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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Fitzgerald

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

 

106

Samples

0

Samples exceeding legal limit (MCL)

57

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.625 ppb208ND - 1.80 ppb
20151.29 ppb1711ND - 3.30 ppb
20161.07 ppb168ND - 3.00 ppb
20170.855 ppb209ND - 3.00 ppb
20181.12 ppb179ND - 3.60 ppb
20191.49 ppb1612ND - 3.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-02-17AI28005ND
2014-02-17AI280061.60 ppb
2014-02-17AI280071.40 ppb
2014-02-17AI28008ND
2014-05-12AI40346ND
2014-05-12AI403471.20 ppb
2014-05-12AI403481.50 ppb
2014-05-12AI40349ND
2014-05-28AI41564ND
2014-05-28AI41565ND
2014-05-28AI41566ND
2014-05-28AI41567ND
2014-08-18AI50325ND
2014-08-18AI503261.70 ppb
2014-08-18AI503271.70 ppb
2014-08-18AI50328ND
2014-11-20AI59964ND
2014-11-20AI599651.60 ppb
2014-11-20AI599661.80 ppb
2014-11-20AI59967ND
2015-02-18AI65154ND
2015-02-18AI651551.40 ppb
2015-02-18AI651561.40 ppb
2015-02-18AI65157ND
2015-05-18AI77383ND
2015-05-18AI773842.00 ppb
2015-05-18AI773852.40 ppb
2015-05-18AI773861.40 ppb
2015-06-09AI79300ND
2015-08-19AI87043ND
2015-08-19AI870442.90 ppb
2015-08-19AI870453.30 ppb
2015-08-19AI870461.20 ppb
2015-11-17AJ01330ND
2015-11-17AJ013312.10 ppb
2015-11-17AJ013321.70 ppb
2015-11-17AJ013332.10 ppb
2016-02-17AJ06663ND
2016-02-17AJ066642.20 ppb
2016-02-17AJ066651.60 ppb
2016-02-17AJ06666ND
2016-05-17AJ12373ND
2016-05-17AJ123742.10 ppb
2016-05-17AJ123751.50 ppb
2016-05-17AJ12376ND
2016-08-16AJ22886ND
2016-08-16AJ228873.00 ppb
2016-08-16AJ228882.40 ppb
2016-08-16AJ228892.90 ppb
2016-11-15AJ33564ND
2016-11-15AJ335651.40 ppb
2016-11-15AJ33566ND
2016-11-15AJ33567ND
2017-02-22AJ469621.70 ppb
2017-02-22AJ469631.30 ppb
2017-02-22AJ469641.10 ppb
2017-02-22AJ469651.90 ppb
2017-02-23AJ47039ND
2017-02-23AJ47040ND
2017-02-23AJ47041ND
2017-02-23AJ470421.50 ppb
2017-05-17AJ55665ND
2017-05-17AJ556661.60 ppb
2017-05-17AJ55667ND
2017-05-17AJ55668ND
2017-08-22AJ65303ND
2017-08-22AJ653043.00 ppb
2017-08-22AJ65305ND
2017-08-22AJ653062.50 ppb
2017-11-20AJ74096ND
2017-11-20AJ740972.50 ppb
2017-11-20AJ74098ND
2017-11-20AJ74099ND
2018-02-20AJ84225ND
2018-02-20AJ842261.60 ppb
2018-02-20AJ84227ND
2018-02-20AJ842281.20 ppb
2018-05-22AJ89950ND
2018-05-22AJ899512.20 ppb
2018-05-22AJ89952ND
2018-05-22AJ899533.60 ppb
2018-06-18AJ91829ND
2018-08-21AJ98458ND
2018-08-21AJ984592.60 ppb
2018-08-21AJ984601.40 ppb
2018-08-21AJ984613.30 ppb
2018-11-12AK05757ND
2018-11-12AK057581.70 ppb
2018-11-12AK057591.40 ppb
2018-11-12AK05760ND
2019-02-19AK11651ND
2019-02-19AK116522.10 ppb
2019-02-19AK116531.20 ppb
2019-02-19AK116542.90 ppb
2019-05-16AK17729ND
2019-05-16AK177302.20 ppb
2019-05-16AK177311.000 ppb
2019-05-16AK177322.40 ppb
2019-08-20AK27452ND
2019-08-20AK274532.80 ppb
2019-08-20AK274541.20 ppb
2019-08-20AK274553.00 ppb
2019-11-19AK37095ND
2019-11-19AK370962.00 ppb
2019-11-19AK370971.000 ppb
2019-11-19AK370982.10 ppb