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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

West Delta Water Supply Corporation

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.05 ppb21ND - 8.10 ppb
20154.35 ppb21ND - 8.70 ppb
20164.00 ppb21ND - 8.00 ppb
20173.35 ppb222.10 ppb - 4.60 ppb
20183.35 ppb21ND - 6.70 ppb
20192.55 ppb21ND - 5.10 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
2014-09-24Q1447654002ND
2014-09-24Q14476540038.10 ppb
2015-09-22Q1537147002ND
2015-09-22Q15371470038.70 ppb
2016-06-09Q1623303006ND
2016-06-09Q16233030078.00 ppb
2017-08-22Q17375090022.10 ppb
2017-08-22Q17375090074.60 ppb
2018-06-21Q1824881006ND
2018-06-21Q18248810016.70 ppb
2019-08-26Q1959454006ND
2019-08-26Q19594540075.10 ppb