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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Point Wilhite Ws

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

 

118

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND240ND
2015ND240ND
2016ND220ND
20170.563 ppb162ND - 4.50 ppb
20180.825 ppb162ND - 6.60 ppb
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
2014-03-031281922ND
2014-03-031281923ND
2014-03-031281924ND
2014-03-031281922ND
2014-03-031281923ND
2014-03-031281924ND
2014-05-121300707ND
2014-05-121300708ND
2014-05-121300709ND
2014-05-121300707ND
2014-05-121300708ND
2014-05-121300709ND
2014-08-031323140ND
2014-08-031323141ND
2014-08-031323142ND
2014-08-031323140ND
2014-08-031323141ND
2014-08-031323142ND
2014-11-041347159ND
2014-11-041347160ND
2014-11-041347161ND
2014-11-041347159ND
2014-11-041347160ND
2014-11-041347161ND
2015-02-021369383ND
2015-02-021369384ND
2015-02-021369385ND
2015-02-021369383ND
2015-02-021369384ND
2015-02-021369385ND
2015-04-301391292ND
2015-04-301391293ND
2015-04-301391294ND
2015-04-301391292ND
2015-04-301391293ND
2015-04-301391294ND
2015-08-031415854ND
2015-08-031415855ND
2015-08-031415856ND
2015-08-031415854ND
2015-08-031415855ND
2015-08-031415856ND
2015-11-041441685ND
2015-11-041441686ND
2015-11-041441687ND
2015-11-041441685ND
2015-11-041441686ND
2015-11-041441687ND
2016-02-011463914ND
2016-02-011463915ND
2016-02-011463916ND
2016-02-011463914ND
2016-02-011463915ND
2016-02-011463916ND
2016-05-031487874ND
2016-05-031487875ND
2016-05-031487876ND
2016-05-031487874ND
2016-05-031487875ND
2016-05-031487876ND
2016-08-011512211ND
2016-08-011512212ND
2016-08-011512213ND
2016-08-011512211ND
2016-08-011512212ND
2016-08-011512213ND
2016-11-301545264ND
2016-11-301545265ND
2016-11-301545264ND
2016-11-301545265ND
2017-02-0935294548021ND
2017-02-0935294548022ND
2017-02-0935294548021ND
2017-02-0935294548022ND
2017-05-1635312626001ND
2017-05-1635312626002ND
2017-05-1635312626001ND
2017-05-1635312626002ND
2017-08-1535331285001ND
2017-08-15353312850024.50 ppb
2017-08-1535331285001ND
2017-08-15353312850024.50 ppb
2017-11-2735350759001ND
2017-11-2735350759002ND
2017-11-2735350759001ND
2017-11-2735350759002ND
2018-02-2235376199001ND
2018-02-2235376199002ND
2018-02-2235376199001ND
2018-02-2235376199002ND
2018-05-2935395207001ND
2018-05-2935395207002ND
2018-05-2935395207001ND
2018-05-2935395207002ND
2018-08-20354127840016.60 ppb
2018-08-2035412784002ND
2018-08-20354127840016.60 ppb
2018-08-2035412784002ND
2018-11-1935432386001ND
2018-11-1935432386002ND
2018-11-1935432386001ND
2018-11-1935432386002ND
2019-02-2535450961001ND
2019-02-2535450961002ND
2019-02-2535450961001ND
2019-02-2535450961002ND
2019-05-2035470225001ND
2019-05-2035470225002ND
2019-05-2035470225001ND
2019-05-2035470225002ND
2019-08-1935491955001ND
2019-08-1935491955002ND
2019-08-1935491955001ND
2019-08-1935491955002ND
2019-11-1835514081001ND
2019-11-1835514081002ND
2019-11-1835514081001ND
2019-11-1835514081002ND