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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

United Wappinger Water Improvement District

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

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
20150.750 ppb62ND - 2.50 ppb
20160.763 ppb85ND - 1.60 ppb
2017ND80ND
2018ND80ND
20190.596 ppb121ND - 7.15 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
2014-08-06080614123ND
2014-09-1709171431ND
2014-12-2212221412AND
2014-12-2212221412ND
2015-03-24RW15466ND
2015-03-24RW15465ND
2015-06-24UW1510192.50 ppb
2015-06-24UW1510202.00 ppb
2015-09-08CM151698ND
2015-09-08CM151699ND
2016-03-15UW16433ND
2016-03-15UW164321.60 ppb
2016-06-29RW1614171.40 ppb
2016-06-29RW1614181.10 ppb
2016-09-20CP1624531.000 ppb
2016-09-20CP1624541.000 ppb
2016-12-07CA164300ND
2016-12-07CA164299ND
2017-03-29CA174537ND
2017-03-29CA174538ND
2017-06-13CA171199ND
2017-06-13CA171198ND
2017-09-12CP172253ND
2017-09-12CP172252ND
2017-12-05UW173011ND
2017-12-05UW173010ND
2018-03-13CA180455ND
2018-03-13CA180454ND
2018-06-13UW181133ND
2018-06-13UW181134ND
2018-09-21CP182219ND
2018-09-21CP182218ND
2018-12-10CC13391ND
2018-12-10CC13392ND
2019-02-27MP190431ND
2019-02-27MP190430ND
2019-06-10UW191296ND
2019-06-10UW191297ND
2019-07-17U9G0035-03PND
2019-07-17U9G0035-02PND
2019-08-06CD80764ND
2019-08-06CD80763ND
2019-10-15U9J0037-037.15 ppb
2019-10-15U9J0037-02ND
2019-11-25CE68895ND
2019-11-25CE68894ND