Trichloroacetic acid

City of Plaquemine Water System

Trichloroacetic 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)

152

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.859 ppb	32	30	ND - 1.40 ppb
2015	0.703 ppb	32	28	ND - 1.10 ppb
2016	0.804 ppb	32	22	ND - 2.20 ppb
2017	0.215 ppb	32	8	ND - 1.40 ppb
2018	0.923 ppb	32	32	0.660 ppb - 1.30 ppb
2019	0.804 ppb	32	32	0.460 ppb - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic 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	1.30 ppb
2014-02-28	680-99317-2	0.650 ppb
2014-02-28	680-99317-3	0.760 ppb
2014-02-28	680-99317-4	0.780 ppb
2014-02-28	680-99317-1	1.30 ppb
2014-02-28	680-99317-2	0.650 ppb
2014-02-28	680-99317-3	0.760 ppb
2014-02-28	680-99317-4	0.780 ppb
2014-05-05	680-101121-10	1.000 ppb
2014-05-05	680-101121-11	1.20 ppb
2014-05-05	680-101121-8	0.940 ppb
2014-05-05	680-101121-9	0.730 ppb
2014-05-05	680-101121-10	1.000 ppb
2014-05-05	680-101121-11	1.20 ppb
2014-05-05	680-101121-8	0.940 ppb
2014-05-05	680-101121-9	0.730 ppb
2014-08-05	680-103978-12	0.550 ppb
2014-08-05	680-103978-13	ND
2014-08-05	680-103978-14	0.910 ppb
2014-08-05	680-103978-15	1.40 ppb
2014-08-05	680-103978-12	0.550 ppb
2014-08-05	680-103978-13	ND
2014-08-05	680-103978-14	0.910 ppb
2014-08-05	680-103978-15	1.40 ppb
2014-11-11	680-107182-1	0.830 ppb
2014-11-11	680-107182-2	0.770 ppb
2014-11-11	680-107182-3	0.930 ppb
2014-11-11	680-107182-4	1.000 ppb
2014-11-11	680-107182-1	0.830 ppb
2014-11-11	680-107182-2	0.770 ppb
2014-11-11	680-107182-3	0.930 ppb
2014-11-11	680-107182-4	1.000 ppb
2015-02-12	680-109932-6	ND
2015-02-12	680-109932-7	0.500 ppb
2015-02-12	680-109932-8	0.600 ppb
2015-02-12	680-109932-9	0.730 ppb
2015-02-12	680-109932-6	ND
2015-02-12	680-109932-7	0.500 ppb
2015-02-12	680-109932-8	0.600 ppb
2015-02-12	680-109932-9	0.730 ppb
2015-05-05	680-112230-6	0.470 ppb
2015-05-05	680-112230-7	0.710 ppb
2015-05-05	680-112230-8	1.000 ppb
2015-05-05	680-112230-9	0.850 ppb
2015-05-05	680-112230-6	0.470 ppb
2015-05-05	680-112230-7	0.710 ppb
2015-05-05	680-112230-8	1.000 ppb
2015-05-05	680-112230-9	0.850 ppb
2015-08-04	680-115240-10	0.860 ppb
2015-08-04	680-115240-11	0.900 ppb
2015-08-04	680-115240-8	0.890 ppb
2015-08-04	680-115240-9	1.10 ppb
2015-08-04	680-115240-10	0.860 ppb
2015-08-04	680-115240-11	0.900 ppb
2015-08-04	680-115240-8	0.890 ppb
2015-08-04	680-115240-9	1.10 ppb
2015-11-10	680-118907-1	0.780 ppb
2015-11-10	680-118907-2	ND
2015-11-10	680-118907-3	0.990 ppb
2015-11-10	680-118907-4	0.860 ppb
2015-11-10	680-118907-1	0.780 ppb
2015-11-10	680-118907-2	ND
2015-11-10	680-118907-3	0.990 ppb
2015-11-10	680-118907-4	0.860 ppb
2016-02-16	680-121961-1	2.20 ppb
2016-02-16	680-121961-2	ND
2016-02-16	680-121961-3	1.40 ppb
2016-02-16	680-121961-4	ND
2016-02-16	680-121961-1	2.20 ppb
2016-02-16	680-121961-2	ND
2016-02-16	680-121961-3	1.40 ppb
2016-02-16	680-121961-4	ND
2016-05-26	680-125729-5	ND
2016-05-26	680-125729-6	ND
2016-05-26	680-125729-7	1.40 ppb
2016-05-26	680-125729-8	1.30 ppb
2016-05-26	680-125729-5	ND
2016-05-26	680-125729-6	ND
2016-05-26	680-125729-7	1.40 ppb
2016-05-26	680-125729-8	1.30 ppb
2016-08-08	680-128482-10	ND
2016-08-08	680-128482-7	1.000 ppb
2016-08-08	680-128482-8	0.850 ppb
2016-08-08	680-128482-9	0.960 ppb
2016-08-08	680-128482-10	ND
2016-08-08	680-128482-7	1.000 ppb
