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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Santa Ana

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

 

212

Samples

0

Samples exceeding legal limit (MCL)

79

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.87 ppb3220ND - 6.20 ppb
20151.67 ppb3218ND - 4.90 ppb
20160.822 ppb329ND - 4.10 ppb
20170.697 ppb3213ND - 3.20 ppb
20180.636 ppb3614ND - 2.40 ppb
20190.152 ppb485ND - 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
2014-03-123761-801-08465.50 ppb
2014-03-123761-802-09423.00 ppb
2014-03-123761-803-10092.70 ppb
2014-03-123761-804-10223.10 ppb
2014-03-123761-805-10423.20 ppb
2014-03-123761-806-1055ND
2014-03-123761-807-1106ND
2014-03-123761-808-1127ND
2014-06-123761-801-08315.40 ppb
2014-06-123761-802-09466.20 ppb
2014-06-123761-803-10215.70 ppb
2014-06-123761-804-10316.20 ppb
2014-06-123761-805-10565.70 ppb
2014-06-123761-806-11166.20 ppb
2014-06-123761-807-11316.00 ppb
2014-06-123761-808-1225ND
2014-08-123761-801-08265.30 ppb
2014-08-123761-802-08565.90 ppb
2014-08-123761-803-09364.90 ppb
2014-08-123761-804-09465.90 ppb
2014-08-123761-805-12165.00 ppb
2014-08-123761-806-1226ND
2014-08-123761-807-1241ND
2014-08-123761-808-1301ND
2014-12-153761-801-08562.20 ppb
2014-12-153761-802-09262.20 ppb
2014-12-153761-803-0951ND
2014-12-153761-804-1001ND
2014-12-153761-805-10261.60 ppb
2014-12-153761-806-1041ND
2014-12-153761-807-1051ND
2014-12-153761-808-1126ND
2015-03-123761-801-09162.10 ppb
2015-03-123761-802-09512.20 ppb
2015-03-123761-803-10311.60 ppb
2015-03-123761-804-10412.00 ppb
2015-03-123761-805-11011.90 ppb
2015-03-123761-806-1116ND
2015-03-123761-807-1126ND
2015-03-123761-808-1146ND
2015-06-123761-801-08202.70 ppb
2015-06-123761-802-09002.80 ppb
2015-06-123761-803-09202.70 ppb
2015-06-123761-804-10152.80 ppb
2015-06-123761-805-10552.40 ppb
2015-06-123761-806-1120ND
2015-06-123761-807-1145ND
2015-06-123761-808-1215ND
2015-08-123761-801-09003.30 ppb
2015-08-123761-802-09304.90 ppb
2015-08-123761-803-10504.70 ppb
2015-08-123761-804-10554.60 ppb
2015-08-123761-805-11203.60 ppb
2015-08-123761-806-11353.60 ppb
2015-08-123761-807-11453.50 ppb
2015-08-123761-808-1220ND
2015-12-083761-801-0856ND
2015-12-083761-802-09212.00 ppb
2015-12-083761-803-0931ND
2015-12-083761-804-0941ND
2015-12-083761-805-1001ND
2015-12-083761-806-1016ND
2015-12-083761-807-1031ND
2015-12-083761-808-1056ND
2016-03-083761-801-1045ND
2016-03-083761-802-0820ND
2016-03-083761-803-0955ND
2016-03-083761-804-0940ND
2016-03-083761-805-1120ND
2016-03-083761-806-1135ND
2016-03-083761-807-1105ND
2016-03-083761-808-1010ND
2016-06-153761-801-08301.70 ppb
2016-06-153761-802-09003.40 ppb
2016-06-153761-803-09304.10 ppb
2016-06-153761-804-09403.90 ppb
2016-06-153761-805-10001.70 ppb
2016-06-153761-806-1010ND
2016-06-153761-807-1030ND
2016-06-153761-808-1100ND
2016-08-113761-801-1145ND
2016-08-113761-802-10502.80 ppb
2016-08-113761-803-09103.30 ppb
2016-08-113761-804-10303.80 ppb
2016-08-113761-805-1110ND
2016-08-113761-806-1120ND
2016-08-113761-807-1130ND
2016-08-113761-808-0930ND
2016-12-133761-801-1035ND
2016-12-133761-802-0850ND
2016-12-133761-803-0955ND
2016-12-133761-804-09251.60 ppb
2016-12-133761-805-1100ND
2016-12-133761-806-1130ND
2016-12-133761-807-1050ND
