Dichloroacetic acid

City of Plaquemine 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)

170

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	1.44 ppb	32	30	ND - 2.00 ppb
2015	1.26 ppb	32	26	ND - 2.10 ppb
2016	2.26 ppb	32	32	1.40 ppb - 3.90 ppb
2017	2.52 ppb	32	20	ND - 12.4 ppb
2018	3.73 ppb	32	30	ND - 9.00 ppb
2019	2.99 ppb	32	32	1.90 ppb - 6.30 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
2014-02-28	680-99317-1	1.50 ppb
2014-02-28	680-99317-2	1.20 ppb
2014-02-28	680-99317-3	ND
2014-02-28	680-99317-4	1.20 ppb
2014-02-28	680-99317-1	1.50 ppb
2014-02-28	680-99317-2	1.20 ppb
2014-02-28	680-99317-3	ND
2014-02-28	680-99317-4	1.20 ppb
2014-05-05	680-101121-10	1.80 ppb
2014-05-05	680-101121-11	1.50 ppb
2014-05-05	680-101121-8	1.70 ppb
2014-05-05	680-101121-9	1.10 ppb
2014-05-05	680-101121-10	1.80 ppb
2014-05-05	680-101121-11	1.50 ppb
2014-05-05	680-101121-8	1.70 ppb
2014-05-05	680-101121-9	1.10 ppb
2014-08-05	680-103978-12	1.80 ppb
2014-08-05	680-103978-13	1.60 ppb
2014-08-05	680-103978-14	2.00 ppb
2014-08-05	680-103978-15	1.60 ppb
2014-08-05	680-103978-12	1.80 ppb
2014-08-05	680-103978-13	1.60 ppb
2014-08-05	680-103978-14	2.00 ppb
2014-08-05	680-103978-15	1.60 ppb
2014-11-11	680-107182-1	1.70 ppb
2014-11-11	680-107182-2	1.40 ppb
2014-11-11	680-107182-3	1.60 ppb
2014-11-11	680-107182-4	1.40 ppb
2014-11-11	680-107182-1	1.70 ppb
2014-11-11	680-107182-2	1.40 ppb
2014-11-11	680-107182-3	1.60 ppb
2014-11-11	680-107182-4	1.40 ppb
2015-02-12	680-109932-6	ND
2015-02-12	680-109932-7	2.10 ppb
2015-02-12	680-109932-8	1.20 ppb
2015-02-12	680-109932-9	1.30 ppb
2015-02-12	680-109932-6	ND
2015-02-12	680-109932-7	2.10 ppb
2015-02-12	680-109932-8	1.20 ppb
2015-02-12	680-109932-9	1.30 ppb
2015-05-05	680-112230-6	1.60 ppb
2015-05-05	680-112230-7	1.70 ppb
2015-05-05	680-112230-8	ND
2015-05-05	680-112230-9	1.10 ppb
2015-05-05	680-112230-6	1.60 ppb
2015-05-05	680-112230-7	1.70 ppb
2015-05-05	680-112230-8	ND
2015-05-05	680-112230-9	1.10 ppb
2015-08-04	680-115240-10	1.70 ppb
2015-08-04	680-115240-11	1.80 ppb
2015-08-04	680-115240-8	1.80 ppb
2015-08-04	680-115240-9	1.40 ppb
2015-08-04	680-115240-10	1.70 ppb
2015-08-04	680-115240-11	1.80 ppb
2015-08-04	680-115240-8	1.80 ppb
2015-08-04	680-115240-9	1.40 ppb
2015-11-10	680-118907-1	ND
2015-11-10	680-118907-2	1.50 ppb
2015-11-10	680-118907-3	1.60 ppb
2015-11-10	680-118907-4	1.40 ppb
2015-11-10	680-118907-1	ND
2015-11-10	680-118907-2	1.50 ppb
2015-11-10	680-118907-3	1.60 ppb
2015-11-10	680-118907-4	1.40 ppb
2016-02-16	680-121961-1	3.90 ppb
2016-02-16	680-121961-2	1.90 ppb
2016-02-16	680-121961-3	3.50 ppb
2016-02-16	680-121961-4	1.80 ppb
2016-02-16	680-121961-1	3.90 ppb
2016-02-16	680-121961-2	1.90 ppb
2016-02-16	680-121961-3	3.50 ppb
2016-02-16	680-121961-4	1.80 ppb
2016-05-26	680-125729-5	2.00 ppb
2016-05-26	680-125729-6	1.60 ppb
2016-05-26	680-125729-7	2.20 ppb
2016-05-26	680-125729-8	2.40 ppb
2016-05-26	680-125729-5	2.00 ppb
2016-05-26	680-125729-6	1.60 ppb
2016-05-26	680-125729-7	2.20 ppb
2016-05-26	680-125729-8	2.40 ppb
2016-08-08	680-128482-10	3.20 ppb
2016-08-08	680-128482-7	2.60 ppb
2016-08-08	680-128482-8	1.90 ppb
2016-08-08	680-128482-9	3.00 ppb
2016-08-08	680-128482-10	3.20 ppb
2016-08-08	680-128482-7	2.60 ppb
2016-08-08	680-128482-8	1.90 ppb
2016-08-08	680-128482-9	3.00 ppb
