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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Blair, City 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.

MORE ABOUT THIS CONTAMINANT

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
20190.334 ppb81ND - 2.67 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
2014-01-13283278ND
2014-04-14294818ND
2014-07-14311936ND
2014-10-14330678ND
2015-02-09346531ND
2015-02-09346530ND
2015-05-11361712ND
2015-05-11361713ND
2015-08-10378744ND
2015-08-10378745ND
2015-11-09393692ND
2015-11-09393691ND
2016-02-08ND
2016-02-08ND
2016-05-09ND
2016-05-09ND
2016-08-08ND
2016-08-08ND
2016-11-15ND
2016-11-15ND
2017-02-16ND
2017-02-16ND
2017-05-09ND
2017-05-09ND
2017-08-14ND
2017-08-14ND
2017-11-13ND
2017-11-13ND
2018-02-13534070ND
2018-02-13534069ND
2018-05-14549790ND
2018-05-14549791ND
2018-08-16566999ND
2018-08-16567000ND
2018-11-13583354ND
2018-11-13583355ND
2019-02-11595212ND
2019-02-11595213ND
2019-05-136058082.67 ppb
2019-05-13605809ND
2019-08-13628224ND
2019-08-13628225ND
2019-11-12644359ND
2019-11-12644358ND