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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Quartz Hill Water District

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND160ND
20160.506 ppb164ND - 2.60 ppb
20172.71 ppb167ND - 9.90 ppb
20180.700 ppb166ND - 2.40 ppb
20190.0625 ppb161ND - 1.000 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
2014-02-253761-803-0820ND
2014-02-253761-802-0740ND
2014-02-253761-801-0845ND
2014-02-253761-800-0830ND
2014-06-243761-803-1038ND
2014-06-243761-802-1110ND
2014-06-243761-801-1017ND
2014-06-243761-800-1000ND
2014-08-193761-803-0900ND
2014-08-193761-802-0915ND
2014-08-193761-801-0827ND
2014-08-193761-800-0840ND
2015-02-033761-801-0817ND
2015-02-033761-802-0909ND
2015-02-033761-803-0835ND
2015-02-033761-800-0930ND
2015-05-053761-803-0831ND
2015-05-053761-802-0913ND
2015-05-053761-801-0750ND
2015-05-053761-800-0723ND
2015-08-043761-800-1100ND
2015-08-043761-801-1040ND
2015-08-043761-802-0950ND
2015-08-043761-803-1025ND
2015-11-033761-803-1000ND
2015-11-033761-802-1035ND
2015-11-033761-800-0915ND
2015-11-033761-801-0928ND
2016-02-023761-802-0942ND
2016-02-023761-801-0758ND
2016-02-023761-803-0705ND
2016-02-023761-800-0810ND
2016-05-033761-801-09202.60 ppb
2016-05-033761-802-10101.10 ppb
2016-05-033761-800-10352.20 ppb
2016-05-033761-803-09402.20 ppb
2016-08-023761-801-1013ND
2016-08-023761-800-1000ND
2016-08-023761-802-0924ND
2016-08-023761-803-0950ND
2016-11-013761-802-1100ND
2016-11-013761-801-1000ND
2016-11-013761-800-1010ND
2016-11-013761-803-1020ND
2017-02-283761-802-10409.90 ppb
2017-02-283761-803-09409.10 ppb
2017-02-283761-801-09209.70 ppb
2017-02-283761-800-09007.60 ppb
2017-05-303761-803-10052.50 ppb
2017-05-303761-802-10402.90 ppb
2017-05-303761-801-0945ND
2017-05-303761-800-0933ND
2017-08-013761-802-1115ND
2017-08-013761-801-1000ND
2017-08-013761-803-10351.70 ppb
2017-08-013761-800-1015ND
2017-11-283761-800-0955ND
2017-11-283761-801-0935ND
2017-11-283761-803-1030ND
2017-11-283761-802-1057ND
2018-02-273761-800-08152.40 ppb
2018-02-273761-803-07351.80 ppb
2018-02-273761-801-08002.20 ppb
2018-02-273761-802-09002.30 ppb
2018-05-293761-803-1020ND
2018-05-293761-801-09451.10 ppb
2018-05-293761-802-10551.40 ppb
2018-05-293761-800-0955ND
2018-08-283761-800-0730ND
2018-08-283761-803-0720ND
2018-08-283761-801-0755ND
2018-08-283761-802-1015ND
2018-11-273761-800-0930ND
2018-11-273761-802-1035ND
2018-11-273761-803-1000ND
2018-11-273761-801-0915ND
2019-02-263761-802-0820ND
2019-02-263761-803-0800ND
2019-02-263761-800-0747ND
2019-02-263761-801-0735ND
2019-05-283761-803-1000ND
2019-05-283761-802-0930ND
2019-05-283761-800-1012ND
2019-05-283761-801-1031ND
2019-08-273761-803-0845ND
2019-08-273761-802-0858ND
2019-08-273761-801-0820ND
2019-08-273761-800-0830ND
2019-11-263761-803-0830ND
2019-11-263761-802-09001.000 ppb
2019-11-263761-800-0745ND
2019-11-263761-801-0725ND