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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Lihue-Kapaa

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

 

73

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND160ND
2016ND80ND
2017ND170ND
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
2015-02-24201502260486ND
2015-02-24201502260487ND
2015-02-24201502260488ND
2015-02-24201502260485ND
2015-05-18201505200378ND
2015-05-18201505200379ND
2015-05-18201505200380ND
2015-05-18201505200382ND
2015-08-10C15-08-0157AND
2015-08-10C15-08-0158AND
2015-08-10C15-08-0159AND
2015-08-10C15-08-0160AND
2015-11-16C15-11-0129AND
2015-11-16C15-11-0132AND
2015-11-16C15-11-0131AND
2015-11-16C15-11-0130AND
2016-02-09ND
2016-02-09ND
2016-05-03ND
2016-05-03ND
2016-08-02ND
2016-08-02ND
2016-11-15ND
2016-11-15ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-05-02ND
2017-08-28ND
2017-08-28ND
2017-08-28ND
2017-08-28ND
2017-08-28ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2017-11-07ND
2018-02-14C18-02-0048AND
2018-02-14C18-02-0047AND
2018-02-14C18-02-0046AND
2018-02-14C18-02-0049AND
2018-05-14C18-05-0074AND
2018-05-14C18-05-0073AND
2018-05-14C18-05-0072AND
2018-05-14C18-05-0075AND
2018-08-08C18-08-0156AND
2018-08-08C18-08-0158AND
2018-08-08C18-08-0155AND
2018-08-08C18-08-0157AND
2018-11-15201811160642ND
2018-11-15201811160640ND
2018-11-15201811160639ND
2018-11-15201811160641ND
2019-02-04C19-02-0056AND
2019-02-04C19-02-0054AND
2019-02-04C19-02-0055AND
2019-02-04C19-02-0057AND
2019-05-06C19-05-0038AND
2019-05-06C19-05-0037AND
2019-05-06C19-05-0039AND
2019-05-06C19-05-0036AND
2019-08-05C19-08-0041AND
2019-08-05C19-08-0042AND
2019-08-05C19-08-0039AND
2019-08-05C19-08-0040AND
2019-11-12C19-11-0053AND
2019-11-12C19-11-0051AND
2019-11-12C19-11-0054AND
2019-11-12C19-11-0052AND