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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Menasha Elec & Water Util

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

 

95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.177 ppb153ND - 0.940 ppb
2015ND160ND
20160.563 ppb164ND - 2.80 ppb
20170.731 ppb166ND - 2.30 ppb
20181.12 ppb168ND - 3.60 ppb
20190.356 ppb164ND - 1.50 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
2014-02-05769125ND
2014-02-057691280.830 ppb
2014-02-057691270.880 ppb
2014-02-057691260.940 ppb
2014-05-06784185ND
2014-05-06784183ND
2014-05-06784182ND
2014-05-06784184ND
2014-08-11809410ND
2014-08-11809409ND
2014-08-11809408ND
2014-08-11809407ND
2014-11-05830099ND
2014-11-05830102ND
2014-11-05830101ND
2015-02-04841977ND
2015-02-04841979ND
2015-02-04841978ND
2015-02-04841980ND
2015-05-06858514ND
2015-05-06858513ND
2015-05-06858515ND
2015-05-06858512ND
2015-08-04875093ND
2015-08-04875092ND
2015-08-04875091ND
2015-08-04875094ND
2015-11-03892440ND
2015-11-03892438ND
2015-11-03892439ND
2015-11-03892437ND
2016-02-09904684ND
2016-02-09904682ND
2016-02-09904681ND
2016-02-09904683ND
2016-05-09920133ND
2016-05-09920136ND
2016-05-09920135ND
2016-05-09920134ND
2016-08-039371172.80 ppb
2016-08-039371152.60 ppb
2016-08-039371182.30 ppb
2016-08-039371161.30 ppb
2016-11-02957097ND
2016-11-02957096ND
2016-11-02957098ND
2016-11-02957099ND
2017-02-079726982.30 ppb
2017-02-079726972.30 ppb
2017-02-079726962.20 ppb
2017-02-079726992.00 ppb
2017-05-09987483ND
2017-05-09987481ND
2017-05-09987484ND
2017-05-09987482ND
2017-08-071009154ND
2017-08-071009152ND
2017-08-0710091531.40 ppb
2017-08-0710091511.50 ppb
2017-11-061028164ND
2017-11-061028163ND
2017-11-061028165ND
2017-11-061028162ND
2018-02-0510395913.60 ppb
2018-02-0510395923.30 ppb
2018-02-0510395933.10 ppb
2018-02-0510395903.00 ppb
2018-05-071054152ND
2018-05-071054151ND
2018-05-071054153ND
2018-05-071054150ND
2018-08-061071674ND
2018-08-061071676ND
2018-08-061071675ND
2018-08-061071677ND
2018-11-0610913310.860 ppb
2018-11-0610913301.000 ppb
2018-11-0610913281.20 ppb
2018-11-0610913291.80 ppb
2019-02-051104091ND
2019-02-051104094ND
2019-02-051104093ND
2019-02-051104092ND
2019-05-061119336ND
2019-05-061119335ND
2019-05-061119337ND
2019-05-061119338ND
2019-08-0511385831.40 ppb
2019-08-0511385821.40 ppb
2019-08-0511385811.40 ppb
2019-08-0511385841.50 ppb
2019-11-041158881ND
2019-11-041158880ND
2019-11-041158879ND
2019-11-041158878ND