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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Allouez Waterworks

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.200 ppb165ND - 0.750 ppb
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
20190.169 ppb162ND - 1.70 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
2014-01-09765755ND
2014-01-09765756ND
2014-01-09765753ND
2014-01-09765754ND
2014-04-087787230.480 ppb
2014-04-087787240.690 ppb
2014-04-087787250.710 ppb
2014-04-087787220.750 ppb
2014-07-07801205ND
2014-07-07801203ND
2014-07-07801206ND
2014-07-078012040.570 ppb
2014-10-07823952ND
2014-10-07823953ND
2014-10-07823955ND
2014-10-07823954ND
2015-01-07838096ND
2015-01-07838094ND
2015-01-07838095ND
2015-01-07838093ND
2015-04-07852366ND
2015-04-07852368ND
2015-04-07852367ND
2015-04-07852365ND
2015-07-07869350ND
2015-07-07869347ND
2015-07-07869349ND
2015-07-07869348ND
2015-10-06887557ND
2015-10-06887556ND
2015-10-06887558ND
2015-10-06887555ND
2016-01-12901114ND
2016-01-12901116ND
2016-01-12901117ND
2016-01-12901115ND
2016-04-12914967ND
2016-04-12914966ND
2016-04-12914964ND
2016-04-12914965ND
2016-07-06931799ND
2016-07-06931800ND
2016-07-06931801ND
2016-07-11932360ND
2016-10-10952441ND
2016-10-10952439ND
2016-10-10952442ND
2016-10-10952440ND
2017-01-10969264ND
2017-01-10969263ND
2017-01-10969265ND
2017-01-10969262ND
2017-04-11982608ND
2017-04-11982609ND
2017-04-11982607ND
2017-04-11982606ND
2017-07-111003298ND
2017-07-111003296ND
2017-07-111003297ND
2017-07-111003299ND
2017-10-091023245ND
2017-10-091023244ND
2017-10-091023247ND
2017-10-091023246ND
2018-01-091036400ND
2018-01-091036401ND
2018-01-091036398ND
2018-01-091036399ND
2018-04-101049519ND
2018-04-101049521ND
2018-04-101049518ND
2018-04-101049520ND
2018-07-101065949ND
2018-07-101065948ND
2018-07-101065951ND
2018-07-101065950ND
2018-10-101086468ND
2018-10-101086469ND
2018-10-101086467ND
2018-10-101086470ND
2019-01-071099654ND
2019-01-071099652ND
2019-01-071099655ND
2019-01-071099653ND
2019-04-101114695ND
2019-04-1011146921.000 ppb
2019-04-101114694ND
2019-04-101114693ND
2019-07-081132356ND
2019-07-081132357ND
2019-07-081132359ND
2019-07-0811323581.70 ppb
2019-10-101154452ND
2019-10-101154451ND
2019-10-101154449ND
2019-10-101154450ND