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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Ocean View Water Department

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

 

21

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20145.13 ppb64ND - 11.9 ppb
20154.67 ppb62ND - 15.2 ppb
2016ND20ND
2017ND20ND
2018ND80ND
201910.2 ppb94ND - 45.3 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
2016-09-29L6487345-2ND
2016-09-29L6487345-1ND
2017-12-26L6986753-2 HAA5ND
2017-12-26L6986753-1 HAA5ND
2018-03-09S77695ND
2018-03-09S770699ND
2018-06-04S811932ND
2018-06-04S811923ND
2018-09-05S812303ND
2018-09-05S812275ND
2018-12-06S817011ND
2018-12-06S817007ND
2019-03-04S847864ND
2019-03-04S847860ND
2019-06-04S865022ND
2019-06-04S865014ND
2019-09-04S895836ND
2019-09-04S8958352.15 ppb
2019-09-04S8958315.05 ppb
2019-12-03S92000639.4 ppb
2019-12-03S92001045.3 ppb