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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Averydale Mutual Water Company

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013N/A00N/A
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-07-103761-003-0925ND
2012-07-103761-004-0936ND
2014-08-053761-800-1407ND
2014-08-053761-801-1350ND
2015-10-133761-800-1505ND
2015-10-133761-801-1455ND
2016-08-233761-800-1417ND
2016-08-233761-801-1353ND
2017-08-223761-800-1417ND
2017-08-223761-801-1407ND