2016-12-133761-808-1010ND
2017-03-143761-801-09501.10 ppb
2017-03-143761-802-10203.20 ppb
2017-03-143761-803-1040ND
2017-03-143761-804-1050ND
2017-03-143761-805-11152.00 ppb
2017-03-143761-806-11251.60 ppb
2017-03-143761-807-11351.60 ppb
2017-03-143761-808-1155ND
2017-06-143761-801-0750ND
2017-06-143761-802-08302.60 ppb
2017-06-143761-803-09501.60 ppb
2017-06-143761-804-10001.70 ppb
2017-06-143761-805-1025ND
2017-06-143761-806-1045ND
2017-06-143761-807-1055ND
2017-06-143761-808-1115ND
2017-08-153761-801-08252.20 ppb
2017-08-153761-802-0845ND
2017-08-153761-803-09351.30 ppb
2017-08-153761-804-09501.40 ppb
2017-08-153761-805-1020ND
2017-08-153761-806-1030ND
2017-08-153761-807-1040ND
2017-08-153761-808-1100ND
2017-12-123761-801-0920ND
2017-12-123761-802-1000ND
2017-12-123761-803-1018ND
2017-12-123761-804-1030ND
2017-12-123761-805-10561.000 ppb
2017-12-123761-806-1114ND
2017-12-123761-807-11251.000 ppb
2017-12-123761-808-1153ND
2018-03-133761-801-1110ND
2018-03-133761-802-0900ND
2018-03-133761-803-1240ND
2018-03-133761-804-1212ND
2018-03-133761-805-1120ND
2018-03-133761-806-1135ND
2018-03-133761-807-1140ND
2018-03-133761-808-1225ND
2018-06-123761-801-0850ND
2018-06-123761-802-09352.40 ppb
2018-06-123761-803-10002.30 ppb
2018-06-123761-804-10122.30 ppb
2018-06-123761-805-10352.00 ppb
2018-06-123761-806-10521.90 ppb
2018-06-123761-807-11051.80 ppb
2018-06-123761-808-1133ND
2018-08-143761-801-0845ND
2018-08-143761-802-09201.60 ppb
2018-08-143761-803-09451.30 ppb
2018-08-143761-804-0955ND
2018-08-143761-805-10151.30 ppb
2018-08-143761-806-10281.30 ppb
2018-08-143761-807-10391.30 ppb
2018-08-143761-808-1104ND
2018-11-133761-801-04451.20 ppb
2018-11-133761-802-05051.10 ppb
2018-11-133761-803-0525ND
2018-11-133761-804-0540ND
2018-11-133761-805-06001.10 ppb
2018-11-133761-806-0615ND
2018-11-133761-807-0625ND
2018-11-133761-808-0645ND
2018-11-133761-809-0710ND
2018-11-133761-810-0730ND
2018-11-133761-811-0750ND
2018-11-133761-812-0805ND
2019-02-123761-801-0825ND
2019-02-123761-802-11102.20 ppb
2019-02-123761-803-1400ND
2019-02-123761-804-1422ND
2019-02-123761-805-11302.00 ppb
2019-02-123761-806-1240ND
2019-02-123761-807-1225ND
2019-02-123761-808-1413ND
2019-02-123761-809-1252ND
2019-02-123761-810-1330ND
2019-02-123761-811-1347ND
2019-02-123761-812-1338ND
2019-05-073761-801-0825ND
2019-05-073761-802-0857ND
2019-05-073761-803-1042ND
2019-05-073761-804-1018ND
2019-05-073761-805-0924ND
2019-05-073761-806-0953ND
2019-05-073761-807-0938ND
2019-05-073761-808-1031ND
2019-05-073761-809-1155ND
2019-05-073761-810-1103ND
2019-05-073761-811-1130ND
2019-05-073761-812-1120ND
2019-08-133761-801-1210ND
2019-08-133761-802-09481.000 ppb
2019-08-133761-803-0724ND
2019-08-133761-804-0741ND
2019-08-133761-805-1039ND
2019-08-133761-806-1020ND
2019-08-133761-807-1057ND
2019-08-133761-808-0804ND
2019-08-133761-809-1117ND
2019-08-133761-810-0118ND
2019-08-133761-811-1251ND
2019-08-133761-812-1236ND
2019-11-123761-801-0646ND
2019-11-123761-802-07561.000 ppb
2019-11-123761-803-0532ND
2019-11-123761-804-05501.10 ppb
2019-11-123761-805-1131ND
2019-11-123761-806-1141ND
2019-11-123761-807-1123ND
2019-11-123761-808-0542ND
2019-11-123761-809-0706ND
2019-11-123761-810-0625ND
2019-11-123761-811-0613ND
2019-11-123761-812-0604ND