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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Carroll County Public Water Supply District 1

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2014-09-18AC35665ND
2014-09-18AC35664ND
2015-10-05AC60953ND
2015-10-05AC60954ND
2015-12-22AC63978ND
2015-12-22AC63977ND
2016-03-29AC67681ND
2016-03-29AC67680ND
2016-06-28AC79465ND
2016-06-28AC79466ND
2016-09-15AC83910ND
2016-09-15AC83911ND
2016-12-30AC88492ND
2016-12-30AC88493ND
2017-04-05AC92178ND
2017-04-05AC92179ND
2017-06-28AC98523ND
2017-06-28AC98524ND
2017-09-28AD06497ND
2017-09-28AD06496ND
2017-12-28AD10650ND
2017-12-28AD10649ND
2018-09-27AD32961ND
2018-09-27AD32962ND
2019-11-22AD55236ND
2019-11-22AD55237ND