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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

United Water Westchester Rate District 2

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

 

176

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND320ND
20152.34 ppb167ND - 6.50 ppb
20160.959 ppb328ND - 6.80 ppb
2017ND320ND
2018ND320ND
2019ND320ND

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
2014-02-064020132-05-DBP2ND
2014-02-064020132-06-DBP2ND
2014-02-064020132-02-DBP2ND
2014-02-064020132-01-DBP2ND
2014-02-064020132-07-DBP2ND
2014-02-064020132-03-DBP2ND
2014-02-064020132-04-DBP2ND
2014-02-114020132-08-DBP2ND
2014-05-074050325-04-DBP2ND
2014-05-074050325-03-DBP2ND
2014-05-074050325-01-DBP2ND
2014-05-094050325-05-DBP2ND
2014-05-094050325-06-DBP2ND
2014-05-094050325-02-DBP2ND
2014-05-094050325-08-DBP2ND
2014-05-134050325-07-DBP2ND
2014-08-124080428-07-DBP2ND
2014-08-124080428-04-DBP2ND
2014-08-124080428-01-DBP2ND
2014-08-124080428-02-DBP2ND
2014-08-124080428-06-DBP2ND
2014-08-124080428-08-DBP2ND
2014-08-124080428-05-DBP2ND
2014-08-124080428-03-DBP2ND
2014-11-054110212-03-DBP2ND
2014-11-054110212-04-DBP2ND
2014-11-054110212-08-DBP2ND
2014-11-054110212-02-DBP2ND
2014-11-054110212-06-DBP2ND
2014-11-054110212-01-DBP2ND
2014-11-054110212-07-DBP2ND
2014-11-054110212-05-DBP2ND
2015-02-102054609008-DBP2ND
2015-02-102054609007-DBP2ND
2015-02-102054609002-DBP2ND
2015-02-102054609004-DBP2ND
2015-02-102054609005-DBP2ND
2015-02-102054609006-DBP2ND
2015-02-102054609001-DBP2ND
2015-02-102054609003-DBP2ND
2015-05-062069808003-DBP25.20 ppb
2015-05-062069808007-DBP26.50 ppb
2015-05-062069808006-DBP24.90 ppb
2015-05-062069808005-DBP25.50 ppb
2015-05-062069808004-DBP2ND
2015-05-062069808008-DBP24.50 ppb
2015-05-062069808001-DBP24.80 ppb
2015-05-062069808002-DBP26.10 ppb
2016-02-096020308-01-DBP2ND
2016-02-096020308-04-DBP2ND
2016-02-096020308-06-DBP2ND
2016-02-096020308-03-DBP2ND
2016-02-096020308-07-DBP2ND
2016-02-096020308-08-DBP2ND
2016-02-096020308-02-DBP2ND
2016-02-096020308-05-DBP2ND
2016-05-102143084005-DBP26.80 ppb
2016-05-102143084007-DBP22.60 ppb
2016-05-102143084003-DBP24.40 ppb
2016-05-102143084002-DBP25.20 ppb
2016-05-102143084001-DBP2ND
2016-05-102143084006-DBP23.80 ppb
2016-05-102143084004-DBP22.20 ppb
2016-05-102143084008-DBP22.90 ppb
2016-08-09216272001-DBP22.80 ppb
2016-08-092166272005-DBP2ND
2016-08-092166272004-DBP2ND
2016-08-092166272006-DBP2ND
2016-08-092166272003-DBP2ND
2016-08-092166272008-DBP2ND
2016-08-092166272007-DBP2ND
2016-08-092166272002-DBP2ND
2016-11-152189965006-DBP2ND
2016-11-152189965001-DBP2ND
2016-11-152189965007-DBP2ND
2016-11-152189965005-DBP2ND
2016-11-152189965002-DBP2ND
2016-11-152189965008-DBP2ND
2016-11-152189965004-DBP2ND
