35416221002	1.30 ppb
2018-09-04	35416221003	8.60 ppb
2018-09-04	35416226001	3.80 ppb
2018-09-04	35416226002	2.20 ppb
2018-09-04	35416226003	3.40 ppb
2018-09-04	35416221001	1.10 ppb
2018-09-04	35416221002	1.30 ppb
2018-09-04	35416221003	8.60 ppb
2018-09-04	35416226001	3.80 ppb
2018-09-04	35416226002	2.20 ppb
2018-09-04	35416226003	3.40 ppb
2018-12-12	35437374001	5.90 ppb
2018-12-12	35437374002	3.40 ppb
2018-12-12	35437374003	0.980 ppb
2018-12-12	35437374004	2.00 ppb
2018-12-12	35437374005	3.00 ppb
2018-12-12	35437374006	0.920 ppb
2018-12-12	35437374001	5.90 ppb
2018-12-12	35437374002	3.40 ppb
2018-12-12	35437374003	0.980 ppb
2018-12-12	35437374004	2.00 ppb
2018-12-12	35437374005	3.00 ppb
2018-12-12	35437374006	0.920 ppb
2019-03-11	35454715001	5.00 ppb
2019-03-11	35454715002	2.60 ppb
2019-03-11	35454716001	7.50 ppb
2019-03-11	35454716002	1.20 ppb
2019-03-11	35454716003	1.20 ppb
2019-03-11	35454715001	5.00 ppb
2019-03-11	35454715002	2.60 ppb
2019-03-11	35454716001	7.50 ppb
2019-03-11	35454716002	1.20 ppb
2019-03-11	35454716003	1.20 ppb
2019-03-14	35454715003	3.90 ppb
2019-03-14	35454715003	3.90 ppb
2019-06-03	35474282001	5.00 ppb
2019-06-03	35474282002	3.10 ppb
2019-06-03	35474282003	2.00 ppb
2019-06-03	35474284001	5.60 ppb
2019-06-03	35474284002	4.70 ppb
2019-06-03	35474284003	2.50 ppb
2019-06-03	35474282001	5.00 ppb
2019-06-03	35474282002	3.10 ppb
2019-06-03	35474282003	2.00 ppb
2019-06-03	35474284001	5.60 ppb
2019-06-03	35474284002	4.70 ppb
2019-06-03	35474284003	2.50 ppb
2019-09-03	35495824001	4.40 ppb
2019-09-03	35495831001	5.00 ppb
2019-09-03	35495831002	1.60 ppb
2019-09-03	35495831003	0.420 ppb
2019-09-03	35495824001	4.40 ppb
2019-09-03	35495831001	5.00 ppb
2019-09-03	35495831002	1.60 ppb
2019-09-03	35495831003	0.420 ppb
2019-09-26	35501131001	8.60 ppb
2019-09-26	35501131002	8.30 ppb
2019-09-26	35501131001	8.60 ppb
2019-09-26	35501131002	8.30 ppb
2019-12-02	35516981001	5.40 ppb
2019-12-02	35516981002	1.80 ppb
2019-12-02	35516981003	3.10 ppb
2019-12-02	35516986001	4.30 ppb
2019-12-02	35516986002	0.810 ppb
2019-12-02	35516986003	0.920 ppb
2019-12-02	35516981001	5.40 ppb
2019-12-02	35516981002	1.80 ppb
2019-12-02	35516981003	3.10 ppb
2019-12-02	35516986001	4.30 ppb
2019-12-02	35516986002	0.810 ppb
2019-12-02	35516986003	0.920 ppb