Trichloroacetic acid

Harnett County Department of Public Utilities

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)

167

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	1.59 ppb	32	25	ND - 2.40 ppb
2015	3.11 ppb	32	32	1.000 ppb - 6.60 ppb
2016	2.17 ppb	32	32	1.10 ppb - 4.20 ppb
2017	1.09 ppb	32	19	ND - 2.70 ppb
2018	4.08 ppb	32	32	2.10 ppb - 6.50 ppb
2019	1.55 ppb	32	27	ND - 3.50 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
2014-02-17	8329-021714-B01M	2.40 ppb
2014-02-17	8329-021714-B02M	2.30 ppb
2014-02-17	8329-021714-B03M	2.20 ppb
2014-02-17	8329-021714-B04M	2.20 ppb
2014-02-17	8329-021714-B05M	2.20 ppb
2014-02-17	8329-021714-B06M	2.20 ppb
2014-02-17	8329-021714-B07M	2.20 ppb
2014-02-17	8329-021714-B08M	2.40 ppb
2014-05-13	8329-051314-B01M	2.20 ppb
2014-05-13	8329-051314-B02M	2.00 ppb
2014-05-13	8329-051314-B03M	2.00 ppb
2014-05-13	8329-051314-B04M	2.30 ppb
2014-05-13	8329-051314-B05M	2.10 ppb
2014-05-13	8329-051314-B06M	2.20 ppb
2014-05-13	8329-051314-B07M	1.90 ppb
2014-05-13	8329-051314-B08M	2.30 ppb
2014-08-12	8329-081214-B01M	2.00 ppb
2014-08-12	8329-081214-B02M	1.50 ppb
2014-08-12	8329-081214-B03M	1.90 ppb
2014-08-12	8329-081214-B04M	2.20 ppb
2014-08-12	8329-081214-B05M	1.70 ppb
2014-08-12	8329-081214-B06M	1.40 ppb
2014-08-12	8329-081214-B07M	1.70 ppb
2014-08-12	8329-081214-B08M	2.30 ppb
2014-11-12	8329-111214-B01M	ND
2014-11-12	8329-111214-B02M	ND
2014-11-12	8329-111214-B03M	ND
2014-11-12	8329-111214-B04M	ND
2014-11-12	8329-111214-B05M	ND
2014-11-12	8329-111214-B06M	1.10 ppb
2014-11-12	8329-111214-B07M	ND
2014-11-12	8329-111214-B08M	ND
2015-02-11		1.80 ppb
2015-02-11		1.80 ppb
2015-02-11		1.70 ppb
2015-02-11		1.70 ppb
2015-02-11		1.80 ppb
2015-02-11		2.00 ppb
2015-02-11		2.00 ppb
2015-02-11		1.70 ppb
2015-05-12		4.10 ppb
2015-05-12		3.80 ppb
2015-05-12		3.50 ppb
2015-05-12		4.10 ppb
2015-05-12		4.10 ppb
2015-05-12		3.10 ppb
2015-05-12		3.20 ppb
2015-05-12		3.70 ppb
2015-08-11		1.20 ppb
2015-08-11		1.20 ppb
2015-08-11		1.000 ppb
2015-08-11		1.40 ppb
2015-08-11		1.40 ppb
2015-08-11		1.20 ppb
2015-08-11		1.20 ppb
2015-08-11		2.00 ppb
2015-11-10		5.20 ppb
2015-11-10		5.90 ppb
2015-11-10		5.80 ppb
2015-11-10		5.30 ppb
2015-11-10		5.10 ppb
2015-11-10		6.60 ppb
2015-11-10		5.30 ppb
2015-11-10		5.50 ppb
2016-02-09	8329-020916-B01M	2.80 ppb
2016-02-09	8329-020916-B02M	4.20 ppb
2016-02-09	8329-020916-B03M	2.70 ppb
2016-02-09	8329-020916-B04M	2.30 ppb
2016-02-09	8329-020916-B05M	3.30 ppb
2016-02-09	8329-020916-B06M	4.00 ppb
2016-02-09	8329-020916-B07M	3.10 ppb
2016-02-09	8329-020916-B08M	2.60 ppb
2016-05-10	8329-051016-B01M	2.20 ppb
2016-05-10	8329-051016-B02M	2.60 ppb
2016-05-10	8329-051016-B03M	2.50 ppb
2016-05-10	8329-051016-B04M	2.10 ppb
2016-05-10	8329-051016-B05M	2.20 ppb
2016-05-10	8329-051016-B06M	3.40 ppb
2016-05-10	8329-051016-B07M	3.00 ppb
2016-05-10	8329-051016-B08M	2.20 ppb
2016-08-09	8329-080916-B01M	1.70 ppb
2016-08-09	8329-080916-B02M	2.00 ppb
2016-08-09	8329-080916-B03M	1.80 ppb
2016-08-09	8329-080916-B04M	1.80 ppb
2016-08-09	8329-080916-B05M	1.40 ppb
2016-08-09	8329-080916-B06M	1.60 ppb
2016-08-09	8329-080916-B07M	1.70 ppb
2016-08-09	8329-080916-B08M	1.90 ppb
2016-11-09	8329-110916-B01M	1.30 ppb
2016-11-09	8329-110916-B02M	1.20 ppb
2016-11-09	8329-110916-B03M	1.10 ppb
2016-11-09	8329-110916-B04M	1.40 ppb
2016-11-09	8329-110916-B05M	1.40 ppb
2016-11-09	8329-110916-B06M	1.30 ppb
2016-11-09	8329-110916-B07M	1.30 ppb
2016-11-09	8329-110916-B08M	1.40 ppb
