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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

Pennsylvania American Norristown

Dibromoacetic 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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

20

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
20180.788 ppb85ND - 1.30 ppb
20191.03 ppb3215ND - 3.70 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2018-10-09413009011.30 ppb
2018-10-09413015011.30 ppb
2018-10-0941301201ND
2018-10-0941301001ND
2018-10-0941300601ND
2018-10-09413013011.30 ppb
2018-10-09413008011.20 ppb
2018-10-09413007011.20 ppb
2019-01-0942488101ND
2019-01-0942488401ND
2019-01-0942488901ND
2019-01-0942488001ND
2019-01-0942488201ND
2019-01-0942488701ND
2019-01-0942488301ND
2019-01-0942488601ND
2019-04-0343647401ND
2019-04-0343647701ND
2019-04-0343647101ND
2019-04-0343647301ND
2019-04-0343647801ND
2019-04-0343647501ND
2019-04-0343647201ND
2019-04-0343647601ND
2019-07-09450015011.70 ppb
2019-07-09450024011.50 ppb
2019-07-09450019011.20 ppb
2019-07-0945002201ND
2019-07-09450017011.70 ppb
2019-07-09450013011.70 ppb
2019-07-09450014012.10 ppb
2019-07-09450016012.10 ppb
2019-10-09468234012.00 ppb
2019-10-09468231012.50 ppb
2019-10-09468230013.10 ppb
2019-10-09468226012.40 ppb
2019-10-09468236012.20 ppb
2019-10-09468227012.30 ppb
2019-10-09468229012.70 ppb
2019-10-09468228013.70 ppb