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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Glendale Water Supply Corporation

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.64 ppb84ND - 5.00 ppb
2015ND80ND
20161.08 ppb81ND - 8.60 ppb
2017ND80ND
20182.10 ppb881.50 ppb - 2.60 ppb
20190.375 ppb82ND - 1.60 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
2014-02-20Q14056550022.20 ppb
2014-02-20Q1405655001ND
2014-05-15Q1416518004ND
2014-05-15Q1416518003ND
2014-09-19Q1446481002ND
2014-09-19Q14464810015.00 ppb
2014-12-02Q14578700033.40 ppb
2014-12-02Q14578700022.50 ppb
2015-03-12Q1509271010ND
2015-03-12Q1509271009ND
2015-06-18Q1523021001ND
2015-06-18Q1523021002ND
2015-09-03Q1534150002ND
2015-09-03Q1534150001ND
2015-12-14Q1549639005ND
2015-12-14Q1549639006ND
2016-02-17Q1607046002ND
2016-02-17Q1607046001ND
2016-06-13Q1623595011ND
2016-06-13Q1623595010ND
2016-09-30Q1641604002ND
2016-09-30Q16416040018.60 ppb
2016-12-15Q1654712001ND
2016-12-15Q1654712002ND
2017-03-03Q1709134009ND
2017-03-03Q1709134008ND
2017-05-19Q1720689001ND
2017-05-19Q1720689002ND
2017-08-10Q1734708002ND
2017-08-10Q1734708001ND
2017-12-05Q1762653002ND
2017-12-05Q1762653001ND
2018-02-14Q18065420022.00 ppb
2018-02-14Q18065420011.50 ppb
2018-05-30Q18217870012.30 ppb
2018-05-30Q18217870072.60 ppb
2018-08-21Q18333900012.20 ppb
2018-08-21Q18333900022.50 ppb
2018-11-15Q18466580021.90 ppb
2018-11-15Q18466580011.80 ppb
2019-03-26Q1912352001ND
2019-03-26Q1912352002ND
2019-06-27Q1940974002ND
2019-06-27Q19409740011.40 ppb
2019-09-17Q1966694002ND
2019-09-17Q19666940011.60 ppb
2019-12-18Q1980817005ND
2019-12-18Q1980817006ND