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EWG's Tap Water Database — 2021 UPDATE

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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.

MORE ABOUT THIS CONTAMINANT

 

97

Samples

0

Samples exceeding legal limit (MCL)

32

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.76 ppb3732ND - 3.30 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND320ND
2019ND280ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG 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

All test results

Date Lab ID Result
2014-02-19LLF09947ND
2014-02-19LLF09946ND
2014-02-19LLF09945ND
2014-02-19LLF09948ND
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
2014-08-21LLF341642.20 ppb
2014-08-21LLF341733.30 ppb
2014-08-21LLF341683.30 ppb
2014-08-21LLF341673.20 ppb
2014-08-21LLF341662.30 ppb
2014-08-21LLF341722.40 ppb
2014-08-21LLF341712.40 ppb
2014-08-21LLF341692.30 ppb
2014-08-21LLF341702.40 ppb
2014-08-21LLF341652.00 ppb
2014-10-28LLF446871.40 ppb
2014-11-19LLF471712.60 ppb
2014-11-19LLF471772.00 ppb
2014-11-19LLF471782.10 ppb
2014-11-19LLF471702.60 ppb
2014-11-19LLF471692.10 ppb
2014-11-20LLF471741.80 ppb
2014-11-20LLF471731.80 ppb
2014-11-20LLF471761.80 ppb
2014-11-20LLF47181ND
2014-11-20LLF471722.60 ppb
2014-11-20LLF471751.70 ppb
2018-02-06LLH64865ND
2018-02-06LLH64869ND
2018-02-06LLH64867ND
2018-02-06LLH64866ND
2018-02-06LLH64864ND
2018-02-06LLH64868ND
2018-02-06LLH64863ND
2018-02-13LLH65881ND
2018-05-14LLH80922ND
2018-05-14LLH80918ND
2018-05-14LLH80917ND
2018-05-14LLH80921ND
2018-05-14LLH80923ND
2018-05-14LLH80919ND
2018-05-14LLH80920ND
2018-05-14LLH80924ND
2018-08-06LLH97981ND
2018-08-06LLH97983ND
2018-08-07LLH97980ND
2018-08-07LLH97985ND
2018-08-08LLH97984ND
2018-08-08LLH97978ND
2018-08-08LLH97979ND
2018-08-08LLH97982ND
2018-11-05LLI14784ND
2018-11-05LLI14783ND
2018-11-05LLI14788ND
2018-11-05LLI14790ND
2018-11-06LLI14787ND
2018-11-06LLI14786ND
2018-11-06LLI14789ND
2018-11-06LLI14785ND
2019-02-11LLI25488ND
2019-02-11LLI25487ND
2019-02-12LLI25491ND
2019-02-12LLI25490ND
2019-02-13LLI25489ND
2019-02-13LLI25493ND
2019-02-13LLI25486ND
2019-02-13LLI25492ND
2019-05-06LLI37101ND
2019-05-06LLI37100ND
2019-05-07LLI37105ND
2019-05-08LLI37107ND
2019-05-08LLI37103ND
2019-05-08LLI37104ND
2019-05-08LLI37106ND
2019-05-08LLI37102ND
2019-08-06LLI55080ND
2019-08-06LLI55079ND
2019-08-06LLI55075ND
2019-08-06LLI55076ND
2019-08-06LLI55081ND
2019-08-06LLI55078ND
2019-08-06LLI55082ND
2019-08-06LLI55077ND
2019-11-05LLI75657ND
2019-11-05LLI75658ND
2019-11-05LLI75656ND
2019-11-05LLI75659ND