Trichloroacetic acid

City of Bakersfield

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)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.556 ppb	32	5	ND - 10.00 ppb
2015	0.328 ppb	32	3	ND - 5.80 ppb
2016	5.97 ppb	32	14	ND - 31.0 ppb
2017	7.66 ppb	32	16	ND - 34.0 ppb
2018	5.59 ppb	32	17	ND - 25.0 ppb
2019	7.37 ppb	32	16	ND - 32.0 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
2014-01-21	5810-900-1300	ND
2014-01-21	5810-901-1045	ND
2014-01-21	5810-902-1155	ND
2014-01-21	5810-903-1120	ND
2014-01-21	5810-904-0950	ND
2014-01-21	5810-905-1225	ND
2014-01-21	5810-906-1340	ND
2014-01-21	5810-907-0930	ND
2014-04-21	5810-900-1155	1.70 ppb
2014-04-21	5810-901-0950	2.90 ppb
2014-04-21	5810-902-1108	ND
2014-04-21	5810-903-1047	10.00 ppb
2014-04-21	5810-904-1019	ND
2014-04-21	5810-905-1129	ND
2014-04-21	5810-906-1221	ND
2014-04-21	5810-907-0925	1.50 ppb
2014-07-24	5810-900-1100	ND
2014-07-24	5810-901-1305	1.70 ppb
2014-07-24	5810-902-1145	ND
2014-07-24	5810-903-1205	ND
2014-07-24	5810-904-1225	ND
2014-07-24	5810-905-1120	ND
2014-07-24	5810-906-1035	ND
2014-07-24	5810-907-1240	ND
2014-10-23	5810-900-0948	ND
2014-10-23	5810-901-1450	ND
2014-10-23	5810-902-1035	ND
2014-10-23	5810-903-1335	ND
2014-10-23	5810-904-1250	ND
2014-10-23	5810-905-1015	ND
2014-10-23	5810-906-0913	ND
2014-10-23	5810-907-1313	ND
2015-01-22	5810-900-1132	ND
2015-01-22	5810-901-1352	ND
2015-01-22	5810-902-1212	ND
2015-01-22	5810-903-1237	ND
2015-01-22	5810-904-1252	ND
2015-01-22	5810-905-1152	ND
2015-01-22	5810-906-1107	ND
2015-01-22	5810-907-1332	ND
2015-04-27	5810-900-0958	ND
2015-04-27	5810-901-1350	ND
2015-04-27	5810-902-1045	ND
2015-04-27	5810-903-1105	ND
2015-04-27	5810-904-1143	5.80 ppb
2015-04-27	5810-905-1027	ND
2015-04-27	5810-906-1418	ND
2015-04-27	5810-907-1320	ND
2015-07-23	5810-900-0925	ND
2015-07-23	5810-901-1150	ND
2015-07-23	5810-902-1010	ND
2015-07-23	5810-903-1035	ND
2015-07-23	5810-904-1055	ND
2015-07-23	5810-905-0940	ND
2015-07-23	5810-906-0845	ND
2015-07-23	5810-907-1110	ND
2015-10-19	5810-900-1437	ND
2015-10-19	5810-901-1250	ND
2015-10-19	5810-902-1409	ND
2015-10-19	5810-903-1314	2.30 ppb
2015-10-19	5810-904-1332	ND
2015-10-19	5810-905-1422	ND
2015-10-19	5810-906-1514	ND
2015-10-19	5810-907-1347	2.40 ppb
2016-01-19	5810-900-1135	ND
2016-01-19	5810-901-1115	ND
2016-01-19	5810-902-1000	ND
2016-01-19	5810-903-1020	ND
2016-01-19	5810-904-1040	ND
2016-01-19	5810-905-0950	ND
2016-01-19	5810-906-0920	ND
2016-01-19	5810-907-1055	ND
2016-04-19	5810-900-1324	11.0 ppb
2016-04-19	5810-901-1213	20.0 ppb
2016-04-19	5810-902-1249	ND
2016-04-19	5810-903-1237	31.0 ppb
2016-04-19	5810-904-1150	ND
2016-04-19	5810-905-1308	7.90 ppb
2016-04-19	5810-906-1348	ND
2016-04-19	5810-907-1135	ND
2016-07-18	5810-900-0907	18.0 ppb
2016-07-18	5810-901-1040	19.0 ppb
2016-07-18	5810-902-0950	1.10 ppb
2016-07-18	5810-903-1015	27.0 ppb
2016-07-18	5810-904-1101	20.0 ppb
2016-07-18	5810-905-0927	1.20 ppb
2016-07-18	5810-906-1312	ND
2016-07-18	5810-907-1120	1.70 ppb
2016-10-18	5810-900-1055	6.30 ppb
2016-10-18	5810-901-1300	6.90 ppb
2016-10-18	5810-902-1140	ND
2016-10-18	5810-903-1200	20.0 ppb
