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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Brushy Creek MUD

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

65

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.125 ppb162ND - 1.000 ppb
20156.21 ppb1612ND - 12.5 ppb
20163.51 ppb16162.10 ppb - 4.40 ppb
20171.21 ppb1615ND - 1.80 ppb
20180.619 ppb164ND - 5.40 ppb
20192.66 ppb16161.40 ppb - 5.00 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
2014-02-24AC44175ND
2014-02-24AC44177ND
2014-02-24AC44179ND
2014-02-24AC44176ND
2014-06-03AC55834ND
2014-06-03AC55856ND
2014-06-03AC558361.000 ppb
2014-06-03AC55850ND
2014-08-22AC650291.000 ppb
2014-08-22AC65035ND
2014-08-22AC65033ND
2014-08-22AC65028ND
2014-10-29AC70885ND
2014-10-29AC70874ND
2014-10-29AC70877ND
2014-10-29AC70879ND
2015-02-12AC80393ND
2015-02-12AC80394ND
2015-02-12AC80402ND
2015-02-12AC80395ND
2015-06-17AC9629812.4 ppb
2015-06-17AC9630011.4 ppb
2015-06-17AC9629612.5 ppb
2015-06-17AC9630110.7 ppb
2015-09-11AD066984.30 ppb
2015-09-11AD067004.80 ppb
2015-09-11AD066954.70 ppb
2015-09-11AD067015.70 ppb
2015-11-23AD143808.10 ppb
2015-11-23AD143868.40 ppb
2015-11-23AD143848.20 ppb
2015-11-23AD143878.20 ppb
2016-02-18AD242584.10 ppb
2016-02-18AD242424.40 ppb
2016-02-18AD242403.60 ppb
2016-02-18AD242673.50 ppb
2016-06-10AD400944.00 ppb
2016-06-10AD400923.90 ppb
2016-06-10AD400934.10 ppb
2016-06-10AD400954.30 ppb
2016-09-15AD496903.90 ppb
2016-09-15AD496953.40 ppb
2016-09-15AD496893.70 ppb
2016-09-15AD496963.70 ppb
2016-11-02AD561122.60 ppb
2016-11-02AD561202.40 ppb
2016-11-02AD561112.10 ppb
2016-11-02AD561192.50 ppb
2017-02-27AD720551.80 ppb
2017-02-27AD720581.80 ppb
2017-02-27AD720601.70 ppb
2017-02-27AD720541.50 ppb
2017-05-25AD856981.20 ppb
2017-05-25AD857031.10 ppb
2017-05-25AD856971.10 ppb
2017-05-25AD857021.10 ppb
2017-08-31AD945991.20 ppb
2017-08-31AD945981.10 ppb
2017-08-31AD946001.20 ppb
2017-08-31AD946011.10 ppb
2017-10-16AE008271.000 ppb
2017-10-16AE007781.000 ppb
2017-10-16AE007741.50 ppb
2017-10-16AE00821ND
2018-03-01AE16285ND
2018-03-01AE16284ND
2018-03-01AE16283ND
2018-03-01AE16282ND
2018-04-19AE23185ND
2018-04-19AE23192ND
2018-04-19AE23186ND
2018-04-19AE23183ND
2018-08-09AE36326ND
2018-08-09AE36331ND
2018-08-09AE36333ND
2018-08-09AE36329ND
2018-10-11AE432071.30 ppb
2018-10-11AE432151.80 ppb
2018-10-11AE432091.40 ppb
2018-11-20AE465925.40 ppb
2019-03-11AE578072.80 ppb
2019-03-11AE578062.40 ppb
2019-03-11AE578042.70 ppb
2019-03-11AE578052.50 ppb
2019-06-11AE699954.30 ppb
2019-06-11AE699974.10 ppb
2019-06-11AE699965.00 ppb
2019-06-11AE699945.00 ppb
2019-09-11AE829902.00 ppb
2019-09-11AE830001.80 ppb
2019-09-11AE829982.00 ppb
2019-09-11AE829872.10 ppb
2019-12-02AE907971.40 ppb
2019-12-02AE908001.40 ppb
2019-12-02AE907981.60 ppb
2019-12-02AE907991.50 ppb