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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Keokuk Municipal Water Works

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
20140.375 ppb163ND - 2.00 ppb
2015ND160ND
2016ND160ND
20170.125 ppb161ND - 2.00 ppb
2018ND160ND
2019ND160ND

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
2014-01-142030320ND
2014-01-142030321ND
2014-01-142030332ND
2014-01-142030337ND
2014-04-082044976ND
2014-04-0820449652.00 ppb
2014-04-082044963ND
2014-04-0820449642.00 ppb
2014-07-092062168ND
2014-07-092062169ND
2014-07-0920621702.00 ppb
2014-07-092062171ND
2014-10-082085105ND
2014-10-082085103ND
2014-10-082085108ND
2014-10-082085107ND
2015-01-13OE209721ND
2015-01-13OE209724ND
2015-01-13OE209723ND
2015-01-13OE209722ND
2015-04-07OE228563ND
2015-04-07OE228564ND
2015-04-07OE228565ND
2015-04-07OE228566ND
2015-07-08OE265046ND
2015-07-08OE265048ND
2015-07-08OE265049ND
2015-07-08OE265047ND
2015-10-06OE302892ND
2015-10-06OE302891ND
2015-10-06OE302889ND
2015-10-06OE302890ND
2016-01-06OE332984ND
2016-01-06OE332983ND
2016-01-06OE332985ND
2016-01-06OE332982ND
2016-04-05OE362306ND
2016-04-05OE362304ND
2016-04-05OE362307ND
2016-04-05OE362305ND
2016-07-11OE399807ND
2016-07-11OE399808ND
2016-07-11OE399810ND
2016-07-11OE399809ND
2016-10-04OE436785ND
2016-10-04OE436783ND
2016-10-04OE436782ND
2016-10-04OE436784ND
2017-01-10OE469424ND
2017-01-10OE469421ND
2017-01-10OE469422ND
2017-01-10OE469423ND
2017-04-04OE498092ND
2017-04-04OE498094ND
2017-04-04OE498093ND
2017-04-04OE498095ND
2017-07-11OE535855ND
2017-07-11OE535852ND
2017-07-11OE535854ND
2017-07-11OE535853ND
2017-10-10OE576450ND
2017-10-10OE5764522.00 ppb
2017-10-10OE576451ND
2017-10-10OE576453ND
2018-01-09OE609216ND
2018-01-09OE609215ND
2018-01-09OE609214ND
2018-01-09OE609213ND
2018-04-10OE643812ND
2018-04-10OE643809ND
2018-04-10OE643810ND
2018-04-10OE643811ND
2018-07-09OE680783ND
2018-07-09OE680782ND
2018-07-09OE680781ND
2018-07-09OE680780ND
2018-10-10OE725678ND
2018-10-10OE725679ND
2018-10-10OE725680ND
2018-10-10OE725681ND
2019-01-08OE758162ND
2019-01-08OE758163ND
2019-01-08OE758164ND
2019-01-08OE758165ND
2019-04-09OE792328ND
2019-04-09OE792331ND
2019-04-09OE792330ND
2019-04-09OE792329ND
2019-07-08OE831269ND
2019-07-08OE831271ND
2019-07-08OE831270ND
2019-07-08OE831268ND
2019-10-08OE876872ND
2019-10-08OE876871ND
2019-10-08OE876870ND
2019-10-08OE876869ND