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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Duncanville

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)

72

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.16 ppb1612ND - 1.90 ppb
20153.96 ppb1612ND - 31.1 ppb
20162.08 ppb16161.60 ppb - 2.70 ppb
20171.44 ppb1613ND - 2.50 ppb
20180.925 ppb1613ND - 1.50 ppb
20190.419 ppb166ND - 1.20 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
2014-02-24Q1405853004ND
2014-02-24Q1405853003ND
2014-02-24Q1405853002ND
2014-02-24Q1405853001ND
2014-05-15Q14166000041.30 ppb
2014-05-15Q14166000031.000 ppb
2014-05-15Q14166000021.30 ppb
2014-05-15Q14166000011.60 ppb
2014-07-11Q14274740011.90 ppb
2014-07-11Q14274740041.90 ppb
2014-07-11Q14274740021.90 ppb
2014-07-11Q14274740031.80 ppb
2014-10-27Q14539980071.60 ppb
2014-10-27Q14539980061.30 ppb
2014-10-27Q14539980051.60 ppb
2014-10-27Q14539980041.40 ppb
2015-03-19Q1510466004ND
2015-03-19Q1510466003ND
2015-03-19Q1510466002ND
2015-03-19Q1510466001ND
2015-06-16Q152240700131.1 ppb
2015-06-16Q15224070026.10 ppb
2015-06-16Q15224070046.00 ppb
2015-06-16Q15224070036.10 ppb
2015-09-21Q15367300041.90 ppb
2015-09-21Q15367300031.60 ppb
2015-09-21Q15367300022.00 ppb
2015-09-21Q15367300012.10 ppb
2015-11-23Q15464330041.60 ppb
2015-11-23Q15464330031.30 ppb
2015-11-23Q15464330021.60 ppb
2015-11-23Q15464330011.90 ppb
2016-01-21Q16028090022.00 ppb
2016-01-21Q16028090011.70 ppb
2016-01-21Q16028090031.70 ppb
2016-01-21Q16028090041.90 ppb
2016-04-06Q16136340062.70 ppb
2016-04-06Q16136340052.10 ppb
2016-04-06Q16136340042.60 ppb
2016-04-06Q16136340032.70 ppb
2016-07-14Q16287110042.20 ppb
2016-07-14Q16287110031.80 ppb
2016-07-14Q16287110022.10 ppb
2016-07-14Q16287110012.10 ppb
2016-10-28Q16464120031.90 ppb
2016-10-28Q16464120022.10 ppb
2016-10-28Q16464120041.60 ppb
2016-10-28Q16464120012.10 ppb
2017-01-11Q17015520061.50 ppb
2017-01-11Q17015520021.60 ppb
2017-01-11Q17015520051.50 ppb
2017-01-11Q17015520011.30 ppb
2017-04-12Q17152600042.50 ppb
2017-04-12Q17152600031.70 ppb
2017-04-12Q17152600021.90 ppb
2017-04-12Q17152600012.20 ppb
2017-07-26Q17310440021.40 ppb
2017-07-26Q1731044001ND
2017-07-26Q1731044004ND
2017-07-26Q1731044003ND
2017-11-08Q17573380021.80 ppb
2017-11-08Q17573380041.60 ppb
2017-11-08Q17573380011.90 ppb
2017-11-08Q17573380032.20 ppb
2018-01-31Q18039880021.000 ppb
2018-01-31Q18039880041.000 ppb
2018-01-31Q18039880011.000 ppb
2018-01-31Q18039880031.000 ppb
2018-05-08Q1818463006ND
2018-05-08Q1818463003ND
2018-05-08Q1818463004ND
2018-05-08Q18184630071.000 ppb
2018-07-10Q18270220041.50 ppb
2018-07-10Q18270220031.000 ppb
2018-07-10Q18270220021.30 ppb
2018-07-10Q18270220011.20 ppb
2018-10-11Q18405800011.30 ppb
2018-10-11Q18405800031.10 ppb
2018-10-11Q18405800041.000 ppb
2018-10-11Q18405800021.40 ppb
2019-01-09Q19011400031.20 ppb
2019-01-09Q19011400011.20 ppb
2019-01-09Q19011400021.10 ppb
2019-01-09Q19011400041.20 ppb
2019-04-18Q19158740031.000 ppb
2019-04-18Q1915874005ND
2019-04-18Q1915874004ND
2019-04-18Q19158740021.000 ppb
2019-08-06Q1951797004ND
2019-08-06Q1951797003ND
2019-08-06Q1951797002ND
2019-08-06Q1951797001ND
2019-10-10Q1972251003ND
2019-10-10Q1972251006ND
2019-10-10Q1972251005ND
2019-10-10Q1972251004ND