Trichloroacetic acid

City of Abbeville 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)

112

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.938 ppb	32	14	ND - 2.90 ppb
2015	1.20 ppb	32	16	ND - 4.40 ppb
2016	0.0500 ppb	32	2	ND - 0.800 ppb
2017	0.422 ppb	32	16	ND - 1.30 ppb
2018	1.71 ppb	32	32	0.680 ppb - 7.20 ppb
2019	1.11 ppb	32	32	0.300 ppb - 2.20 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
2014-03-06	L0040455-01	2.10 ppb
2014-03-06	L0040456-01	1.50 ppb
2014-03-06	L0040457-01	1.60 ppb
2014-03-06	L0040460-01	1.70 ppb
2014-03-06	L0040455-01	2.10 ppb
2014-03-06	L0040456-01	1.50 ppb
2014-03-06	L0040457-01	1.60 ppb
2014-03-06	L0040460-01	1.70 ppb
2014-06-04	L0043886-01	ND
2014-06-04	L0043890-01	2.40 ppb
2014-06-04	L0043893-01	2.90 ppb
2014-06-04	L0043894-01	2.80 ppb
2014-06-04	L0043886-01	ND
2014-06-04	L0043890-01	2.40 ppb
2014-06-04	L0043893-01	2.90 ppb
2014-06-04	L0043894-01	2.80 ppb
2014-09-02	L0047659-01	ND
2014-09-02	L0047661-01	ND
2014-09-02	L0047664-01	ND
2014-09-02	L0047668-01	ND
2014-09-02	L0047659-01	ND
2014-09-02	L0047661-01	ND
2014-09-02	L0047664-01	ND
2014-09-02	L0047668-01	ND
2014-12-02	L0051423-01	ND
2014-12-02	L0051424-01	ND
2014-12-02	L0051425-01	ND
2014-12-02	L0051426-01	ND
2014-12-02	L0051423-01	ND
2014-12-02	L0051424-01	ND
2014-12-02	L0051425-01	ND
2014-12-02	L0051426-01	ND
2015-03-03	LA4281-1	ND
2015-03-03	LA4286-1	ND
2015-03-03	LA4287-1	ND
2015-03-03	LA4288-1	ND
2015-03-03	LA4281-1	ND
2015-03-03	LA4286-1	ND
2015-03-03	LA4287-1	ND
2015-03-03	LA4288-1	ND
2015-06-02	LA7809-1	3.30 ppb
2015-06-02	LA7810-1	4.30 ppb
2015-06-02	LA7811-1	3.10 ppb
2015-06-02	LA7812-1	4.40 ppb
2015-06-02	LA7809-1	3.30 ppb
2015-06-02	LA7810-1	4.30 ppb
2015-06-02	LA7811-1	3.10 ppb
2015-06-02	LA7812-1	4.40 ppb
2015-09-01	LA11190-1	1.10 ppb
2015-09-01	LA11191-1	ND
2015-09-01	LA11192-1	0.860 ppb
2015-09-01	LA11193-1	1.30 ppb
2015-09-01	LA11190-1	1.10 ppb
2015-09-01	LA11191-1	ND
2015-09-01	LA11192-1	0.860 ppb
2015-09-01	LA11193-1	1.30 ppb
2015-12-03	LA14734-1	ND
2015-12-03	LA14735-1	ND
2015-12-03	LA14737-1	0.890 ppb
2015-12-03	LA14738-1	ND
2015-12-03	LA14734-1	ND
2015-12-03	LA14735-1	ND
2015-12-03	LA14737-1	0.890 ppb
2015-12-03	LA14738-1	ND
2016-03-01	LA17907-1	ND
2016-03-01	LA17908-1	ND
2016-03-01	LA17909-1	ND
2016-03-01	LA17910-1	ND
2016-03-01	LA17907-1	ND
2016-03-01	LA17908-1	ND
2016-03-01	LA17909-1	ND
2016-03-01	LA17910-1	ND
2016-06-01	LA21251-1	0.800 ppb
2016-06-01	LA21252-1	ND
2016-06-01	LA21253-1	ND
2016-06-01	LA21254-1	ND
2016-06-01	LA21251-1	0.800 ppb
2016-06-01	LA21252-1	ND
2016-06-01	LA21253-1	ND
2016-06-01	LA21254-1	ND
2016-09-01	LA24995-1	ND
2016-09-01	LA24996-1	ND
2016-09-01	LA24997-1	ND
2016-09-01	LA24998-1	ND
2016-09-01	LA24995-1	ND
2016-09-01	LA24996-1	ND
2016-09-01	LA24997-1	ND
2016-09-01	LA24998-1	ND
2016-12-06	LA28408-1	ND
2016-12-06	LA28409-1	ND
2016-12-06	LA28410-1	ND
2016-12-06	LA28412-1	ND
2016-12-06	LA28408-1	ND
2016-12-06	LA28409-1	ND
2016-12-06	LA28410-1	ND
2016-12-06	LA28412-1	ND
2017-03-09	35300158001	ND
