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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Marquette

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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.294 ppb179ND - 0.600 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.420 ppb1510ND - 1.000 ppb
20190.344 ppb95ND - 0.700 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
2014-03-24LLF125090.500 ppb
2014-03-24LLF125070.600 ppb
2014-03-24LLF125080.500 ppb
2014-03-24LLF125060.500 ppb
2014-06-30LLF25201ND
2014-06-30LLF25199ND
2014-06-30LLF25198ND
2014-06-30LLF25200ND
2014-09-29LLF410790.600 ppb
2014-09-29LLF410810.600 ppb
2014-09-29LLF410800.600 ppb
2014-09-29LLF410780.600 ppb
2014-09-29LLF41046ND
2014-12-08LLF487680.500 ppb
2014-12-08LLF48771ND
2014-12-08LLF48769ND
2014-12-08LLF48770ND
2018-03-14LLH708470.500 ppb
2018-03-14LLH708480.600 ppb
2018-03-14LLH708460.500 ppb
2018-03-14LLH708450.500 ppb
2018-06-18LLH87088ND
2018-06-18LLH87089ND
2018-06-18LLH87087ND
2018-06-18LLH87086ND
2018-09-30LLI093741.000 ppb
2018-09-30LLI093750.700 ppb
2018-09-30LLI093760.700 ppb
2018-09-30LLI093730.700 ppb
2018-10-09LLI10669ND
2018-12-17LLI197150.600 ppb
2018-12-17LLI197160.500 ppb
2019-03-11LLI28718ND
2019-03-11LLI28719ND
2019-06-10LLI420250.600 ppb
2019-06-10LLI420260.500 ppb
2019-09-17LLI64831ND
2019-09-17LLI648320.700 ppb
2019-09-17LLI648330.700 ppb
2019-12-16LLI839320.600 ppb
2019-12-16LLI83931ND