Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

Azusa Light and Water

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

 

195

Samples

0

Samples exceeding legal limit (MCL)

126

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.40 ppb3225ND - 8.50 ppb
20151.07 ppb3210ND - 5.30 ppb
20161.83 ppb349ND - 21.0 ppb
20174.70 ppb32321.60 ppb - 11.0 ppb
20182.10 ppb3326ND - 5.90 ppb
20193.00 ppb3224ND - 7.50 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
2014-01-299588-800-11551.80 ppb
2014-01-299588-801-1215ND
2014-01-299588-802-1300ND
2014-01-299588-803-1235ND
2014-01-299588-804-1240ND
2014-01-299588-805-1250ND
2014-01-299588-806-1310ND
2014-01-299588-807-1225ND
2014-04-289588-800-08253.80 ppb
2014-04-289588-801-08102.10 ppb
2014-04-289588-802-08452.10 ppb
2014-04-289588-803-07302.40 ppb
2014-04-289588-804-07401.90 ppb
2014-04-289588-805-07501.70 ppb
2014-04-289588-806-09002.70 ppb
2014-04-289588-807-08004.40 ppb
2014-07-299588-800-11508.50 ppb
2014-07-299588-801-12103.70 ppb
2014-07-299588-802-13104.40 ppb
2014-07-299588-803-12353.90 ppb
2014-07-299588-804-12404.10 ppb
2014-07-299588-805-12554.70 ppb
2014-07-299588-806-09004.00 ppb
2014-07-299588-807-12204.30 ppb
2014-10-299588-800-08208.40 ppb
2014-10-299588-801-08107.90 ppb
2014-10-299588-802-08404.00 ppb
2014-10-299588-803-07306.70 ppb
2014-10-299588-804-07404.90 ppb
2014-10-299588-805-07504.70 ppb
2014-10-299588-806-08505.60 ppb
2014-10-299588-807-08006.00 ppb
2015-01-309588-800-08254.80 ppb
2015-01-309588-801-0810ND
2015-01-309588-802-08404.30 ppb
2015-01-309588-803-0730ND
2015-01-309588-804-0740ND
2015-01-309588-805-07504.60 ppb
2015-01-309588-806-08553.90 ppb
2015-01-309588-807-08004.40 ppb
2015-04-299588-800-08255.30 ppb
2015-04-299588-801-0810ND
2015-04-299588-802-08451.70 ppb
2015-04-299588-803-0730ND
2015-04-299588-804-07401.50 ppb
2015-04-299588-805-0750ND
2015-04-299588-806-09002.40 ppb
2015-04-299588-807-0800ND
2015-07-299588-800-0840ND
2015-07-299588-801-0825ND
2015-07-299588-802-0855ND
2015-07-299588-803-0745ND
2015-07-299588-804-0755ND
2015-07-299588-805-0805ND
2015-07-299588-806-09151.20 ppb
2015-07-299588-807-0815ND
2015-10-309588-800-0825ND
2015-10-309588-801-0810ND
2015-10-309588-802-0845ND
2015-10-309588-803-0730ND
2015-10-309588-804-0740ND
2015-10-309588-805-0750ND
2015-10-309588-806-0855ND
2015-10-309588-807-0800ND
2016-01-299588-800-0830ND
2016-01-299588-801-0815ND
2016-01-299588-802-0845ND
2016-01-299588-803-0730ND
2016-01-299588-804-0740ND
2016-01-299588-805-0750ND
2016-01-299588-806-09001.40 ppb
2016-01-299588-807-0800ND
2016-04-299588-800-083021.0 ppb
2016-04-299588-801-08157.70 ppb
2016-04-299588-802-085013.0 ppb
2016-04-299588-803-07304.40 ppb
2016-04-299588-804-07401.70 ppb
2016-04-299588-805-07501.50 ppb
2016-04-299588-806-09058.20 ppb
2016-04-299588-807-0800ND
2016-07-299588-800-0805ND
2016-07-299588-801-0750ND
2016-07-299588-802-0820ND
2016-07-299588-803-0715ND
2016-07-299588-804-0720ND
2016-07-299588-805-0730ND
2016-07-299588-806-0835ND
2016-07-299588-807-0740ND
2016-10-319588-800-08203.20 ppb
2016-10-319588-801-0800ND
2016-10-319588-802-0845ND
2016-10-319588-803-0715ND
2016-10-319588-804-0730ND
