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EWG's Tap Water Database — 2019 UPDATE

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Dichloroacetic acid

Chelan County PUD 1

Dichloroacetic 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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.50 ppb111.50 ppb
20132.40 ppb112.40 ppb
20140.408 ppb133ND - 2.80 ppb
20150.200 ppb122ND - 1.30 ppb
20160.783 ppb126ND - 2.70 ppb
20170.575 ppb42ND - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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
2012-07-17814431.50 ppb
2013-08-07824552.40 ppb
2014-05-2183122ND
2014-05-21831201.30 ppb
2014-05-2183121ND
2014-05-2183123ND
2014-08-19834632.80 ppb
2014-08-1983462ND
2014-08-2083464ND
2014-08-2083468ND
2014-08-20834671.20 ppb
2014-10-1683752ND
2014-10-1683749ND
2014-10-1683751ND
2014-10-1683750ND
2015-03-1884048ND
2015-03-1884049ND
2015-03-1884047ND
2015-03-1884046ND
2015-04-2284140ND
2015-04-2284142ND
2015-04-2284141ND
2015-04-2284143ND
2015-10-0784648ND
2015-10-0784650ND
2015-10-07846491.10 ppb
2015-10-07846511.30 ppb
2016-04-27ND
2016-04-272.70 ppb
2016-04-27ND
2016-04-27ND
2016-07-131.50 ppb
2016-07-131.20 ppb
2016-07-13ND
2016-07-131.10 ppb
2016-12-011.50 ppb
2016-12-01ND
2016-12-01ND
2016-12-011.40 ppb
2017-01-231.20 ppb
2017-01-23ND
2017-01-231.10 ppb
2017-01-23ND