2016-11-08	680-131949-1	1.40 ppb
2016-11-08	680-131949-2	1.60 ppb
2016-11-08	680-131949-3	1.60 ppb
2016-11-08	680-131949-4	1.60 ppb
2016-11-08	680-131949-1	1.40 ppb
2016-11-08	680-131949-2	1.60 ppb
2016-11-08	680-131949-3	1.60 ppb
2016-11-08	680-131949-4	1.60 ppb
2017-02-03	35292963007	2.60 ppb
2017-02-03	35292963008	ND
2017-02-03	35292963009	ND
2017-02-03	35292963010	ND
2017-02-03	35292963007	2.60 ppb
2017-02-03	35292963008	ND
2017-02-03	35292963009	ND
2017-02-03	35292963010	ND
2017-05-19	35313432005	2.00 ppb
2017-05-19	35313432006	ND
2017-05-19	35313432007	ND
2017-05-19	35313432008	ND
2017-05-19	35313432005	2.00 ppb
2017-05-19	35313432006	ND
2017-05-19	35313432007	ND
2017-05-19	35313432008	ND
2017-08-17	35331018010	2.50 ppb
2017-08-17	35331018010	2.50 ppb
2017-09-25	35338478001	1.10 ppb
2017-09-25	35338478002	3.00 ppb
2017-09-25	35338478003	1.90 ppb
2017-09-25	35338478001	1.10 ppb
2017-09-25	35338478002	3.00 ppb
2017-09-25	35338478003	1.90 ppb
2017-11-16	35349110001	5.10 ppb
2017-11-16	35349110002	12.4 ppb
2017-11-16	35349110003	7.10 ppb
2017-11-16	35349110004	2.60 ppb
2017-11-16	35349110001	5.10 ppb
2017-11-16	35349110002	12.4 ppb
2017-11-16	35349110003	7.10 ppb
2017-11-16	35349110004	2.60 ppb
2018-02-15	35374877001	2.70 ppb
2018-02-15	35374877002	ND
2018-02-15	35374877003	2.50 ppb
2018-02-15	35374877004	4.70 ppb
2018-02-15	35374877001	2.70 ppb
2018-02-15	35374877002	ND
2018-02-15	35374877003	2.50 ppb
2018-02-15	35374877004	4.70 ppb
2018-05-10	35391870001	4.20 ppb
2018-05-10	35391870002	4.50 ppb
2018-05-10	35391870003	5.10 ppb
2018-05-10	35391870004	7.40 ppb
2018-05-10	35391870001	4.20 ppb
2018-05-10	35391870002	4.50 ppb
2018-05-10	35391870003	5.10 ppb
2018-05-10	35391870004	7.40 ppb
2018-08-09	35410445001	2.30 ppb
2018-08-09	35410445002	2.40 ppb
2018-08-09	35410445003	3.50 ppb
2018-08-09	35410445004	9.00 ppb
2018-08-09	35410445001	2.30 ppb
2018-08-09	35410445002	2.40 ppb
2018-08-09	35410445003	3.50 ppb
2018-08-09	35410445004	9.00 ppb
2018-11-08	35430217001	3.10 ppb
2018-11-08	35430217002	3.20 ppb
2018-11-08	35430217003	2.40 ppb
2018-11-08	35430217004	2.60 ppb
2018-11-08	35430217001	3.10 ppb
2018-11-08	35430217002	3.20 ppb
2018-11-08	35430217003	2.40 ppb
2018-11-08	35430217004	2.60 ppb
2019-02-14	35448459001	6.30 ppb
2019-02-14	35448459002	5.00 ppb
2019-02-14	35448459003	4.10 ppb
2019-02-14	35448459004	3.80 ppb
2019-02-14	35448459001	6.30 ppb
2019-02-14	35448459002	5.00 ppb
2019-02-14	35448459003	4.10 ppb
2019-02-14	35448459004	3.80 ppb
2019-05-16	35470498001	2.20 ppb
2019-05-16	35470498002	1.90 ppb
2019-05-16	35470498003	2.10 ppb
2019-05-16	35470498004	2.00 ppb
2019-05-16	35470498001	2.20 ppb
2019-05-16	35470498002	1.90 ppb
2019-05-16	35470498003	2.10 ppb
2019-05-16	35470498004	2.00 ppb
2019-08-01	35486877001	2.80 ppb
2019-08-01	35486877002	2.50 ppb
2019-08-01	35486877003	2.60 ppb
2019-08-01	35486877004	4.20 ppb
2019-08-01	35486877001	2.80 ppb
2019-08-01	35486877002	2.50 ppb
2019-08-01	35486877003	2.60 ppb
2019-08-01	35486877004	4.20 ppb
2019-11-05	35510878001	1.90 ppb
2019-11-05	35510878002	1.90 ppb
2019-11-05	35510878003	2.50 ppb
2019-11-05	35510878004	2.00 ppb
2019-11-05	35510878001	1.90 ppb
2019-11-05	35510878002	1.90 ppb
2019-11-05	35510878003	2.50 ppb
2019-11-05	35510878004	2.00 ppb