2016-10-18	5810-904-1220	ND
2016-10-18	5810-905-1120	ND
2016-10-18	5810-906-1015	ND
2016-10-18	5810-907-1235	ND
2017-01-17	5810-900-1010	1.40 ppb
2017-01-17	5810-901-1335	ND
2017-01-17	5810-902-1050	ND
2017-01-17	5810-903-1110	3.10 ppb
2017-01-17	5810-904-1140	ND
2017-01-17	5810-905-1035	ND
2017-01-17	5810-906-0920	ND
2017-01-17	5810-907-1150	ND
2017-04-18	5810-900-1027	20.0 ppb
2017-04-18	5810-901-1433	34.0 ppb
2017-04-18	5810-902-1118	ND
2017-04-18	5810-903-1338	34.0 ppb
2017-04-18	5810-904-1137	ND
2017-04-18	5810-905-1059	ND
2017-04-18	5810-906-1001	ND
2017-04-18	5810-907-1356	27.0 ppb
2017-07-17	5810-900-1302	3.80 ppb
2017-07-17	5810-901-1231	20.0 ppb
2017-07-17	5810-902-1152	1.50 ppb
2017-07-17	5810-903-1215	20.0 ppb
2017-07-17	5810-904-0903	ND
2017-07-17	5810-905-1046	1.30 ppb
2017-07-17	5810-906-1113	ND
2017-07-17	5810-907-1006	17.0 ppb
2017-10-16	5810-900-1105	ND
2017-10-16	5810-901-1335	14.0 ppb
2017-10-16	5810-902-1210	ND
2017-10-16	5810-903-1315	17.0 ppb
2017-10-16	5810-904-1250	18.0 ppb
2017-10-16	5810-905-1130	ND
2017-10-16	5810-906-1405	ND
2017-10-16	5810-907-1240	13.0 ppb
2018-01-18	5810-900-1002	9.30 ppb
2018-01-18	5810-901-1105	4.90 ppb
2018-01-18	5810-902-1026	ND
2018-01-18	5810-903-1053	8.30 ppb
2018-01-18	5810-904-1157	19.0 ppb
2018-01-18	5810-905-1219	6.80 ppb
2018-01-18	5810-906-0933	ND
2018-01-18	5810-907-1140	1.30 ppb
2018-04-16	5810-900-1437	ND
2018-04-16	5810-901-1414	ND
2018-04-16	5810-902-1242	ND
2018-04-16	5810-903-1315	3.70 ppb
2018-04-16	5810-904-1040	25.0 ppb
2018-04-16	5810-905-0951	ND
2018-04-16	5810-906-0920	ND
2018-04-16	5810-907-1108	9.80 ppb
2018-07-17	5810-900-0944	7.00 ppb
2018-07-17	5810-901-1247	20.0 ppb
2018-07-17	5810-902-1031	ND
2018-07-17	5810-903-1228	18.0 ppb
2018-07-17	5810-904-1200	14.0 ppb
2018-07-17	5810-905-1014	ND
2018-07-17	5810-906-0855	ND
2018-07-17	5810-907-1145	15.0 ppb
2018-10-17	5810-900-0935	1.10 ppb
2018-10-17	5810-901-0825	ND
2018-10-17	5810-902-0910	ND
2018-10-17	5810-903-0855	9.80 ppb
2018-10-17	5810-904-0955	ND
2018-10-17	5810-905-0920	ND
2018-10-17	5810-906-0843	ND
2018-10-17	5810-907-1004	5.90 ppb
2019-01-16	5810-900-0929	ND
2019-01-16	5810-901-1257	ND
2019-01-16	5810-902-1035	ND
2019-01-16	5810-903-1044	2.50 ppb
2019-01-16	5810-904-1115	ND
2019-01-16	5810-905-0957	ND
2019-01-16	5810-906-0850	ND
2019-01-16	5810-907-1231	ND
2019-04-16	5810-900-0950	17.0 ppb
2019-04-16	5810-901-1155	30.0 ppb
2019-04-16	5810-902-1025	ND
2019-04-16	5810-903-1050	32.0 ppb
2019-04-16	5810-904-1135	ND
2019-04-16	5810-905-1005	ND
2019-04-16	5810-906-0920	4.90 ppb
2019-04-16	5810-907-1120	7.30 ppb
2019-07-16	5810-904-1137	22.0 ppb
2019-07-16	5810-905-1158	ND
2019-07-16	5810-906-1248	ND
2019-07-16	5810-907-1127	17.0 ppb
2019-07-17	5810-900-1015	9.70 ppb
2019-07-17	5810-901-0929	18.0 ppb
2019-07-17	5810-902-1002	ND
2019-07-17	5810-903-0947	10.00 ppb
2019-10-22	5810-900-1215	15.0 ppb
2019-10-22	5810-901-1242	16.0 ppb
2019-10-22	5810-902-1013	ND
2019-10-22	5810-903-1102	11.0 ppb
2019-10-22	5810-904-1138	14.0 ppb
2019-10-22	5810-905-1103	ND
2019-10-22	5810-906-0939	ND
2019-10-22	5810-907-1308	9.30 ppb