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EWG's Tap Water Database — 2021 UPDATE

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Tribromoacetic acid

Caldwell County Public Water Supply District 1

Tribromoacetic 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
20153.40 ppb21ND - 6.80 ppb
2016ND40ND
2017ND40ND
2018ND20ND
2019N/A00N/A

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 tribromoacetic 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
2014-07-24AC30642ND
2015-07-20AC54286ND
2015-10-19AC612136.80 ppb
2016-01-14AC65020ND
2016-04-13AC69379ND
2016-09-09AC83806ND
2016-10-19AC86287ND
2017-01-23AC89098ND
2017-04-12AC94460ND
2017-07-12AD01397ND
2017-10-15AD07896ND
2018-01-22AD11338ND
2018-04-16AD18011ND