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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

IL American-fernway

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

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND60ND
2016ND20ND
2017ND40ND
2018ND80ND
2019ND80ND

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
2014-02-0424782601ND
2014-02-0424782501ND
2014-05-0725605601ND
2014-05-0725605701ND
2014-08-0626718101ND
2014-08-0626718201ND
2014-11-0427463201ND
2014-11-0427463301ND
2015-02-0528060701ND
2015-02-1028060801ND
2015-05-0528854901ND
2015-05-0528606101ND
2015-08-0629786501ND
2015-08-0630056701ND
2016-08-1033011201ND
2016-08-1033011301ND
2017-08-0536689701ND
2017-08-0536689601ND
2017-11-0837816401ND
2017-11-0837816301ND
2018-02-1338580201ND
2018-02-1338580101ND
2018-05-0139329201ND
2018-05-0139329301ND
2018-08-0240543901ND
2018-08-0240544101ND
2018-11-0241811901ND
2018-11-0241812001ND
2019-02-0542829901ND
2019-02-0542830001ND
2019-05-0743939601ND
2019-05-0743939701ND
2019-08-1545769801ND
2019-08-1545769901ND
2019-11-1947031301ND
2019-11-1947031201ND