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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Purcellville, Town of

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
20150.413 ppb82ND - 1.90 ppb
20160.838 ppb85ND - 1.70 ppb
20171.09 ppb85ND - 2.00 ppb
20180.950 ppb85ND - 1.90 ppb
20190.150 ppb81ND - 1.20 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
2014-03-31E131208345ND
2014-03-31E131208333ND
2014-05-07E140304167ND
2014-05-07E140304166ND
2014-07-31E140606695ND
2014-07-31E140606691ND
2014-12-16E140904339ND
2014-12-16E140904330ND
2015-03-02VA010-DCLSND
2015-03-02VA010-DCLSND
2015-05-06VA010-DCLSND
2015-05-06VA010-DCLSND
2015-08-13VA010-DCLSND
2015-08-13VA010-DCLSND
2015-11-09VA010-DCLS1.40 ppb
2015-11-09VA010-DCLS1.90 ppb
2016-02-08E151205958ND
2016-02-08E151205961ND
2016-05-12E160305759ND
2016-05-12E1603057551.30 ppb
2016-08-09E1607003281.30 ppb
2016-08-09E1607003261.70 ppb
2016-11-10E1608054631.40 ppb
2016-11-10E1608054591.000 ppb
2017-02-08E1612013321.60 ppb
2017-02-08E161201337ND
2017-05-10E170300441ND
2017-05-10E170300440ND
2017-08-10E1705040301.70 ppb
2017-08-10E1705040351.80 ppb
2017-11-08E1709019762.00 ppb
2017-11-08E1709019711.60 ppb
2018-02-15E1801003361.40 ppb
2018-02-15E1801003281.50 ppb
2018-05-14E1803038631.60 ppb
2018-05-14E1803038651.20 ppb
2018-08-15E180601964ND
2018-08-15E1806019681.90 ppb
2018-11-14E180901397ND
2018-11-14E180901399ND
2019-02-13E181104013ND
2019-02-13E181104014ND
2019-05-14E190304838ND
2019-05-14E190304840ND
2019-08-13E190609956ND
2019-08-13E1906099601.20 ppb
2019-11-13E191000262ND
2019-11-13E191000260ND