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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Huntington

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

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND40ND
2016ND90ND
2017ND80ND
20180.250 ppb81ND - 2.00 ppb
20190.638 ppb82ND - 2.60 ppb

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
2014-01-2714030003601ND
2014-01-2714030003701ND
2014-04-2214114001201ND
2014-04-2214114001301ND
2014-07-2214205006601ND
2014-07-2214205006501ND
2014-11-2514330006201ND
2014-11-2514330006301ND
2015-07-0815191001301ND
2015-07-0815191001201ND
2015-10-0615281007501ND
2015-10-0615281007601ND
2016-02-0916042003401ND
2016-02-0916042003301ND
2016-05-1716140001801ND
2016-05-1716140001701ND
2016-06-0616161000501ND
2016-08-1616231002201ND
2016-08-1616231002101ND
2016-11-1416321003201ND
2016-12-1216349000301ND
2017-02-0717039007901ND
2017-02-0717039008001ND
2017-05-0917130003601ND
2017-05-0917130003701ND
2017-08-0817222006301ND
2017-08-0817222006201ND
2017-11-0617313001301ND
2017-11-0617313001401ND
2018-02-0718040005201ND
2018-02-0718040005301ND
2018-04-30181230024012.00 ppb
2018-04-3018123002301ND
2018-08-0718221005001ND
2018-08-0718221004901ND
2018-10-2918305008701ND
2018-10-2918305008601ND
2019-01-28190310042012.60 ppb
2019-01-2819031004301ND
2019-04-2219115002401ND
2019-04-2219115002501ND
2019-07-22192060046012.50 ppb
2019-07-2219206004501ND
2019-10-2119297002401ND
2019-10-2119297002501ND