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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Tate-Monroe Water Association PWS

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND160ND
20140.175 ppb122ND - 1.10 ppb
20151.000 ppb21ND - 2.00 ppb
20161.35 ppb21ND - 2.70 ppb
20171.05 ppb21ND - 2.10 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
2012-08-0812-19626-01ND
2012-08-0812-19626-02ND
2013-01-0913-10436-01ND
2013-01-0913-10436-02ND
2013-01-0913-10436-03ND
2013-01-0913-10436-04ND
2013-04-1013-14402-04ND
2013-04-1013-14402-03ND
2013-04-1013-14402-02ND
2013-04-1013-14402-01ND
2013-07-1013-18928-04ND
2013-07-1013-18928-03ND
2013-07-1013-18928-02ND
2013-07-1013-18928-01ND
2013-10-0913-23754-01ND
2013-10-0913-23754-02ND
2013-10-0913-23754-03ND
2013-10-0913-23754-04ND
2014-01-0914-10462-011.000 ppb
2014-01-0914-10462-03ND
2014-01-1014-10462-04ND
2014-01-1014-10462-02ND
2014-04-0814-14188-02ND
2014-04-0814-14188-01ND
2014-04-0814-14188-04ND
2014-04-0814-14188-03ND
2014-07-0814-18876-01ND
2014-07-0814-18876-04ND
2014-07-0814-18876-031.10 ppb
2014-07-0814-18876-02ND
2015-08-1215-21520-02ND
2015-08-1215-21520-012.00 ppb
2016-09-1516-25562-012.70 ppb
2016-09-1516-25562-02ND
2017-08-1517-25659-012.10 ppb
2017-08-1517-25659-02ND