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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Ajax Beulah Water System

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

 

68

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND20ND
2016ND120ND
20170.850 ppb164ND - 4.40 ppb
20180.563 ppb168ND - 1.30 ppb
20190.923 ppb1812ND - 2.20 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
2014-08-271329587ND
2014-08-271329586ND
2014-08-271329587ND
2014-08-271329586ND
2015-12-151451593ND
2015-12-151451593ND
2016-08-031512654ND
2016-08-031512653ND
2016-08-031512654ND
2016-08-031512653ND
2016-09-1935266236001ND
2016-09-1935266236002ND
2016-09-1935266236002ND
2016-09-1935266236001ND
2016-12-2835286278001ND
2016-12-2835286278002ND
2016-12-2835286278002ND
2016-12-2835286278001ND
2017-03-0235298741017ND
2017-03-0235298741018ND
2017-03-0235298741018ND
2017-03-0235298741017ND
2017-06-2735321385002ND
2017-06-2735321385001ND
2017-06-2735321385001ND
2017-06-2735321385002ND
2017-09-14353358480102.40 ppb
2017-09-14353358480094.40 ppb
2017-09-14353358480102.40 ppb
2017-09-14353358480094.40 ppb
2017-12-1435363577002ND
2017-12-1435363577001ND
2017-12-1435363577001ND
2017-12-1435363577002ND
2018-03-1535380713002ND
2018-03-1535380713001ND
2018-03-1535380713002ND
2018-03-1535380713001ND
2018-06-25354010750021.000 ppb
2018-06-25354010750011.000 ppb
2018-06-25354010750021.000 ppb
2018-06-25354010750011.000 ppb
2018-09-1835418773001ND
2018-09-1835418773002ND
2018-09-1835418773001ND
2018-09-1835418773002ND
2018-12-17354384250021.30 ppb
2018-12-17354384250021.30 ppb
2018-12-17354384250011.20 ppb
2018-12-17354384250011.20 ppb
2019-03-2135457043002ND
2019-03-21354570430011.30 ppb
2019-03-21354570430011.30 ppb
2019-03-2135457043002ND
2019-04-1135461523001ND
2019-04-1135461523001ND
2019-06-04354739430021.20 ppb
2019-06-04354739430021.20 ppb
2019-06-0435473943001ND
2019-06-0435473943001ND
2019-09-25355007530020.910 ppb
2019-09-25355007530011.50 ppb
2019-09-25355007530011.50 ppb
2019-09-25355007530020.910 ppb
2019-12-19355203820011.20 ppb
2019-12-19355203820022.20 ppb
2019-12-19355203820011.20 ppb
2019-12-19355203820022.20 ppb