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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Provo City

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)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.556 ppb164ND - 5.10 ppb
20150.775 ppb167ND - 3.00 ppb
20160.613 ppb165ND - 2.60 ppb
20170.713 ppb168ND - 1.90 ppb
20181.34 ppb164ND - 6.50 ppb
20190.269 ppb163ND - 1.60 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 Result
2014-01-07ND
2014-01-07ND
2014-01-07ND
2014-01-07ND
2014-04-14ND
2014-04-14ND
2014-04-14ND
2014-04-14ND
2014-07-08ND
2014-07-081.10 ppb
2014-07-081.20 ppb
2014-07-081.50 ppb
2014-10-21ND
2014-10-21ND
2014-10-21ND
2014-10-215.10 ppb
2015-01-12ND
2015-01-12ND
2015-01-12ND
2015-01-12ND
2015-05-11ND
2015-05-111.000 ppb
2015-05-11ND
2015-05-111.10 ppb
2015-08-062.30 ppb
2015-08-063.00 ppb
2015-08-061.80 ppb
2015-08-061.70 ppb
2015-11-191.50 ppb
2015-11-19ND
2015-11-19ND
2015-11-19ND
2016-02-17ND
2016-02-17ND
2016-02-17ND
2016-02-17ND
2016-05-24ND
2016-05-24ND
2016-05-24ND
2016-05-24ND
2016-08-172.10 ppb
2016-08-171.60 ppb
2016-08-171.40 ppb
2016-08-172.10 ppb
2016-11-14ND
2016-11-14ND
2016-11-142.60 ppb
2016-11-14ND
2017-02-231.000 ppb
2017-02-23ND
2017-02-231.90 ppb
2017-02-23ND
2017-05-251.10 ppb
2017-05-251.70 ppb
2017-05-251.20 ppb
2017-05-25ND
2017-08-291.50 ppb
2017-08-291.80 ppb
2017-08-29ND
2017-08-291.20 ppb
2017-11-16ND
2017-11-16ND
2017-11-16ND
2017-11-16ND
2018-02-05ND
2018-02-05ND
2018-02-05ND
2018-02-05ND
2018-05-09ND
2018-05-09ND
2018-05-09ND
2018-05-09ND
2018-08-082.70 ppb
2018-08-086.30 ppb
2018-08-086.00 ppb
2018-08-086.50 ppb
2018-11-08ND
2018-11-08ND
2018-11-08ND
2018-11-08ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-02-04ND
2019-05-14ND
2019-05-14ND
2019-05-14ND
2019-05-14ND
2019-08-141.50 ppb
2019-08-141.60 ppb
2019-08-141.20 ppb
2019-08-14ND
2019-11-07ND
2019-11-07ND
2019-11-07ND
2019-11-07ND