Dichloroacetic acid

Village Water System

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
2013	N/A	0	0	N/A
2014	0.813 ppb	32	2	ND - 13.0 ppb
2015	0.244 ppb	32	6	ND - 1.40 ppb
2016	0.475 ppb	32	12	ND - 1.50 ppb
2017	0.692 ppb	32	14	ND - 3.90 ppb
2018	0.148 ppb	32	6	ND - 0.860 ppb
2019	0.822 ppb	32	24	ND - 4.20 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
2014-02-25	L0040099-01	ND
2014-02-25	L0040099-02	ND
2014-02-25	L0040100-01	ND
2014-02-25	L0040100-02	ND
2014-02-25	L0040099-01	ND
2014-02-25	L0040099-02	ND
2014-02-25	L0040100-01	ND
2014-02-25	L0040100-02	ND
2014-05-14	L0043099-07	ND
2014-05-14	L0043099-08	ND
2014-05-14	L0043099-11	13.0 ppb
2014-05-14	L0043099-12	ND
2014-05-14	L0043099-07	ND
2014-05-14	L0043099-08	ND
2014-05-14	L0043099-11	13.0 ppb
2014-05-14	L0043099-12	ND
2014-08-14	35150984001	ND
2014-08-14	35150984002	ND
2014-08-14	35150984003	ND
2014-08-14	35150984004	ND
2014-08-14	35150984001	ND
2014-08-14	35150984002	ND
2014-08-14	35150984003	ND
2014-08-14	35150984004	ND
2014-11-03	L0050159-01	ND
2014-11-03	L0050159-02	ND
2014-11-03	L0050159-03	ND
2014-11-03	L0050159-04	ND
2014-11-03	L0050159-01	ND
2014-11-03	L0050159-02	ND
2014-11-03	L0050159-03	ND
2014-11-03	L0050159-04	ND
2015-02-11	LA3580-1	ND
2015-02-11	LA3580-2	ND
2015-02-11	LA3580-3	ND
2015-02-11	LA3580-4	ND
2015-02-11	LA3580-1	ND
2015-02-11	LA3580-2	ND
2015-02-11	LA3580-3	ND
2015-02-11	LA3580-4	ND
2015-05-22	35190128001	1.40 ppb
2015-05-22	35190128002	ND
2015-05-22	35190128003	ND
2015-05-22	35190128004	ND
2015-05-22	35190128001	1.40 ppb
2015-05-22	35190128002	ND
2015-05-22	35190128003	ND
2015-05-22	35190128004	ND
2015-08-17	35203449001	ND
2015-08-17	35203449002	ND
2015-08-17	35203449003	1.40 ppb
2015-08-17	35203449004	ND
2015-08-17	35203449001	ND
2015-08-17	35203449002	ND
2015-08-17	35203449003	1.40 ppb
2015-08-17	35203449004	ND
2015-11-06	35215875001	ND
2015-11-06	35215875002	ND
2015-11-06	35215875003	1.10 ppb
2015-11-06	35215875004	ND
2015-11-06	35215875001	ND
2015-11-06	35215875002	ND
2015-11-06	35215875003	1.10 ppb
2015-11-06	35215875004	ND
2016-02-08	35229107001	ND
2016-02-08	35229107002	ND
2016-02-08	35229107003	ND
2016-02-08	35229107004	ND
2016-02-08	35229107001	ND
2016-02-08	35229107002	ND
2016-02-08	35229107003	ND
2016-02-08	35229107004	ND
2016-05-20	LA20898-1	ND
2016-05-20	LA20898-2	ND
2016-05-20	LA20898-3	1.40 ppb
2016-05-20	LA20898-4	ND
2016-05-20	LA20898-1	ND
2016-05-20	LA20898-2	ND
2016-05-20	LA20898-3	1.40 ppb
2016-05-20	LA20898-4	ND
2016-08-16	LA24259-1	1.20 ppb
2016-08-16	LA24259-2	1.20 ppb
2016-08-16	LA24259-3	1.20 ppb
2016-08-16	LA24259-4	1.10 ppb
2016-08-16	LA24259-1	1.20 ppb
2016-08-16	LA24259-2	1.20 ppb
2016-08-16	LA24259-3	1.20 ppb
2016-08-16	LA24259-4	1.10 ppb
2016-11-16	LA27743-1	1.50 ppb
2016-11-16	LA27743-2	ND
2016-11-16	LA27743-3	ND
2016-11-16	LA27743-4	ND
2016-11-16	LA27743-1	1.50 ppb