2016-08-08	680-128482-8	0.850 ppb
2016-08-08	680-128482-9	0.960 ppb
2016-11-08	680-131949-1	0.780 ppb
2016-11-08	680-131949-2	1.30 ppb
2016-11-08	680-131949-3	0.760 ppb
2016-11-08	680-131949-4	0.910 ppb
2016-11-08	680-131949-1	0.780 ppb
2016-11-08	680-131949-2	1.30 ppb
2016-11-08	680-131949-3	0.760 ppb
2016-11-08	680-131949-4	0.910 ppb
2017-02-03	35292963007	ND
2017-02-03	35292963008	ND
2017-02-03	35292963009	ND
2017-02-03	35292963010	ND
2017-02-03	35292963007	ND
2017-02-03	35292963008	ND
2017-02-03	35292963009	ND
2017-02-03	35292963010	ND
2017-05-19	35313432005	ND
2017-05-19	35313432006	ND
2017-05-19	35313432007	ND
2017-05-19	35313432008	ND
2017-05-19	35313432005	ND
2017-05-19	35313432006	ND
2017-05-19	35313432007	ND
2017-05-19	35313432008	ND
2017-08-17	35331018010	ND
2017-08-17	35331018010	ND
2017-09-25	35338478001	0.550 ppb
2017-09-25	35338478002	ND
2017-09-25	35338478003	ND
2017-09-25	35338478001	0.550 ppb
2017-09-25	35338478002	ND
2017-09-25	35338478003	ND
2017-11-16	35349110001	0.800 ppb
2017-11-16	35349110002	1.40 ppb
2017-11-16	35349110003	0.690 ppb
2017-11-16	35349110004	ND
2017-11-16	35349110001	0.800 ppb
2017-11-16	35349110002	1.40 ppb
2017-11-16	35349110003	0.690 ppb
2017-11-16	35349110004	ND
2018-02-15	35374877001	1.30 ppb
2018-02-15	35374877002	0.750 ppb
2018-02-15	35374877003	0.660 ppb
2018-02-15	35374877004	0.730 ppb
2018-02-15	35374877001	1.30 ppb
2018-02-15	35374877002	0.750 ppb
2018-02-15	35374877003	0.660 ppb
2018-02-15	35374877004	0.730 ppb
2018-05-10	35391870001	1.30 ppb
2018-05-10	35391870002	0.730 ppb
2018-05-10	35391870003	0.820 ppb
2018-05-10	35391870004	1.30 ppb
2018-05-10	35391870001	1.30 ppb
2018-05-10	35391870002	0.730 ppb
2018-05-10	35391870003	0.820 ppb
2018-05-10	35391870004	1.30 ppb
2018-08-09	35410445001	0.760 ppb
2018-08-09	35410445002	0.660 ppb
2018-08-09	35410445003	1.20 ppb
2018-08-09	35410445004	1.30 ppb
2018-08-09	35410445001	0.760 ppb
2018-08-09	35410445002	0.660 ppb
2018-08-09	35410445003	1.20 ppb
2018-08-09	35410445004	1.30 ppb
2018-11-08	35430217001	0.840 ppb
2018-11-08	35430217002	0.790 ppb
2018-11-08	35430217003	0.660 ppb
2018-11-08	35430217004	0.960 ppb
2018-11-08	35430217001	0.840 ppb
2018-11-08	35430217002	0.790 ppb
2018-11-08	35430217003	0.660 ppb
2018-11-08	35430217004	0.960 ppb
2019-02-14	35448459001	0.980 ppb
2019-02-14	35448459002	1.20 ppb
2019-02-14	35448459003	1.10 ppb
2019-02-14	35448459004	1.10 ppb
2019-02-14	35448459001	0.980 ppb
2019-02-14	35448459002	1.20 ppb
2019-02-14	35448459003	1.10 ppb
2019-02-14	35448459004	1.10 ppb
2019-05-16	35470498001	0.700 ppb
2019-05-16	35470498002	0.680 ppb
2019-05-16	35470498003	0.670 ppb
2019-05-16	35470498004	0.660 ppb
2019-05-16	35470498001	0.700 ppb
2019-05-16	35470498002	0.680 ppb
2019-05-16	35470498003	0.670 ppb
2019-05-16	35470498004	0.660 ppb
2019-08-01	35486877001	0.460 ppb
2019-08-01	35486877002	0.510 ppb
2019-08-01	35486877003	0.590 ppb
2019-08-01	35486877004	0.690 ppb
2019-08-01	35486877001	0.460 ppb
2019-08-01	35486877002	0.510 ppb
2019-08-01	35486877003	0.590 ppb
2019-08-01	35486877004	0.690 ppb
2019-11-05	35510878001	0.910 ppb
2019-11-05	35510878002	0.860 ppb
2019-11-05	35510878003	0.890 ppb
2019-11-05	35510878004	0.860 ppb
2019-11-05	35510878001	0.910 ppb
2019-11-05	35510878002	0.860 ppb
2019-11-05	35510878003	0.890 ppb
2019-11-05	35510878004	0.860 ppb