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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Texas A&M University Main Campus

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)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.0688 ppb161ND - 1.10 ppb
2015ND160ND
20160.144 ppb162ND - 1.30 ppb
20170.163 ppb162ND - 1.40 ppb
20180.194 ppb161ND - 3.10 ppb
2019ND160ND

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
2014-02-12AC42606ND
2014-02-12AC42607ND
2014-02-12AC42592ND
2014-02-12AC42610ND
2014-04-08AC49721ND
2014-04-08AC49724ND
2014-04-08AC49726ND
2014-04-08AC497251.10 ppb
2014-07-17AC60146ND
2014-07-17AC60147ND
2014-07-17AC60144ND
2014-07-17AC60155ND
2014-10-14AC69660ND
2014-10-14AC69670ND
2014-10-14AC69666ND
2014-10-14AC69667ND
2015-02-10AC79896ND
2015-02-10AC79898ND
2015-02-10AC79900ND
2015-02-10AC79904ND
2015-05-14AC92008ND
2015-05-14AC92037ND
2015-05-14AC92039ND
2015-05-14AC92012ND
2015-09-11AD06828ND
2015-09-11AD06851ND
2015-09-11AD06854ND
2015-09-11AD06834ND
2015-12-08AD15943ND
2015-12-08AD15948ND
2015-12-08AD15941ND
2015-12-08AD15942ND
2016-03-22AD298521.000 ppb
2016-03-22AD29853ND
2016-03-22AD29854ND
2016-03-22AD298511.30 ppb
2016-06-06AD39372ND
2016-06-06AD39370ND
2016-06-06AD39414ND
2016-06-06AD39416ND
2016-09-22AD50664ND
2016-09-22AD50669ND
2016-09-22AD50667ND
2016-09-22AD50670ND
2016-10-04AD52456ND
2016-10-04AD52453ND
2016-10-04AD52446ND
2016-10-04AD52457ND
2017-03-22AD76296ND
2017-03-22AD76295ND
2017-03-22AD76294ND
2017-03-22AD76293ND
2017-05-22AD85013ND
2017-05-22AD85007ND
2017-05-22AD85009ND
2017-05-22AD85006ND
2017-08-14AD93033ND
2017-08-14AD930381.40 ppb
2017-08-14AD93040ND
2017-08-14AD93034ND
2017-10-17AE01045ND
2017-10-17AE01049ND
2017-10-17AE010781.20 ppb
2017-10-17AE01055ND
2018-03-02AE16470ND
2018-03-02AE16472ND
2018-03-02AE16473ND
2018-03-02AE16471ND
2018-05-14AE26114ND
2018-05-14AE26108ND
2018-05-14AE26109ND
2018-05-14AE26111ND
2018-07-25AE34462ND
2018-07-25AE34460ND
2018-07-25AE34454ND
2018-07-25AE34464ND
2018-10-25AE44585ND
2018-10-25AE44587ND
2018-10-25AE44588ND
2018-10-25AE445863.10 ppb
2019-01-18AE50570ND
2019-01-18AE50569ND
2019-01-18AE50565ND
2019-01-18AE50568ND
2019-04-09AE61585ND
2019-04-09AE61584ND
2019-04-09AE61587ND
2019-04-09AE61593ND
2019-07-11AE74079ND
2019-07-11AE74071ND
2019-07-11AE74074ND
2019-07-11AE74085ND
2019-10-08AE85942ND
2019-10-08AE85946ND
2019-10-08AE85949ND
2019-10-08AE85944ND