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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Rockaway Twp Water Department

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0625 ppb161ND - 1.000 ppb
2015ND160ND
20160.469 ppb163ND - 3.60 ppb
20170.181 ppb161ND - 2.90 ppb
2018ND160ND
20190.133 ppb161ND - 2.12 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
2014-03-03340305024ND
2014-03-03340305022ND
2014-03-03340305025ND
2014-03-03340305023ND
2014-06-02340604018ND
2014-06-023406040211.000 ppb
2014-06-02340604020ND
2014-06-02340604019ND
2014-09-08340909052ND
2014-09-08340909043ND
2014-09-08340909054ND
2014-09-08340909053ND
2014-12-15341216061ND
2014-12-15341216058ND
2014-12-15341216060ND
2014-12-15341216059ND
2015-03-09350310145ND
2015-03-09350310144ND
2015-03-09350310146ND
2015-03-09350310147ND
2015-06-08N026904-06ND
2015-06-08N026904-07ND
2015-06-08N026904-05ND
2015-06-08N026904-08ND
2015-09-01N029004-11ND
2015-09-01N029004-10ND
2015-09-01N029004-08ND
2015-09-01N029004-09ND
2015-11-30N031231-03ND
2015-11-30N031231-02ND
2015-11-30N031231-01ND
2015-11-30N031231-04ND
2016-03-01N033308-02ND
2016-03-01N033308-03ND
2016-03-01N033308-04ND
2016-03-01N033308-01ND
2016-06-14N036408-033.60 ppb
2016-06-14N036408-042.70 ppb
2016-06-14N036408-02ND
2016-06-14N036408-011.20 ppb
2016-09-06N039698-03ND
2016-09-06N039698-04ND
2016-09-06N039698-02ND
2016-09-06N039698-01ND
2016-12-05N043277-01ND
2016-12-05N043277-03ND
2016-12-05N043277-02ND
2016-12-05N043277-04ND
2017-03-07N046704-03ND
2017-03-07N046704-02ND
2017-03-07N046704-01ND
2017-03-07N046705-01ND
2017-06-13N050782-02ND
2017-06-13N050782-04ND
2017-06-13N050782-03ND
2017-06-13N050782-01ND
2017-09-25N055008-04ND
2017-09-25N055008-03ND
2017-09-25N055008-01ND
2017-09-25N055008-02ND
2017-12-05N057499-012.90 ppb
2017-12-05N057499-02ND
2017-12-05N057499-04ND
2017-12-05N057499-03ND
2018-03-06380306198ND
2018-03-06380306199ND
2018-03-06380306197ND
2018-03-06380306200ND
2018-06-10380612229ND
2018-06-10380612230ND
2018-06-10380612231ND
2018-06-10380612228ND
2018-09-04380904210ND
2018-09-04380904207ND
2018-09-04380904208ND
2018-09-04380904209ND
2018-12-10381211101ND
2018-12-10381211098ND
2018-12-10381211099ND
2018-12-10381211100ND
2019-03-13390313201.2ND
2019-03-13390313200.2ND
2019-03-13390313203.2ND
2019-03-13390313202.2ND
2019-06-12390612134.2ND
2019-06-12390612136.22.12 ppb
2019-06-12390612135.2ND
2019-06-12390612137.2ND
2019-09-11390911242ND
2019-09-11390911243ND
2019-09-11390911245ND
2019-09-11390911244ND
2019-12-04391204144ND
2019-12-04391204146ND
2019-12-04391204145ND
2019-12-04391204143ND