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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Bay City

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

 

130

Samples

0

Samples exceeding legal limit (MCL)

99

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.51 ppb1714ND - 4.30 ppb
20151.87 ppb2115ND - 10.2 ppb
20161.09 ppb2515ND - 4.10 ppb
20172.02 ppb2114ND - 10.8 ppb
20182.80 ppb2119ND - 18.0 ppb
20191.92 ppb2522ND - 8.80 ppb

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
2014-02-19AC435904.30 ppb
2014-02-19AC435722.10 ppb
2014-02-19AC435752.30 ppb
2014-02-19AC43573ND
2014-02-19AC435742.20 ppb
2014-04-24AC516961.30 ppb
2014-04-24AC517091.10 ppb
2014-04-24AC516941.20 ppb
2014-04-24AC516951.10 ppb
2014-08-20AC647232.30 ppb
2014-08-20AC647201.10 ppb
2014-08-20AC647222.40 ppb
2014-08-20AC647191.80 ppb
2014-10-24AC705631.40 ppb
2014-10-24AC70562ND
2014-10-24AC706001.000 ppb
2014-10-24AC70559ND
2015-01-29AC78511ND
2015-01-29AC785211.20 ppb
2015-01-29AC785191.20 ppb
2015-01-29AC78515ND
2015-01-29AC78531ND
2015-01-29AC784701.90 ppb
2015-01-29AC784461.30 ppb
2015-01-29AC784451.40 ppb
2015-01-29AC784481.10 ppb
2015-05-18AC923025.80 ppb
2015-05-18AC922801.60 ppb
2015-05-18AC922991.40 ppb
2015-05-18AC92301ND
2015-08-14AD042915.40 ppb
2015-08-14AD042561.10 ppb
2015-08-14AD04245ND
2015-08-14AD04316ND
2015-12-02AD1512410.2 ppb
2015-12-02AD151271.30 ppb
2015-12-02AD151372.20 ppb
2015-12-02AD151332.20 ppb
2016-02-25AD25767ND
2016-02-25AD257591.40 ppb
2016-02-25AD257531.20 ppb
2016-02-25AD257634.10 ppb
2016-02-25AD257002.10 ppb
2016-02-25AD25702ND
2016-02-25AD257011.10 ppb
2016-02-25AD25703ND
2016-03-21AD29571ND
2016-06-02AD392013.20 ppb
2016-06-02AD391252.60 ppb
2016-06-02AD391281.20 ppb
2016-06-02AD391262.20 ppb
2016-06-02AD391271.10 ppb
2016-07-21AD45233ND
2016-09-19AD50004ND
2016-09-19AD499841.20 ppb
2016-09-19AD50008ND
2016-09-19AD499871.000 ppb
2016-09-19AD50155ND
2016-11-16AD582541.000 ppb
2016-11-16AD58257ND
2016-11-16AD582581.60 ppb
2016-11-16AD582552.20 ppb
2016-11-16AD58355ND
2017-01-25AD668521.60 ppb
2017-01-25AD66846ND
2017-01-25AD667811.50 ppb
2017-01-25AD66766ND
2017-01-25AD667671.10 ppb
2017-01-25AD667791.20 ppb
2017-03-06AD734791.60 ppb
2017-03-06AD734611.80 ppb
2017-03-06AD734811.50 ppb
2017-05-23AD852151.40 ppb
2017-05-23AD85212ND
2017-05-23AD852114.60 ppb
2017-05-23AD85214ND
2017-08-08AD923791.70 ppb
2017-08-08AD92375ND
2017-08-08AD923777.90 ppb
2017-08-08AD92378ND
2017-10-23AE01581ND
2017-10-23AE015834.40 ppb
2017-10-23AE0158410.8 ppb
2017-10-23AE015821.30 ppb
2018-01-09AE08373ND
2018-01-09AE084071.30 ppb
2018-01-09AE08375ND
2018-01-09AE083791.10 ppb
2018-01-09AE083594.80 ppb
2018-01-09AE083261.60 ppb
2018-01-09AE083091.30 ppb
2018-01-09AE083182.70 ppb
2018-01-09AE083281.000 ppb
2018-04-05AE214272.30 ppb
2018-04-05AE214251.10 ppb
2018-04-05AE214204.60 ppb
2018-04-05AE214212.40 ppb
2018-07-18AE337274.30 ppb
2018-07-18AE337551.50 ppb
2018-07-18AE337265.10 ppb
2018-07-18AE337481.30 ppb
2018-10-09AE429192.10 ppb
2018-10-09AE429201.000 ppb
2018-10-09AE4292118.0 ppb
2018-10-09AE429221.30 ppb
2019-02-07AE534961.30 ppb
2019-02-07AE534881.90 ppb
2019-02-07AE534981.80 ppb
2019-02-07AE534921.10 ppb
2019-02-07AE53490ND
2019-02-07AE534111.50 ppb
2019-02-07AE534101.30 ppb
2019-02-07AE534131.40 ppb
2019-02-07AE534091.30 ppb
2019-04-29AE63918ND
2019-04-29AE639132.00 ppb
2019-04-29AE639353.50 ppb
2019-04-29AE639341.70 ppb
2019-04-29AE63951ND
2019-04-29AE639531.30 ppb
2019-08-06AE771853.00 ppb
2019-08-06AE772131.20 ppb
2019-08-06AE771868.80 ppb
2019-08-06AE772151.10 ppb
2019-08-06AE772791.60 ppb
2019-08-06AE772731.50 ppb
2019-10-17AE869011.50 ppb
2019-10-17AE869171.000 ppb
2019-10-17AE868947.10 ppb
2019-10-17AE869001.10 ppb