2017-03-09	35300158002	ND
2017-03-09	35300158003	ND
2017-03-09	35300158004	ND
2017-03-09	35300158001	ND
2017-03-09	35300158002	ND
2017-03-09	35300158003	ND
2017-03-09	35300158004	ND
2017-06-02	35315769021	ND
2017-06-02	35315769022	ND
2017-06-02	35315769023	ND
2017-06-02	35315769024	ND
2017-06-02	35315769021	ND
2017-06-02	35315769022	ND
2017-06-02	35315769023	ND
2017-06-02	35315769024	ND
2017-09-15	35335862015	0.590 ppb
2017-09-15	35335862016	0.540 ppb
2017-09-15	35335862017	0.710 ppb
2017-09-15	35335862018	0.500 ppb
2017-09-15	35335862015	0.590 ppb
2017-09-15	35335862016	0.540 ppb
2017-09-15	35335862017	0.710 ppb
2017-09-15	35335862018	0.500 ppb
2017-12-19	35364445001	0.940 ppb
2017-12-19	35364445002	1.30 ppb
2017-12-19	35364445003	0.970 ppb
2017-12-19	35364445004	1.20 ppb
2017-12-19	35364445001	0.940 ppb
2017-12-19	35364445002	1.30 ppb
2017-12-19	35364445003	0.970 ppb
2017-12-19	35364445004	1.20 ppb
2018-03-02	35377574001	0.800 ppb
2018-03-02	35377574002	0.780 ppb
2018-03-02	35377574003	0.770 ppb
2018-03-02	35377574004	0.680 ppb
2018-03-02	35377574001	0.800 ppb
2018-03-02	35377574002	0.780 ppb
2018-03-02	35377574003	0.770 ppb
2018-03-02	35377574004	0.680 ppb
2018-06-01	35396017001	1.60 ppb
2018-06-01	35396017002	1.60 ppb
2018-06-01	35396017003	7.20 ppb
2018-06-01	35396017004	6.40 ppb
2018-06-01	35396017001	1.60 ppb
2018-06-01	35396017002	1.60 ppb
2018-06-01	35396017003	7.20 ppb
2018-06-01	35396017004	6.40 ppb
2018-09-14	35418012001	1.20 ppb
2018-09-14	35418012002	0.900 ppb
2018-09-14	35418012003	0.890 ppb
2018-09-14	35418012004	0.900 ppb
2018-09-14	35418012001	1.20 ppb
2018-09-14	35418012002	0.900 ppb
2018-09-14	35418012003	0.890 ppb
2018-09-14	35418012004	0.900 ppb
2018-12-06	35435805001	0.880 ppb
2018-12-06	35435805002	1.10 ppb
2018-12-06	35435805003	0.990 ppb
2018-12-06	35435805004	0.730 ppb
2018-12-06	35435805001	0.880 ppb
2018-12-06	35435805002	1.10 ppb
2018-12-06	35435805003	0.990 ppb
2018-12-06	35435805004	0.730 ppb
2019-03-01	35451402001	1.20 ppb
2019-03-01	35451402002	0.960 ppb
2019-03-01	35451402003	0.960 ppb
2019-03-01	35451402004	1.20 ppb
2019-03-01	35451402001	1.20 ppb
2019-03-01	35451402002	0.960 ppb
2019-03-01	35451402003	0.960 ppb
2019-03-01	35451402004	1.20 ppb
2019-06-10	35475292001	2.10 ppb
2019-06-10	35475292002	1.60 ppb
2019-06-10	35475292003	2.10 ppb
2019-06-10	35475292004	2.20 ppb
2019-06-10	35475292001	2.10 ppb
2019-06-10	35475292002	1.60 ppb
2019-06-10	35475292003	2.10 ppb
2019-06-10	35475292004	2.20 ppb
2019-09-19	35499412001	0.860 ppb
2019-09-19	35499412002	1.30 ppb
2019-09-19	35499412003	0.910 ppb
2019-09-19	35499412004	0.860 ppb
2019-09-19	35499412001	0.860 ppb
2019-09-19	35499412002	1.30 ppb
2019-09-19	35499412003	0.910 ppb
2019-09-19	35499412004	0.860 ppb
2019-12-13	35518915001	0.570 ppb
2019-12-13	35518915002	0.320 ppb
2019-12-13	35518915003	0.350 ppb
2019-12-13	35518915004	0.300 ppb
2019-12-13	35518915001	0.570 ppb
2019-12-13	35518915002	0.320 ppb
2019-12-13	35518915003	0.350 ppb
2019-12-13	35518915004	0.300 ppb