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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Troy City 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.

MORE ABOUT THIS CONTAMINANT

 

26

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
20190.400 ppb220.400 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
2014-01-03A140173043ND
2014-01-03A140173042ND
2014-01-03A140173041ND
2014-01-03A140173040ND
2014-04-01A140190819ND
2014-04-01A140190818ND
2014-04-01A140190817ND
2014-04-16A140191208ND
2014-07-02A140213731ND
2014-07-02A140213730ND
2014-07-02A140213729ND
2014-07-02A140213732ND
2014-10-01A140217358ND
2014-10-01A140217357ND
2014-10-01A140217354ND
2014-10-01A140217353ND
2015-07-08A150231601ND
2015-07-08A150231602ND
2016-07-06A160399409ND
2016-07-06A160399410ND
2017-07-05A170504552ND
2017-07-05A170504553ND
2018-07-12A180605803ND
2018-07-12A180605804ND
2019-07-109G01777-010.400 ppb
2019-07-109G01777-020.400 ppb