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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Tarrytown Water Supply

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

 

84

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
20140.146 ppb161ND - 2.34 ppb
20150.0250 ppb801ND - 2.00 ppb
20160.488 ppb162ND - 4.10 ppb
2017ND160ND
20180.110 ppb201ND - 2.20 ppb
20190.125 ppb161ND - 2.00 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
2014-02-20420-75095-4-DBP2ND
2014-02-20420-75095-3-DBP2ND
2014-02-20420-75095-1-DBP2ND
2014-02-20420-75095-2-DBP2ND
2014-05-22420-78046-4-DBP2ND
2014-05-22420-78046-3-DBP22.34 ppb
2014-05-22420-78046-1-DBP2ND
2014-05-22420-78046-2-DBP2ND
2014-08-21420-81566-1-DBP2ND
2014-08-21420-81449-2-DBP2ND
2014-08-21420-81449-3-DBP2ND
2014-08-21420-81449-1-DBP2ND
2014-11-143140227-DBP2ND
2014-11-143140228-DBP2ND
2014-11-143140229-DBP2ND
2014-11-143140230-DBP2ND
2016-02-113399365-70-DBP24.10 ppb
2016-02-113399367-72-DBP2ND
2016-02-113399366-71-DBP2ND
2016-02-113399364-69-DBP23.70 ppb
2016-05-103627102DBP2ND
2016-05-103627104DBP2ND
2016-05-103627101DBP2ND
2016-05-103627103DBP2ND
2016-08-103518484-88-DBP2ND
2016-08-103518482-86-DBP2ND
2016-08-103518483-87-DBP2ND
2016-08-103518481-85-DBP2ND
2016-11-073581326-22-DBP2ND
2016-11-073581325-21-DBP2ND
2016-11-073581328-24-DBP2ND
2016-11-073581327-23-DBP2ND
2017-02-083634471-75-DBP2ND
2017-02-083634474-78-DBP2ND
2017-02-083634473-77-DBP2ND
2017-02-083634472-76-DBP2ND
2017-05-113693074-78-DBP2ND
2017-05-113693075-79-DBP2ND
2017-05-113693076-80-DBP2ND
2017-05-113693077-81-DBP2ND
2017-08-083751050-54-DBP2ND
2017-08-083751049-53-DBP2ND
2017-08-083751051-55-DBP2ND
2017-08-103751052-56-DBP2ND
2017-11-0938182394-43DBP2ND
2017-11-093818238-42DBP2ND
2017-11-093818240-44DBP2ND
2017-11-093818237-41DBP2ND
2018-02-063866181-85DBP2ND
2018-02-063866183-87DBP2ND
2018-02-063866184-88DBP2ND
2018-02-063866182-86DBP2ND
2018-05-083931143-39-DBP2ND
2018-05-083931142-38-DBP2ND
2018-05-083931141-37-DBP2ND
2018-05-083931144-40-DBP2ND
2018-08-074017509-10-DBP2ND
2018-08-074017507-08-DBP2ND
2018-08-074017511-12-DBP2ND
2018-08-074017505-06-DBP2ND
2018-08-154024547-46-DBP2ND
2018-08-154024549-48-DBP22.20 ppb
2018-08-154024545-44-DBP2ND
2018-08-154024543-42-DBP2ND
2018-11-054111335-34-DBP2ND
2018-11-054111337-36-DBP2ND
2018-11-054111331-30-DBP2ND
2018-11-054111333-32-DBP2ND
2019-02-054189663-59-DBP2ND
2019-02-054189662-58-DBP2ND
2019-02-054189661-57-DBP2ND
2019-02-054189664-60-DBP2ND
2019-05-074285918-19-DBP2ND
2019-05-074285924-25-DBP2ND
2019-05-074285922-23-DBP2ND
2019-05-074285920-21-DBP2ND
2019-08-204394294-95-DBP2ND
2019-08-204394298-99-DBP22.00 ppb
2019-08-204394296-97-DBP2ND
2019-08-204394292-93-DBP2ND
2019-11-064478600-96-DBP2ND
2019-11-064478598-94-DBP2ND
2019-11-064478599-95-DBP2ND
2019-11-064478601-97-DBP2ND