2016-11-152189965003-DBP2ND
2017-02-147020435-04-DBP2ND
2017-02-147020435-03-DBP2ND
2017-02-147020435-05-DBP2ND
2017-02-147020435-02-DBP2ND
2017-02-147020435-06-DBP2ND
2017-02-147020435-07-DBP2ND
2017-02-147020435-01-DBP2ND
2017-02-147020435-08-DBP2ND
2017-05-097050390-05-DBP2ND
2017-05-097050390-03-DBP2ND
2017-05-097050390-08-DBP2ND
2017-05-097050390-02-DBP2ND
2017-05-097050390-07-DBP2ND
2017-05-097050390-06-DBP2ND
2017-05-097050390-01-DBP2ND
2017-05-097050390-04-DBP2ND
2017-08-157080617-04-DBP2ND
2017-08-157080617-05-DBP2ND
2017-08-157080617-02-DBP2ND
2017-08-157080617-07-DBP2ND
2017-08-157080617-06-DBP2ND
2017-08-157080617-01-DBP2ND
2017-08-157080617-03-DBP2ND
2017-08-157080617-08-DBP2ND
2017-11-147110564-06DBP2ND
2017-11-147110564-08DBP2ND
2017-11-147110564-01DBP2ND
2017-11-147110564-07DBP2ND
2017-11-147110564-03DBP2ND
2017-11-147110564-05DBP2ND
2017-11-147110564-02DBP2ND
2017-11-147110564-04DBP2ND
2018-02-138020455-01-DBP2ND
2018-02-138020455-03-DBP2ND
2018-02-138020455-06-DBP2ND
2018-02-138020455-02-DBP2ND
2018-02-138020455-04-DBP2ND
2018-02-138020455-07-DBP2ND
2018-02-138020455-05-DBP2ND
2018-02-138020455-08-DBP2ND
2018-05-158050721-06-DBP2ND
2018-05-158050721-02-DBP2ND
2018-05-158050721-03-DBP2ND
2018-05-158050721-08-DBP2ND
2018-05-158050721-05-DBP2ND
2018-05-158050721-04-DBP2ND
2018-05-158050721-07-DBP2ND
2018-05-158050721-01-DBP2ND
2018-08-148080664-08-DBP2ND
2018-08-148080664-07-DBP2ND
2018-08-148080664-06-DBP2ND
2018-08-148080664-05-DBP2ND
2018-08-148080664-03-DBP2ND
2018-08-148080664-02-DBP2ND
2018-08-148080664-01-DBP2ND
2018-08-148080664-04-DBP2ND
2018-11-088110332-01-DBP2ND
2018-11-088110332-04-DBP2ND
2018-11-088110332-03-DBP2ND
2018-11-088110332-05-DBP2ND
2018-11-088110332-08-DBP2ND
2018-11-088110332-07-DBP2ND
2018-11-088110332-02-DBP2ND
2018-11-088110332-06-DBP2ND
2019-02-149020596-01-DBP2ND
2019-02-149020596-05-DBP2ND
2019-02-149020596-02-DBP2ND
2019-02-149020596-06-DBP2ND
2019-02-149020596-07-DBP2ND
2019-02-149020596-04-DBP2ND
2019-02-149020596-08-DBP2ND
2019-02-149020596-03-DBP2ND
2019-05-149050680-08-DBP2ND
2019-05-149050680-05-DBP2ND
2019-05-149050680-01-DBP2ND
2019-05-149050680-03-DBP2ND
2019-05-149050680-04-DBP2ND
2019-05-149050680-DBP2ND
2019-05-149050680-07-DBP2ND
2019-05-149050680-06-DBP2ND
2019-08-149080764-02-DBP2ND
2019-08-149080764-04-DBP2ND
2019-08-149080764-01-DBP2ND
2019-08-149080764-07-DBP2ND
2019-08-149080764-03-DBP2ND
2019-08-149080764-08-DBP2ND
2019-08-149080764-05-DBP2ND
2019-08-149080764-06-DBP2ND
2019-11-139110583-03-DBP2ND
2019-11-139110583-06-DBP2ND
2019-11-139110583-04-DBP2ND
2019-11-139110583-02-DBP2ND
2019-11-139110583-07-DBP2ND
2019-11-139110583-05-DBP2ND
2019-11-139110583-08-DBP2ND
2019-11-139110583-01-DBP2ND