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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

PUD #1 of Asotin County

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND80ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND20ND

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
2014-06-0598386ND
2014-06-0598388ND
2014-06-0598390ND
2014-06-0598392ND
2014-07-2400852ND
2014-07-2400854ND
2014-07-2400850ND
2014-07-2400848ND
2014-10-0753553ND
2014-10-0753557ND
2014-10-0753551ND
2014-10-0753555ND
2015-03-3058634ND
2015-03-3058636ND
2015-03-3058638ND
2015-03-3058640ND
2015-05-2160404ND
2015-05-2160406ND
2015-05-2160408ND
2015-05-2160410ND
2016-03-17ND
2016-03-17ND
2017-04-19ND
2017-04-19ND
2018-03-22ND
2018-03-22ND
2019-04-09ND
2019-04-09ND