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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Paw Penn District

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

 

20

Samples

0

Samples exceeding legal limit (MCL)

4

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
2018ND40ND
20190.306 ppb164ND - 1.60 ppb

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
2018-10-088102701-01ND
2018-10-088102701-04ND
2018-10-088102701-02ND
2018-10-088102701-03ND
2019-01-0742498301ND
2019-01-0742498401ND
2019-01-0742499801ND
2019-01-0742499701ND
2019-04-0843658601ND
2019-04-08436587011.000 ppb
2019-04-0843658801ND
2019-04-0843658901ND
2019-07-0845018401ND
2019-07-0845016501ND
2019-07-0845018301ND
2019-07-08450166011.10 ppb
2019-10-07468319011.20 ppb
2019-10-0746832101ND
2019-10-0746832201ND
2019-10-07468320011.60 ppb