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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

New York American Water - Merrick

Dichloroacetic 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

 

24

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
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND240ND
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-197045682002ND
2018-03-197045682004ND
2018-03-197045682001ND
2018-03-197045682006ND
2018-03-197045682005ND
2018-03-197045682003ND
2018-06-147055013006ND
2018-06-147055013005ND
2018-06-147055013004ND
2018-06-147055013003ND
2018-06-147055013001ND
2018-06-147055013002ND
2018-09-177064988002ND
2018-09-177064988006ND
2018-09-177064988003ND
2018-09-177064988004ND
2018-09-177064988005ND
2018-09-177064988001ND
2018-12-1042307701ND
2018-12-1042305401ND
2018-12-1042306301ND
2018-12-1042305601ND
2018-12-1042305501ND
2018-12-1042305301ND