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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Monticello Water Department

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

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND130ND
2015ND20ND
2016ND20ND
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

Date Lab ID Result
2014-02-1714051004301ND
2014-02-1714051004401ND
2014-02-1714051004501ND
2014-02-1714051004201ND
2014-05-2014142002701ND
2014-05-2014142002801ND
2014-05-2014142003001ND
2014-05-2014142002901ND
2014-08-2014233011201ND
2014-08-2014233011301ND
2014-08-2014233011101ND
2014-08-2014233011401ND
2014-11-1914324007801ND
2015-07-2215204000101ND
2015-12-0115337001801ND
2016-08-1616230000801ND
2016-11-0916314002601ND
2017-07-1917201000901ND
2017-10-1817292006301ND
2018-07-3018214000401ND
2018-10-2918305001101ND
2019-08-2119233004001ND
2019-10-2819303001601ND