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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Missouri American Jefferson City District

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
20160.769 ppb163ND - 4.80 ppb
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-02-1224689601ND
2014-02-1224689701ND
2014-02-1224689801ND
2014-02-1224689501ND
2014-05-1325590301ND
2014-05-1325590401ND
2014-05-1325590501ND
2014-05-1325590601ND
2014-08-1226546101ND
2014-08-1226546201ND
2014-08-1226546301ND
2014-08-1226546401ND
2014-11-0427379001ND
2014-11-0427379201ND
2014-11-0427379101ND
2014-11-0427378901ND
2015-02-0328151801ND
2015-02-0328151901ND
2015-02-0328152001ND
2015-02-0328152101ND
2015-05-0528883001ND
2015-05-0528883101ND
2015-05-0528882901ND
2015-05-0528882801ND
2015-08-1229799801ND
2015-08-1229800001ND
2015-08-1229799901ND
2015-08-1229799701ND
2015-11-1730645901ND
2015-11-1730645801ND
2015-11-1730645701ND
2015-11-1730646001ND
2016-02-0231261501ND
2016-02-0231261601ND
2016-02-0231261701ND
2016-02-0231261401ND
2016-05-2531962301ND
2016-05-2531962201ND
2016-05-2531962101ND
2016-05-2531962001ND
2016-08-0933015501ND
2016-08-0933015601ND
2016-08-0933015701ND
2016-08-0933015801ND
2016-11-14337021014.80 ppb
2016-11-14337022013.60 ppb
2016-11-14337023013.90 ppb
2016-11-1433702401ND
2017-02-0734565001ND
2017-02-0734564901ND
2017-02-0734565101ND
2017-02-0734565201ND
2017-05-1635401001ND
2017-05-1635401201ND
2017-05-1635401301ND
2017-05-1635401101ND
2017-08-0236570901ND
2017-08-0236571201ND
2017-08-0236571001ND
2017-08-0236571101ND
2017-11-0737659801ND
2017-11-0737659601ND
2017-11-0737659501ND
2017-11-0737659701ND
2018-02-0638582301ND
2018-02-0638582401ND
2018-02-0638582501ND
2018-02-0638582601ND
2018-05-0839343701ND
2018-05-0839343801ND
2018-05-0839343901ND
2018-05-0839344001ND
2018-08-0940559801ND
2018-08-0940559601ND
2018-08-0940559501ND
2018-08-0940559701ND
2018-11-0641788001ND
2018-11-0641788101ND
2018-11-0641788201ND
2018-11-0641788301ND
2019-02-0643198501ND
2019-02-0643198601ND
2019-02-0643198701ND
2019-02-0643198801ND
2019-05-0743958101ND
2019-05-0743958301ND
2019-05-0743958201ND
2019-05-0743958001ND
2019-08-0645741201ND
2019-08-0645741301ND
2019-08-0645741401ND
2019-08-0645741501ND
2019-11-0647091501ND
2019-11-0647091601ND
2019-11-0647091701ND
2019-11-0647091801ND