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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Manhattan

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

 

54

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
20150.719 ppb164ND - 3.60 ppb
20160.381 ppb163ND - 2.10 ppb
2017ND20ND
2018ND20ND
20191.75 ppb21ND - 3.50 ppb

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
2014-01-0831876ND
2014-01-0831875ND
2014-01-0831874ND
2014-01-0831873ND
2014-04-29104282ND
2014-04-29104278ND
2014-04-29104276ND
2014-04-29104271ND
2014-07-15152247ND
2014-07-15152246ND
2014-07-15152245ND
2014-07-15152244ND
2014-10-21217646ND
2014-10-21217640ND
2014-10-21217642ND
2014-10-21217644ND
2015-01-062588292.40 ppb
2015-01-062588282.80 ppb
2015-01-062588273.60 ppb
2015-01-062588262.70 ppb
2015-04-22317262ND
2015-04-22317261ND
2015-04-22317260ND
2015-04-22317259ND
2015-07-21371038ND
2015-07-21371040ND
2015-07-21371039ND
2015-07-21371037ND
2015-10-20418914ND
2015-10-20418913ND
2015-10-20418912ND
2015-10-20418911ND
2016-01-05470017ND
2016-01-05470016ND
2016-01-05470015ND
2016-01-05470014ND
2016-04-19531377ND
2016-04-19531378ND
2016-04-19531379ND
2016-04-19531380ND
2016-07-12582034ND
2016-07-12582033ND
2016-07-12582032ND
2016-07-12582031ND
2016-10-116421872.00 ppb
2016-10-116421862.10 ppb
2016-10-11642185ND
2016-10-116421842.00 ppb
2017-08-29830177ND
2017-08-29830176ND
2018-08-211030097ND
2018-08-211030096ND
2019-08-1312235393.50 ppb
2019-08-131223540ND