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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Granbury

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)

34

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.856 ppb169ND - 2.90 ppb
20150.638 ppb165ND - 4.80 ppb
20160.725 ppb165ND - 3.90 ppb
20171.44 ppb166ND - 10.5 ppb
20180.338 ppb163ND - 2.50 ppb
20190.744 ppb166ND - 3.30 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
2014-02-26Q1406448004ND
2014-02-26Q14064480031.20 ppb
2014-02-26Q14064480021.000 ppb
2014-02-26Q1406448001ND
2014-06-17Q14216670022.90 ppb
2014-06-17Q14216670011.000 ppb
2014-06-17Q14216670051.000 ppb
2014-06-17Q14216670042.80 ppb
2014-07-09Q1426808056ND
2014-07-09Q14268080551.60 ppb
2014-07-09Q14268080571.000 ppb
2014-07-09Q14268080581.20 ppb
2014-10-22Q1453503005ND
2014-10-22Q1453503004ND
2014-10-22Q1453503003ND
2014-10-22Q1453503002ND
2015-03-03Q1507988004ND
2015-03-03Q1507988003ND
2015-03-03Q1507988002ND
2015-03-03Q1507988001ND
2015-06-18Q1522966026ND
2015-06-18Q1522966027ND
2015-06-18Q1522966025ND
2015-06-18Q1522966028ND
2015-08-06Q1530880004ND
2015-08-06Q15308800031.40 ppb
2015-08-06Q15308800021.60 ppb
2015-08-06Q1530880001ND
2015-11-16Q1544973012ND
2015-11-16Q15449730114.80 ppb
2015-11-16Q15449730101.10 ppb
2015-11-16Q15449730091.30 ppb
2016-01-14Q16016710253.90 ppb
2016-01-14Q1601671024ND
2016-01-14Q16016710263.60 ppb
2016-01-14Q1601671027ND
2016-05-31Q1621308007ND
2016-05-31Q1621308006ND
2016-05-31Q1621308005ND
2016-05-31Q1621308004ND
2016-07-28Q16309480061.50 ppb
2016-07-28Q1630948005ND
2016-07-28Q1630948004ND
2016-07-28Q16309480031.60 ppb
2016-11-30Q1652000001ND
2016-11-30Q1652000008ND
2016-11-30Q1652000002ND
2016-11-30Q16520000071.000 ppb
2017-02-16Q1706806005ND
2017-02-16Q1706806004ND
2017-02-16Q1706806003ND
2017-02-16Q1706806002ND
2017-04-17Q171556500510.5 ppb
2017-04-17Q1715565004ND
2017-04-17Q1715565003ND
2017-04-17Q17155650023.70 ppb
2017-07-06Q1727515022ND
2017-07-06Q1727515004ND
2017-07-06Q1727515015ND
2017-07-06Q1727515005ND
2017-10-03Q17483240111.40 ppb
2017-10-03Q17483240102.30 ppb
2017-10-03Q17483240092.90 ppb
2017-10-03Q17483240082.30 ppb
2018-01-22Q1802342014ND
2018-01-22Q1802342013ND
2018-01-22Q1802342012ND
2018-01-22Q18023420112.50 ppb
2018-05-02Q1817630022ND
2018-05-02Q1817630010ND
2018-05-02Q1817630023ND
2018-05-02Q1817630011ND
2018-07-23Q1829047003ND
2018-07-23Q1829047005ND
2018-07-23Q1829047002ND
2018-07-23Q1829047004ND
2018-12-10Q18504730261.30 ppb
2018-12-10Q1850473025ND
2018-12-10Q1850473024ND
2018-12-10Q18504730231.60 ppb
2019-01-30Q1904576003ND
2019-01-30Q19045760021.50 ppb
2019-01-30Q1904576004ND
2019-01-30Q1904576005ND
2019-04-15Q19149950051.20 ppb
2019-04-15Q1914995004ND
2019-04-15Q1914995003ND
2019-04-15Q19149950021.40 ppb
2019-09-04Q19621640073.30 ppb
2019-09-04Q1962164006ND
2019-09-04Q1962164005ND
2019-09-04Q19621640043.20 ppb
2019-11-06Q1976023002ND
2019-11-06Q19760230051.30 ppb
2019-11-06Q1976023004ND
2019-11-06Q1976023003ND