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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Maple Bluff Waterworks

NOTE: Maple Bluff Waterworks purchases water from Madison Water Utility which is required to test for monochloroacetic acid. Sample information shown below was taken by Madison Water Utility.

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND20ND
2016ND40ND
2017ND20ND
2018ND20ND
2019ND20ND

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

NOTE: Maple Bluff Waterworks purchases water from Madison Water Utility which is required to test for monochloroacetic acid. Sample information shown below was taken by Madison Water Utility.

Date Lab ID Result
2014-01-22767488ND
2014-01-22767487ND
2014-04-22782090ND
2014-04-22782091ND
2014-07-15803103ND
2014-07-15803104ND
2014-10-14825838ND
2014-10-14825837ND
2015-01-20839971ND
2015-01-20839972ND
2015-04-21855409ND
2015-04-21855410ND
2015-07-21872299ND
2015-07-21872302ND
2015-10-20889999ND
2015-10-20890000ND
2016-01-19902146ND
2016-01-19902145ND
2016-04-19916889ND
2016-04-19916892ND
2016-07-19934712ND
2016-07-19934714ND
2016-10-18954227ND
2016-10-18954228ND
2017-01-24970984ND
2017-01-24970985ND
2017-04-18984288ND
2017-04-18984289ND
2017-07-181004685ND
2017-07-181004684ND
2017-10-171024701ND
2017-10-171024700ND
2018-01-171037649ND
2018-01-171037650ND
2018-04-173914789-90ND
2018-04-173914791-92ND
2018-07-173991851-52ND
2018-07-173991853-54ND
2018-10-164091546-47ND
2018-10-164091548-49ND
2019-01-161101692ND
2019-01-161101693ND
2019-04-161115555ND
2019-04-161115556ND
2019-07-161134760ND
2019-07-161134761ND
2019-10-151155280ND
2019-10-151155279ND