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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Liberty Utilities

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.192 ppb121ND - 2.30 ppb
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-01-2214023009401ND
2014-01-2214023009201ND
2014-01-2214023009301ND
2014-01-2214023009101ND
2014-05-0514128007001ND
2014-05-05141280072012.30 ppb
2014-05-0514128007101ND
2014-05-0514128007301ND
2014-09-0914254003701ND
2014-09-0914254003801ND
2014-09-0914254004001ND
2014-09-0914254003901ND
2015-04-2115113011801ND
2015-04-2115113011901ND
2015-07-2215204000401ND
2015-07-2215204000501ND
2016-04-2116113001601ND
2016-04-2116113001501ND
2016-08-1516230000501ND
2016-08-1516230000401ND
2017-04-1717109000501ND
2017-04-1717109000401ND
2017-08-1517229003701ND
2017-08-1517229003801ND
2018-05-2118144008901ND
2018-05-2118144009001ND
2018-07-1718200002601ND
2018-07-1718200002701ND
2019-04-1719108004701ND
2019-04-1719108004801ND
2019-08-2119233007001ND
2019-08-2119233007101ND