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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Wenatchee

Monochloroacetic 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

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND120ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic 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.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-0612244ND
2014-02-0612243ND
2014-02-0612241ND
2014-02-0612242ND
2014-05-0545681ND
2014-05-0545682ND
2014-05-0545683ND
2014-05-0545684ND
2014-08-0582502ND
2014-08-0582504ND
2014-08-0582503ND
2014-08-0582501ND
2014-11-0424672ND
2014-11-0424671ND
2014-11-0424673ND
2014-11-0424674ND
2015-02-0311133ND
2015-02-0311134ND
2015-02-0311132ND
2015-02-0311131ND
2015-05-0447202ND
2015-05-0447201ND
2015-05-0447204ND
2015-05-0447203ND
2015-08-0686692ND
2015-08-0686694ND
2015-08-0686693ND
2015-08-1389241ND
2016-08-29ND
2016-08-29ND
2017-08-21ND
2017-08-21ND
2018-08-20ND
2018-08-20ND
2019-02-27ND
2019-02-27ND
2019-08-20ND
2019-08-20ND