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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Mustang

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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND20ND
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND

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
2012-03-071105211ND
2013-11-121255165ND
2013-11-121255163ND
2014-02-111276878ND
2014-02-111276876ND
2014-05-131300976ND
2014-05-131300973ND
2014-08-121325558ND
2014-08-121325559ND
2014-12-034L04006-02ND
2014-12-034L04006-01ND
2015-02-255B25089-02ND
2015-02-255B25089-01ND
2015-05-135E13063-02RE1ND
2015-05-135E13063-01ND
2015-08-055H05120-02ND
2015-08-055H05120-01ND
2015-11-185K18128-02ND
2015-11-185K18128-01ND
2016-02-106B10104-02ND
2016-02-106B10104-01ND
2016-05-116E11116-02RE1ND
2016-05-116E11116-01ND
2016-08-106H10103-02ND
2016-08-106H10103-01ND
2016-11-096K09157-01ND
2016-11-096K09157-02ND
2017-02-157B15129-02ND
2017-02-157B15129-01ND
2017-05-177E17104-02ND
2017-05-177E17104-01ND
2017-08-167H16112-02ND
2017-08-167H16112-01ND
2017-11-157K15159-02ND
2017-11-157K15159-01ND