2017-02-09	8329-020917-B01M	1.70 ppb
2017-02-09	8329-020917-B02M	1.60 ppb
2017-02-09	8329-020917-B03M	1.40 ppb
2017-02-09	8329-020917-B04M	1.70 ppb
2017-02-09	8329-020917-B05M	1.60 ppb
2017-02-09	8329-020917-B06M	1.70 ppb
2017-02-09	8329-020917-B07M	1.30 ppb
2017-02-09	8329-020917-B08M	1.30 ppb
2017-05-09	8329-050917-B01M	2.30 ppb
2017-05-09	8329-050917-B02M	2.10 ppb
2017-05-09	8329-050917-B03M	2.30 ppb
2017-05-09	8329-050917-B04M	2.50 ppb
2017-05-09	8329-050917-B05M	2.70 ppb
2017-05-09	8329-050917-B06M	2.70 ppb
2017-05-09	8329-050917-B07M	2.20 ppb
2017-05-09	8329-050917-B08M	2.20 ppb
2017-08-07	8329-080717-B01M	ND
2017-08-07	8329-080717-B02M	ND
2017-08-07	8329-080717-B03M	ND
2017-08-07	8329-080717-B04M	1.20 ppb
2017-08-07	8329-080717-B05M	1.000 ppb
2017-08-07	8329-080717-B06M	1.40 ppb
2017-08-07	8329-080717-B07M	ND
2017-08-07	8329-080717-B08M	ND
2017-11-14	8329-111417-B01M	ND
2017-11-14	8329-111417-B02M	ND
2017-11-14	8329-111417-B03M	ND
2017-11-14	8329-111417-B04M	ND
2017-11-14	8329-111417-B05M	ND
2017-11-14	8329-111417-B06M	ND
2017-11-14	8329-111417-B07M	ND
2017-11-14	8329-111417-B08M	ND
2018-02-14	8329-021418-B01M	6.50 ppb
2018-02-14	8329-021418-B02M	5.90 ppb
2018-02-14	8329-021418-B03M	6.10 ppb
2018-02-14	8329-021418-B04M	4.50 ppb
2018-02-14	8329-021418-B05M	6.10 ppb
2018-02-14	8329-021418-B06M	6.30 ppb
2018-02-14	8329-021418-B07M	6.30 ppb
2018-02-19	8329-021918-B08M	6.10 ppb
2018-05-08	8329-050818-B01M	2.40 ppb
2018-05-08	8329-050818-B02M	2.40 ppb
2018-05-08	8329-050818-B03M	2.20 ppb
2018-05-08	8329-050818-B04M	3.10 ppb
2018-05-08	8329-050818-B05M	2.20 ppb
2018-05-08	8329-050818-B06M	2.10 ppb
2018-05-08	8329-050818-B07M	2.30 ppb
2018-05-08	8329-050818-B08M	2.80 ppb
2018-08-14	8329-081418-B01M	4.50 ppb
2018-08-14	8329-081418-B02M	4.20 ppb
2018-08-14	8329-081418-B03M	4.00 ppb
2018-08-14	8329-081418-B04M	3.90 ppb
2018-08-14	8329-081418-B05M	4.40 ppb
2018-08-14	8329-081418-B06M	4.40 ppb
2018-08-14	8329-081418-B07M	4.00 ppb
2018-08-14	8329-081418-B08M	3.80 ppb
2018-11-14	8329-111418-B01M	4.00 ppb
2018-11-14	8329-111418-B02M	4.30 ppb
2018-11-14	8329-111418-B03M	3.30 ppb
2018-11-14	8329-111418-B04M	3.10 ppb
2018-11-14	8329-111418-B05M	3.70 ppb
2018-11-14	8329-111418-B06M	3.70 ppb
2018-11-14	8329-111418-B07M	4.00 ppb
2018-11-14	8329-111418-B08M	4.10 ppb
2019-02-12	8329-021219-B01M	1.60 ppb
2019-02-12	8329-021219-B02M	1.40 ppb
2019-02-12	8329-021219-B03M	1.40 ppb
2019-02-12	8329-021219-B04M	2.20 ppb
2019-02-12	8329-021219-B05M	1.60 ppb
2019-02-12	8329-021219-B06M	1.50 ppb
2019-02-12	8329-021219-B07M	1.40 ppb
2019-02-12	8329-021219-B08M	1.70 ppb
2019-05-07	8329-050719-B01M	2.90 ppb
2019-05-07	8329-050719-B02M	2.80 ppb
2019-05-07	8329-050719-B03M	2.80 ppb
2019-05-07	8329-050719-B04M	3.50 ppb
2019-05-07	8329-050719-B05M	2.20 ppb
2019-05-07	8329-050719-B06M	2.30 ppb
2019-05-07	8329-050719-B07M	2.40 ppb
2019-05-07	8329-050719-B08M	2.70 ppb
2019-08-13	8329-081319-B01M	1.000 ppb
2019-08-13	8329-081319-B02M	ND
2019-08-13	8329-081319-B03M	ND
2019-08-13	8329-081319-B04M	1.10 ppb
2019-08-13	8329-081319-B05M	ND
2019-08-13	8329-081319-B06M	ND
2019-08-13	8329-081319-B07M	ND
2019-08-13	8329-081319-B08M	1.20 ppb
2019-11-13	8329-111319-B01M	1.70 ppb
2019-11-13	8329-111319-B02M	1.40 ppb
2019-11-13	8329-111319-B03M	1.30 ppb
2019-11-13	8329-111319-B04M	1.30 ppb
2019-11-13	8329-111319-B05M	1.60 ppb
2019-11-13	8329-111319-B06M	1.50 ppb
2019-11-13	8329-111319-B07M	1.40 ppb
2019-11-13	8329-111319-B08M	1.80 ppb