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EWG's Tap Water Database

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Bromoform

Carthage

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND30ND
2011ND10ND
2012ND10ND
2013ND30ND
20140.430 ppb21ND - 0.860 ppb
20150.495 ppb21ND - 0.990 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.5 ppb

The health guideline of 0.5 ppb for bromoform 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.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-01-18AB12284ND
2010-01-18AB12285ND
2010-08-12AB30680ND
2011-10-24AB61334ND
2012-08-13AB81151ND
2013-01-15AB90039ND
2013-01-15AB90038ND
2013-08-19AC07126ND
2014-08-29AC33348ND
2014-08-29AC333490.860 ppb
2015-08-20AC574410.990 ppb
2015-08-20AC57440ND