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Bromoform

City of Flint

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.

 

114

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.140 ppb201ND - 2.80 ppb
20110.0333 ppb211ND - 0.700 ppb
20120.128 ppb181ND - 2.30 ppb
20130.0444 ppb181ND - 0.800 ppb
20141.76 ppb3732ND - 3.30 ppb
2015N/A00N/A

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
2010-03-02LLD18521ND
2010-03-02LLD18520ND
2010-03-02LLD18518ND
2010-03-03LLD18522ND
2010-03-03LLD18519ND
2010-05-11LLD28057ND
2010-05-11LLD28058ND
2010-05-12LLD28059ND
2010-05-12LLD28064ND
2010-08-25LLD47433ND
2010-08-25LLD47434ND
2010-08-25LLD47435ND
2010-08-26LLD47436ND
2010-08-26LLD47437ND
2010-10-20LLD57197ND
2010-10-20LLD57199ND
2010-10-20LLD57198ND
2010-10-21LLD57200ND
2010-10-21LLD57201ND
2010-11-05LLD595412.80 ppb
2011-03-03LLD71992ND
2011-03-03LLD71996ND
2011-03-03LLD71993ND
2011-03-03LLD71995ND
2011-03-03LLD71994ND
2011-06-09LLD84511ND
2011-06-09LLD84512ND
2011-06-09LLD84513ND
2011-06-09LLD84510ND
2011-06-09LLD84514ND
2011-09-08LLD99860ND
2011-09-08LLD99859ND
2011-09-08LLD99863ND
2011-09-08LLD99862ND
2011-09-08LLD99861ND
2011-12-02LLE110880.700 ppb
2011-12-06LLE11085ND
2011-12-06LLE11086ND
2011-12-06LLE11084ND
2011-12-06LLE11087ND
2011-12-06LLE11083ND
2012-03-13LLE20187ND
2012-03-13LLE20190ND
2012-03-13LLE20186ND
2012-03-13LLE20189ND
2012-03-13LLE20188ND
2012-05-03LLE264112.30 ppb
2012-05-23LLE29102ND
2012-05-23LLE29100ND
2012-05-23LLE29101ND
2012-05-23LLE29103ND
2012-08-22LLE44310ND
2012-08-22LLE44308ND
2012-08-22LLE44311ND
2012-08-22LLE44309ND
2012-11-20LLE56068ND
2012-11-20LLE56066ND
2012-11-20LLE56065ND
2012-11-20LLE56067ND
2013-01-18LLE61821ND
2013-02-20LLE64755ND
2013-02-20LLE64756ND
2013-02-20LLE64754ND
2013-02-20LLE64753ND
2013-05-22LLE74994ND
2013-05-22LLE74996ND
2013-05-22LLE74995ND
2013-05-22LLE74997ND
2013-07-18LLE839170.800 ppb
2013-08-21LLE89771ND
2013-08-21LLE89773ND
2013-08-21LLE89774ND
2013-08-21LLE89772ND
2013-11-20LLF02285ND
2013-11-20LLF02284ND
2013-11-20LLF02286ND
2013-11-20LLF02287ND
2014-02-19LLF09946ND
2014-02-19LLF09947ND
2014-02-19LLF09948ND
2014-02-19LLF09945ND
2014-05-21LLF194231.60 ppb
2014-05-21LLF194241.50 ppb
2014-05-21LLF194251.40 ppb
2014-05-21LLF194291.20 ppb
2014-05-21LLF194221.40 ppb
2014-05-21LLF194261.10 ppb
2014-05-21LLF194271.20 ppb
2014-05-21LLF194281.20 ppb
2014-05-22LLF194301.000 ppb
2014-07-15LLF277193.30 ppb
2014-08-06LLF312221.80 ppb
2014-08-21LLF341652.00 ppb
2014-08-21LLF341702.40 ppb
2014-08-21LLF341642.20 ppb
2014-08-21LLF341692.30 ppb
2014-08-21LLF341712.40 ppb
2014-08-21LLF341722.40 ppb
2014-08-21LLF341662.30 ppb
2014-08-21LLF341673.20 ppb
2014-08-21LLF341683.30 ppb
2014-08-21LLF341733.30 ppb
2014-10-28LLF446871.40 ppb
2014-11-19LLF471712.60 ppb
2014-11-19LLF471692.10 ppb
2014-11-19LLF471702.60 ppb
2014-11-19LLF471782.10 ppb
2014-11-19LLF471772.00 ppb
2014-11-20LLF471722.60 ppb
2014-11-20LLF471741.80 ppb
2014-11-20LLF471751.70 ppb
2014-11-20LLF471731.80 ppb
2014-11-20LLF471761.80 ppb
2014-11-20LLF47181ND