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EWG's Tap Water Database — 2021 UPDATE

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Chlorodibromoacetic acid

Knox County Public Water & Sewer District 1

Chlorodibromoacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.

MORE ABOUT THIS CONTAMINANT

 

48

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND
20180.494 ppb82ND - 2.04 ppb
20190.130 ppb81ND - 1.04 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chlorodibromoacetic 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
2014-02-13AC18141ND
2014-02-13AC18142ND
2014-05-23AC23149ND
2014-05-23AC23150ND
2014-08-22AC33215ND
2014-08-22AC33214ND
2014-11-20AC38195ND
2014-11-20AC38196ND
2015-02-19AC41921ND
2015-02-19AC41922ND
2015-05-22AC46497ND
2015-05-22AC46498ND
2015-08-24AC57346ND
2015-08-24AC57345ND
2015-11-24AC62760ND
2015-11-24AC62759ND
2016-02-26AC66303ND
2016-02-26AC66304ND
2016-06-02AC74715ND
2016-06-02AC74714ND
2016-08-23AC81599ND
2016-08-23AC81598ND
2016-11-21AC86895ND
2016-11-21AC86896ND
2017-02-21AC90760ND
2017-02-21AC90759ND
2017-05-15AC95730ND
2017-05-15AC95731ND
2017-08-16AD03318ND
2017-08-16AD03319ND
2017-11-20AD09444ND
2017-11-20AD09445ND
2018-02-27AD14231ND
2018-02-27AD14230ND
2018-05-17AD20464ND
2018-05-17AD20463ND
2018-08-14AD311381.91 ppb
2018-08-14AD311392.04 ppb
2018-11-15AD35673ND
2018-11-15AD35674ND
2019-02-26AD39342ND
2019-02-26AD39341ND
2019-05-20AD47422ND
2019-05-20AD47423ND
2019-08-21AD53863ND
2019-08-21AD538641.04 ppb
2019-11-19AD58048ND
2019-11-19AD58049ND