Trichloroacetic acid

Sabine Parish Water District 1

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

134

Samples

Samples exceeding legal limit (MCL)

100

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	1.93 ppb	24	8	ND - 7.30 ppb
2015	3.50 ppb	16	16	2.50 ppb - 4.90 ppb
2016	ND	16	0	ND
2017	5.46 ppb	16	16	4.60 ppb - 6.50 ppb
2018	4.83 ppb	28	28	0.870 ppb - 7.40 ppb
2019	4.15 ppb	34	32	ND - 5.60 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
2014-03-25	1288115	ND
2014-03-25	1288116	ND
2014-03-25	1288117	ND
2014-03-25	1288118	ND
2014-03-25	1288115	ND
2014-03-25	1288116	ND
2014-03-25	1288117	ND
2014-03-25	1288118	ND
2014-06-10	1309390	ND
2014-06-10	1309391	ND
2014-06-10	1309392	ND
2014-06-10	1309393	ND
2014-06-10	1309390	ND
2014-06-10	1309391	ND
2014-06-10	1309392	ND
2014-06-10	1309393	ND
2014-09-12	L0048225-01	7.30 ppb
2014-09-12	L0048225-02	7.00 ppb
2014-09-12	L0048225-01	7.30 ppb
2014-09-12	L0048225-02	7.00 ppb
2014-12-03	L0051333-01	4.90 ppb
2014-12-03	L0051333-02	3.90 ppb
2014-12-03	L0051333-01	4.90 ppb
2014-12-03	L0051333-02	3.90 ppb
2015-03-12	LA4648-1	2.80 ppb
2015-03-12	LA4648-2	3.30 ppb
2015-03-12	LA4648-1	2.80 ppb
2015-03-12	LA4648-2	3.30 ppb
2015-06-08	35192252001	4.90 ppb
2015-06-08	35192252002	4.30 ppb
2015-06-08	35192252001	4.90 ppb
2015-06-08	35192252002	4.30 ppb
2015-09-11	LA11618-1	2.60 ppb
2015-09-11	LA11618-2	2.50 ppb
2015-09-11	LA11618-1	2.60 ppb
2015-09-11	LA11618-2	2.50 ppb
2015-12-02	LA14709-1	4.00 ppb
2015-12-02	LA14709-2	3.60 ppb
2015-12-02	LA14709-1	4.00 ppb
2015-12-02	LA14709-2	3.60 ppb
2016-03-15	1475137	ND
2016-03-15	1475138	ND
2016-03-15	1475137	ND
2016-03-15	1475138	ND
2016-06-14	1499821	ND
2016-06-14	1499822	ND
2016-06-14	1499821	ND
2016-06-14	1499822	ND
2016-09-20	1526544	ND
2016-09-20	1526545	ND
2016-09-20	1526544	ND
2016-09-20	1526545	ND
2016-12-14	1548531	ND
2016-12-14	1548532	ND
2016-12-14	1548531	ND
2016-12-14	1548532	ND
2017-03-02	35298741006	5.80 ppb
2017-03-02	35298741007	5.40 ppb
2017-03-02	35298741006	5.80 ppb
2017-03-02	35298741007	5.40 ppb
2017-06-15	35318967001	5.00 ppb
2017-06-15	35318967002	4.60 ppb
2017-06-15	35318967001	5.00 ppb
2017-06-15	35318967002	4.60 ppb
2017-09-14	35335848001	5.30 ppb
2017-09-14	35335848002	5.90 ppb
2017-09-14	35335848001	5.30 ppb
2017-09-14	35335848002	5.90 ppb
2017-12-19	35364960001	6.50 ppb
2017-12-19	35364960002	5.20 ppb
2017-12-19	35364960001	6.50 ppb
2017-12-19	35364960002	5.20 ppb
2018-03-14	35380529001	4.30 ppb
2018-03-14	35380529002	3.90 ppb
2018-03-14	35380529001	4.30 ppb
2018-03-14	35380529002	3.90 ppb
2018-06-18	35399478001	7.10 ppb
2018-06-18	35399478002	4.00 ppb
2018-06-18	35399478001	7.10 ppb
2018-06-18	35399478002	4.00 ppb
2018-09-20	35419444001	5.30 ppb
2018-09-20	35419444002	5.30 ppb
2018-09-20	35419444003	5.40 ppb
2018-09-20	35419444004	6.70 ppb
2018-09-20	35419444005	7.40 ppb
2018-09-20	35419444001	5.30 ppb
2018-09-20	35419444002	5.30 ppb
2018-09-20	35419444003	5.40 ppb
2018-09-20	35419444004	6.70 ppb
2018-09-20	35419444005	7.40 ppb
2018-12-19	35438673001	0.980 ppb
2018-12-19	35438673002	0.870 ppb
2018-12-19	35438673003	5.10 ppb
2018-12-19	35438673004	5.70 ppb
2018-12-19	35438673005	5.50 ppb
2018-12-19	35438673001	0.980 ppb
2018-12-19	35438673002	0.870 ppb
2018-12-19	35438673003	5.10 ppb
2018-12-19	35438673004	5.70 ppb
2018-12-19	35438673005	5.50 ppb
2019-03-25	35457419001	4.70 ppb
2019-03-25	35457419002	4.40 ppb
2019-03-25	35457419003	4.60 ppb
2019-03-25	35457419004	5.20 ppb
2019-03-25	35457419005	5.60 ppb
2019-03-25	35457419001	4.70 ppb
2019-03-25	35457419002	4.40 ppb
2019-03-25	35457419003	4.60 ppb
2019-03-25	35457419004	5.20 ppb
2019-03-25	35457419005	5.60 ppb
2019-06-17	35476842001	4.40 ppb
2019-06-17	35476842002	4.20 ppb
2019-06-17	35476842003	4.60 ppb
2019-06-17	35476842004	5.10 ppb
2019-06-17	35476842005	4.90 ppb
2019-06-17	35476842001	4.40 ppb
2019-06-17	35476842002	4.20 ppb
2019-06-17	35476842003	4.60 ppb
2019-06-17	35476842004	5.10 ppb
2019-06-17	35476842005	4.90 ppb
2019-09-23	35500241001	4.10 ppb
2019-09-23	35500241002	4.20 ppb
2019-09-23	35500241003	4.20 ppb
2019-09-23	35500241004	4.90 ppb
2019-09-23	35500241005	5.10 ppb
2019-09-23	35500241001	4.10 ppb
2019-09-23	35500241002	4.20 ppb
2019-09-23	35500241003	4.20 ppb
2019-09-23	35500241004	4.90 ppb
2019-09-23	35500241005	5.10 ppb
2019-12-16	35519741001	ND
2019-12-16	35519741002	0.390 ppb
2019-12-16	35519741001	ND
2019-12-16	35519741002	0.390 ppb