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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Cal-am Water Company - Duarte

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.

 

68

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20130.300 ppb41ND - 1.20 ppb
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND

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
2013-10-319588-801-1015ND
2013-10-319588-800-10401.20 ppb
2013-10-319588-802-1025ND
2013-10-319588-803-0830ND
2014-01-319588-800-0755ND
2014-01-319588-801-0820ND
2014-01-319588-802-0810ND
2014-01-319588-803-0740ND
2014-04-309588-802-0925ND
2014-04-309588-803-0800ND
2014-04-309588-801-0935ND
2014-04-309588-800-0910ND
2014-07-319588-802-1210ND
2014-07-319588-803-1125ND
2014-07-319588-801-1200ND
2014-07-319588-800-1145ND
2014-10-319588-802-0945ND
2014-10-319588-801-0955ND
2014-10-319588-803-1030ND
2014-10-319588-800-0935ND
2015-01-299588-802-0830ND
2015-01-299588-803-0730ND
2015-01-299588-801-0840ND
2015-01-299588-800-0820ND
2015-04-309588-803-1045ND
2015-04-309588-800-0750ND
2015-04-309588-801-0730ND
2015-04-309588-802-0740ND
2015-07-319588-802-0840ND
2015-07-319588-800-0830ND
2015-07-319588-801-0850ND
2015-07-319588-803-0730ND
2015-10-299588-802-0850ND
2015-10-299588-800-0840ND
2015-10-299588-801-0900ND
2015-10-299588-803-0730ND
2016-01-289588-802-0850ND
2016-01-289588-800-0840ND
2016-01-289588-803-0740ND
2016-01-289588-801-0900ND
2016-04-289588-802-0905ND
2016-04-289588-803-0755ND
2016-04-289588-800-0850ND
2016-04-289588-801-0915ND
2016-07-289588-801-0900ND
2016-07-289588-800-0840ND
2016-07-289588-802-0840ND
2016-07-289588-803-0730ND
2016-10-289588-801-0855ND
2016-10-289588-802-0845ND
2016-10-289588-803-0735ND
2016-10-289588-800-0835ND
2017-01-309588-801-0850ND
2017-01-309588-802-0840ND
2017-01-309588-803-0730ND
2017-01-309588-800-0830ND
2017-04-289588-801-0900ND
2017-04-289588-802-0850ND
2017-04-289588-803-0730ND
2017-04-289588-800-0840ND
2017-07-319588-801-1535ND
2017-07-319588-802-1550ND
2017-07-319588-800-1605ND
2017-07-319588-803-1515ND
2017-10-319588-800-0855ND
2017-10-319588-802-0905ND
2017-10-319588-803-0740ND
2017-10-319588-801-0925ND