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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

East Wenatchee Water District

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20130.510 ppb42ND - 1.03 ppb
20140.284 ppb164ND - 1.27 ppb
20150.474 ppb83ND - 1.39 ppb
20160.520 ppb42ND - 1.07 ppb
20171.30 ppb221.20 ppb - 1.40 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
2012-11-1378237ND
2013-10-0990699ND
2013-10-09907001.01 ppb
2013-10-0990702ND
2013-10-09907011.03 ppb
2014-01-1593892ND
2014-01-1593890ND
2014-01-1593889ND
2014-01-1593891ND
2014-04-2296867ND
2014-04-2296868ND
2014-04-2296866ND
2014-04-2296869ND
2014-07-10000291.13 ppb
2014-07-10000301.27 ppb
2014-07-1000031ND
2014-07-10000281.07 ppb
2014-10-1453859ND
2014-10-1453860ND
2014-10-14538581.07 ppb
2014-10-1453861ND
2015-01-2156599ND
2015-01-2156600ND
2015-01-2156598ND
2015-01-2156596ND
2015-04-21593301.38 ppb
2015-04-2159331ND
2015-04-21593331.39 ppb
2015-04-21593321.02 ppb
2016-08-161.07 ppb
2016-08-16ND
2016-08-16ND
2016-08-161.01 ppb