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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Commerce-city, Water Department

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.725 ppb81ND - 5.80 ppb
20151.33 ppb82ND - 5.40 ppb
2016ND80ND
20171.000 ppb83ND - 4.20 ppb
2018ND80ND
20190.513 ppb82ND - 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
2014-01-135810-801-0906ND
2014-01-135810-800-0920ND
2014-04-155810-801-0921ND
2014-04-155810-800-0936ND
2014-07-155810-801-1046ND
2014-07-155810-800-10565.80 ppb
2014-10-145810-801-0846ND
2014-10-145810-800-0910ND
2015-01-125810-800-0926ND
2015-01-125810-801-0907ND
2015-04-155810-800-0845ND
2015-04-155810-801-0830ND
2015-07-145810-800-09335.40 ppb
2015-07-145810-801-09155.20 ppb
2015-11-039590-800-1358ND
2015-11-039590-801-1342ND
2016-01-115810-800-1040ND
2016-01-115810-801-1027ND
2016-04-125810-800-0935ND
2016-04-125810-801-0913ND
2016-07-125810-800-0947ND
2016-07-125810-801-0926ND
2016-10-115810-800-1505ND
2016-10-115810-801-1446ND
2017-01-105810-801-1453ND
2017-01-105810-800-1357ND
2017-04-115810-801-0925ND
2017-04-115810-800-0947ND
2017-07-115810-801-09324.20 ppb
2017-07-115810-800-10031.40 ppb
2017-10-105810-801-1020ND
2017-10-105810-800-10362.40 ppb
2018-01-095810-800-1000ND
2018-01-095810-801-0938ND
2018-04-105810-800-1001ND
2018-04-105810-801-0927ND
2018-07-105810-801-0938ND
2018-07-105810-800-1009ND
2018-10-095810-801-0923ND
2018-10-095810-800-1006ND
2019-01-085810-801-1023ND
2019-01-085810-800-1113ND
2019-04-095810-801-09151.90 ppb
2019-04-095810-800-1003ND
2019-07-095810-801-09382.20 ppb
2019-07-095810-800-1021ND
2019-10-155810-801-0919ND
2019-10-155810-800-1004ND