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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Southwest Alabama Water Authority

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

27

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
20160.788 ppb52ND - 3.14 ppb
2017N/A00N/A
2018ND90ND
20191.10 ppb136ND - 7.52 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2016-01-12AB09762ND
2016-01-13AB097600.799 ppb
2016-01-13AB09761ND
2016-01-13AB097593.14 ppb
2016-12-1916L0361-1VND
2018-01-10AB25037ND
2018-01-10AB25036ND
2018-04-09AB26319ND
2018-04-09AB26320ND
2018-08-07AB29108ND
2018-08-07AB29109ND
2018-08-07AB29110ND
2018-08-07AB29111ND
2018-10-11AB30932ND
2019-01-14AB325800.700 ppb
2019-01-14AB32581ND
2019-05-13AB350637.52 ppb
2019-05-13AB350611.72 ppb
2019-05-13AB350671.65 ppb
2019-05-13AB350681.60 ppb
2019-05-13AB35069ND
2019-05-13AB35065ND
2019-08-12AB37568ND
2019-08-12AB37567ND
2019-08-12AB37569ND
2019-12-11AB405931.07 ppb
2019-12-11AB40592ND