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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Southlake

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)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.344 ppb164ND - 1.60 ppb
20150.925 ppb169ND - 2.00 ppb
20160.956 ppb1612ND - 1.70 ppb
20170.0813 ppb161ND - 1.30 ppb
2018ND160ND
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
2014-02-17Q1404980004ND
2014-02-17Q1404980003ND
2014-02-17Q1404980002ND
2014-02-17Q1404980001ND
2014-04-01Q1410446003ND
2014-04-01Q1410446004ND
2014-04-01Q1410446002ND
2014-04-01Q1410446001ND
2014-07-07Q1426172001ND
2014-07-07Q14261720041.20 ppb
2014-07-24Q1430621002ND
2014-07-24Q1430621001ND
2014-10-06Q1450907004ND
2014-10-06Q14509070031.60 ppb
2014-10-06Q14509070021.60 ppb
2014-10-06Q14509070011.10 ppb
2015-01-20Q1501773004ND
2015-01-20Q1501773003ND
2015-01-20Q1501773002ND
2015-01-20Q1501773001ND
2015-04-06Q15126940011.50 ppb
2015-04-06Q1512694002ND
2015-04-06Q1512694004ND
2015-04-06Q1512694003ND
2015-07-09Q15263930041.40 ppb
2015-07-09Q15263930031.20 ppb
2015-07-09Q15263930021.40 ppb
2015-07-09Q15263930011.40 ppb
2015-10-13Q15403580032.00 ppb
2015-10-13Q15403580022.00 ppb
2015-10-13Q15403580011.90 ppb
2015-10-13Q15403580042.00 ppb
2016-01-28Q16040810021.000 ppb
2016-01-28Q16040810011.10 ppb
2016-01-28Q16040810031.000 ppb
2016-01-28Q16040810041.10 ppb
2016-04-18Q1615462001ND
2016-04-18Q1615462004ND
2016-04-18Q1615462003ND
2016-04-18Q1615462002ND
2016-07-14Q16286380041.50 ppb
2016-07-14Q16286380031.70 ppb
2016-07-14Q16286380021.40 ppb
2016-07-14Q16286380011.50 ppb
2016-10-26Q16457160011.20 ppb
2016-10-26Q16457160031.30 ppb
2016-10-26Q16457160021.20 ppb
2016-10-26Q16457160041.30 ppb
2017-01-03Q1700130003ND
2017-01-03Q1700130005ND
2017-01-03Q1700130002ND
2017-01-03Q1700130004ND
2017-04-04Q1714107004ND
2017-04-04Q1714107002ND
2017-04-04Q1714107001ND
2017-04-04Q1714107003ND
2017-07-11Q1728071001ND
2017-07-11Q1728071003ND
2017-07-11Q1728071004ND
2017-07-11Q1728071002ND
2017-10-02Q1747940003ND
2017-10-02Q1747940002ND
2017-10-02Q17479400011.30 ppb
2017-10-02Q1747940004ND
2018-01-11Q1801595005ND
2018-01-11Q1801595004ND
2018-01-11Q1801595003ND
2018-01-11Q1801595002ND
2018-04-05Q1814142003ND
2018-04-05Q1814142001ND
2018-04-05Q1814142002ND
2018-04-05Q1814142004ND
2018-07-02Q1826218001ND
2018-07-02Q1826218004ND
2018-07-02Q1826218003ND
2018-07-02Q1826218002ND
2018-10-01Q1839290003ND
2018-10-01Q1839290002ND
2018-10-01Q1839290004ND
2018-10-01Q1839290001ND
2019-02-13Q1906586003ND
2019-02-13Q1906586002ND
2019-02-13Q1906586004ND
2019-02-13Q1906586005ND
2019-04-11Q1914728004ND
2019-04-11Q1914728003ND
2019-04-11Q1914728002ND
2019-04-11Q1914728001ND
2019-07-23Q1946849004ND
2019-07-23Q1946849003ND
2019-07-23Q1946849002ND
2019-07-23Q1946849001ND
2019-11-21Q1977739001ND
2019-11-21Q1977739004ND
2019-11-21Q1977739003ND
2019-11-21Q1977739002ND