2016-11-16	LA27743-2	ND
2016-11-16	LA27743-3	ND
2016-11-16	LA27743-4	ND
2017-02-22	35296880007	ND
2017-02-22	35296880008	ND
2017-02-22	35296880009	ND
2017-02-22	35296880010	ND
2017-02-22	35296880007	ND
2017-02-22	35296880008	ND
2017-02-22	35296880009	ND
2017-02-22	35296880010	ND
2017-05-19	35313429001	0.980 ppb
2017-05-19	35313429002	1.30 ppb
2017-05-19	35313429003	ND
2017-05-19	35313429004	ND
2017-05-19	35313429001	0.980 ppb
2017-05-19	35313429002	1.30 ppb
2017-05-19	35313429003	ND
2017-05-19	35313429004	ND
2017-08-23	35332706027	0.760 ppb
2017-08-23	35332706028	ND
2017-08-23	35332706029	0.380 ppb
2017-08-23	35332706030	0.350 ppb
2017-08-23	35332706027	0.760 ppb
2017-08-23	35332706028	ND
2017-08-23	35332706029	0.380 ppb
2017-08-23	35332706030	0.350 ppb
2017-11-28	35350762001	3.40 ppb
2017-11-28	35350762002	ND
2017-11-28	35350762003	ND
2017-11-28	35350762004	3.90 ppb
2017-11-28	35350762001	3.40 ppb
2017-11-28	35350762002	ND
2017-11-28	35350762003	ND
2017-11-28	35350762004	3.90 ppb
2018-02-12	35373899001	ND
2018-02-12	35373899002	ND
2018-02-12	35373899003	ND
2018-02-12	35373899004	ND
2018-02-12	35373899001	ND
2018-02-12	35373899002	ND
2018-02-12	35373899003	ND
2018-02-12	35373899004	ND
2018-05-10	35392013001	0.810 ppb
2018-05-10	35392013002	0.700 ppb
2018-05-10	35392013003	ND
2018-05-10	35392013004	ND
2018-05-10	35392013001	0.810 ppb
2018-05-10	35392013002	0.700 ppb
2018-05-10	35392013003	ND
2018-05-10	35392013004	ND
2018-08-15	35411592001	ND
2018-08-15	35411592002	ND
2018-08-15	35411592003	ND
2018-08-15	35411592004	ND
2018-08-15	35411592001	ND
2018-08-15	35411592002	ND
2018-08-15	35411592003	ND
2018-08-15	35411592004	ND
2018-11-16	35432197001	ND
2018-11-16	35432197002	ND
2018-11-16	35432197003	0.860 ppb
2018-11-16	35432197004	ND
2018-11-16	35432197001	ND
2018-11-16	35432197002	ND
2018-11-16	35432197003	0.860 ppb
2018-11-16	35432197004	ND
2019-02-21	35450236001	4.20 ppb
2019-02-21	35450236002	0.590 ppb
2019-02-21	35450236003	1.80 ppb
2019-02-21	35450236004	0.600 ppb
2019-02-21	35450236001	4.20 ppb
2019-02-21	35450236002	0.590 ppb
2019-02-21	35450236003	1.80 ppb
2019-02-21	35450236004	0.600 ppb
2019-05-17	35469507002	0.880 ppb
2019-05-17	35469507003	0.930 ppb
2019-05-17	35469507004	1.000 ppb
2019-05-17	35469507002	0.880 ppb
2019-05-17	35469507003	0.930 ppb
2019-05-17	35469507004	1.000 ppb
2019-05-23	35470841001	0.440 ppb
2019-05-23	35470841001	0.440 ppb
2019-08-23	35492999001	ND
2019-08-23	35492999002	1.30 ppb
2019-08-23	35492999003	ND
2019-08-23	35492999004	ND
2019-08-23	35492999001	ND
2019-08-23	35492999002	1.30 ppb
2019-08-23	35492999003	ND
2019-08-23	35492999004	ND
2019-11-14	35512807001	0.650 ppb
2019-11-14	35512807002	ND
2019-11-14	35512807003	0.240 ppb
2019-11-14	35512807004	0.520 ppb
2019-11-14	35512807001	0.650 ppb
2019-11-14	35512807002	ND
2019-11-14	35512807003	0.240 ppb
2019-11-14	35512807004	0.520 ppb