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EWG's Tap Water Database — 2021 UPDATE

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Chlorodibromoacetic acid

Caldwell County Public Water Supply 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.46 ppb114.46 ppb
201510.7 ppb21ND - 21.4 ppb
20162.61 ppb43ND - 4.18 ppb
20171.26 ppb42ND - 3.77 ppb
20182.37 ppb21ND - 4.73 ppb
2019N/A00N/A

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
2014-07-24AC306424.46 ppb
2015-07-20AC54286ND
2015-10-19AC6121321.4 ppb
2016-01-14AC650204.18 ppb
2016-04-13AC693793.91 ppb
2016-09-09AC838062.35 ppb
2016-10-19AC86287ND
2017-01-23AC890981.25 ppb
2017-04-12AC944603.77 ppb
2017-07-12AD01397ND
2017-10-15AD07896ND
2018-01-22AD11338ND
2018-04-16AD180114.73 ppb