2016-10-319588-805-0740ND
2016-10-319588-806-0900ND
2016-10-319588-807-0750ND
2016-12-159588-800-0810ND
2016-12-159588-803-0735ND
2017-01-319588-800-08153.60 ppb
2017-01-319588-801-08003.20 ppb
2017-01-319588-802-08303.20 ppb
2017-01-319588-803-07103.20 ppb
2017-01-319588-804-07253.30 ppb
2017-01-319588-805-07353.20 ppb
2017-01-319588-806-08453.20 ppb
2017-01-319588-807-07503.20 ppb
2017-04-279588-800-100511.0 ppb
2017-04-279588-801-09408.90 ppb
2017-04-279588-802-08409.00 ppb
2017-04-279588-803-09158.40 ppb
2017-04-279588-804-09058.50 ppb
2017-04-279588-805-08559.10 ppb
2017-04-279588-806-08258.10 ppb
2017-04-279588-807-09258.40 ppb
2017-07-289588-800-09405.40 ppb
2017-07-289588-801-10004.30 ppb
2017-07-289588-802-11154.90 ppb
2017-07-289588-803-10354.60 ppb
2017-07-289588-804-10454.60 ppb
2017-07-289588-805-11004.40 ppb
2017-07-289588-806-11305.10 ppb
2017-07-289588-807-10154.40 ppb
2017-10-309588-800-08252.00 ppb
2017-10-309588-801-08102.40 ppb
2017-10-309588-802-08451.80 ppb
2017-10-309588-803-07302.30 ppb
2017-10-309588-804-07401.60 ppb
2017-10-309588-805-07501.60 ppb
2017-10-309588-806-09002.00 ppb
2017-10-309588-807-08001.60 ppb
2018-01-309588-800-08301.80 ppb
2018-01-309588-801-08151.70 ppb
2018-01-309588-802-08451.90 ppb
2018-01-309588-803-07352.70 ppb
2018-01-309588-804-07455.90 ppb
2018-01-309588-805-07551.80 ppb
2018-01-309588-806-09001.90 ppb
2018-01-309588-807-08051.60 ppb
2018-02-139588-807-07302.70 ppb
2018-04-309588-800-08202.00 ppb
2018-04-309588-801-08051.30 ppb
2018-04-309588-802-08451.30 ppb
2018-04-309588-803-07202.90 ppb
2018-04-309588-804-07301.70 ppb
2018-04-309588-805-07401.10 ppb
2018-04-309588-806-09051.90 ppb
2018-04-309588-807-07551.30 ppb
2018-07-319588-800-08053.70 ppb
2018-07-319588-801-0750ND
2018-07-319588-802-0820ND
2018-07-319588-803-0705ND
2018-07-319588-804-0715ND
2018-07-319588-805-0725ND
2018-07-319588-806-0835ND
2018-07-319588-807-0740ND
2018-10-299588-800-08155.10 ppb
2018-10-299588-801-07553.10 ppb
2018-10-299588-802-08353.60 ppb
2018-10-299588-803-07153.80 ppb
2018-10-299588-804-07253.50 ppb
2018-10-299588-805-07353.50 ppb
2018-10-299588-806-09003.90 ppb
2018-10-299588-807-07453.50 ppb
2019-01-309588-800-0810ND
2019-01-309588-801-0755ND
2019-01-309588-802-0825ND
2019-01-309588-803-0705ND
2019-01-309588-804-0715ND
2019-01-309588-805-0725ND
2019-01-309588-806-1215ND
2019-01-309588-807-0740ND
2019-04-309588-800-08153.60 ppb
2019-04-309588-801-07553.40 ppb
2019-04-309588-802-08353.90 ppb
2019-04-309588-803-07154.20 ppb
2019-04-309588-804-07253.80 ppb
2019-04-309588-805-07353.70 ppb
2019-04-309588-806-08554.00 ppb
2019-04-309588-807-07453.80 ppb
2019-07-309588-800-07304.00 ppb
2019-07-309588-801-07153.80 ppb
2019-07-309588-802-07504.10 ppb
2019-07-309588-803-06254.60 ppb
2019-07-309588-804-06357.50 ppb
2019-07-309588-805-06453.80 ppb
2019-07-309588-806-08053.80 ppb
2019-07-309588-807-07003.80 ppb
2019-10-309588-800-08003.80 ppb
2019-10-309588-801-07453.10 ppb
2019-10-309588-802-08203.70 ppb
2019-10-309588-803-07004.30 ppb
2019-10-309588-804-07105.30 ppb
2019-10-309588-805-07203.20 ppb
2019-10-309588-806-08353.50 ppb
2019-10-309588-807-07303.40 ppb