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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Bainbridge

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

 

104

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0650 ppb201ND - 1.30 ppb
20150.381 ppb162ND - 4.50 ppb
20160.294 ppb162ND - 2.50 ppb
20170.485 ppb205ND - 2.40 ppb
20180.819 ppb164ND - 4.90 ppb
20190.794 ppb165ND - 5.20 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
2014-01-13AI26393ND
2014-01-13AI26394ND
2014-01-13AI26395ND
2014-01-13AI26396ND
2014-04-21AI38381ND
2014-04-21AI38382ND
2014-04-21AI38383ND
2014-04-21AI38384ND
2014-07-16AI46034ND
2014-07-16AI46035ND
2014-07-16AI46036ND
2014-07-16AI460371.30 ppb
2014-10-01AI56333ND
2014-10-01AI56334ND
2014-10-01AI56335ND
2014-10-01AI56336ND
2014-10-29AI58647ND
2014-10-29AI58648ND
2014-10-29AI58649ND
2014-10-29AI58650ND
2015-01-29AI63735ND
2015-01-29AI63736ND
2015-01-29AI63737ND
2015-01-29AI63738ND
2015-04-06AI74151ND
2015-04-06AI74152ND
2015-04-06AI74153ND
2015-04-06AI74154ND
2015-07-27AI84191ND
2015-07-27AI84192ND
2015-07-27AI841931.60 ppb
2015-07-27AI841944.50 ppb
2015-10-28AI99948ND
2015-10-28AI99949ND
2015-10-28AI99950ND
2015-10-28AI99951ND
2016-01-26AJ05010ND
2016-01-26AJ05011ND
2016-01-26AJ05012ND
2016-01-26AJ050132.50 ppb
2016-04-27AJ10990ND
2016-04-27AJ10991ND
2016-04-27AJ10992ND
2016-04-27AJ10993ND
2016-07-25AJ19382ND
2016-07-25AJ19383ND
2016-07-25AJ193842.20 ppb
2016-07-25AJ19385ND
2016-10-26AJ32227ND
2016-10-26AJ32228ND
2016-10-26AJ32229ND
2016-10-26AJ32230ND
2017-01-25AJ43536ND
2017-01-25AJ43537ND
2017-01-25AJ43538ND
2017-01-25AJ435392.40 ppb
2017-04-25AJ53926ND
2017-04-25AJ53927ND
2017-04-25AJ53928ND
2017-04-25AJ539292.10 ppb
2017-07-24AJ61508ND
2017-07-24AJ61509ND
2017-07-24AJ615101.40 ppb
2017-07-24AJ615111.60 ppb
2017-09-25AJ69327ND
2017-09-25AJ69328ND
2017-09-25AJ69329ND
2017-09-25AJ69330ND
2017-10-24AJ72277ND
2017-10-24AJ72278ND
2017-10-24AJ72279ND
2017-10-24AJ722802.20 ppb
2018-01-24AJ77878ND
2018-01-24AJ77879ND
2018-01-24AJ77880ND
2018-01-24AJ778814.90 ppb
2018-04-25AJ88122ND
2018-04-25AJ88123ND
2018-04-25AJ88124ND
2018-04-25AJ881252.40 ppb
2018-07-23AJ95066ND
2018-07-23AJ95067ND
2018-07-23AJ95068ND
2018-07-23AJ950693.60 ppb
2018-10-24AK04778ND
2018-10-24AK04779ND
2018-10-24AK04780ND
2018-10-24AK047812.20 ppb
2019-01-22AK09835ND
2019-01-22AK09836ND
2019-01-22AK09837ND
2019-01-22AK098385.20 ppb
2019-04-24AK157412.70 ppb
2019-04-24AK15742ND
2019-04-24AK15743ND
2019-04-24AK15744ND
2019-07-23AK23173ND
2019-07-23AK23174ND
2019-07-23AK231751.40 ppb
2019-08-07AK25288ND
2019-10-23AK35595ND
2019-10-23AK35596ND
2019-10-23AK355971.10 ppb
2019-10-23AK355982.30 ppb