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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Pecan Grove MUD

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

 

126

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.906 ppb1810ND - 2.70 ppb
20150.645 ppb208ND - 2.30 ppb
20160.322 ppb276ND - 1.70 ppb
2017ND210ND
20180.270 ppb204ND - 1.60 ppb
20190.570 ppb209ND - 1.50 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
2014-02-05AC41507ND
2014-02-05AC41505ND
2014-02-17AC43016ND
2014-02-17AC43095ND
2014-02-17AC43069ND
2014-02-17AC43094ND
2014-04-01AC48907ND
2014-04-01AC489061.30 ppb
2014-04-01AC489021.20 ppb
2014-04-01AC489031.30 ppb
2014-08-15AC640952.00 ppb
2014-08-15AC640932.70 ppb
2014-08-15AC64106ND
2014-08-15AC641521.70 ppb
2014-10-02AC687911.30 ppb
2014-10-02AC687791.50 ppb
2014-10-02AC687761.60 ppb
2014-10-02AC687751.70 ppb
2015-01-14AC762350.600 ppb
2015-01-14AC76239ND
2015-01-14AC76245ND
2015-01-14AC76190ND
2015-01-14AC761861.20 ppb
2015-01-14AC76189ND
2015-01-14AC76191ND
2015-04-07AC875081.80 ppb
2015-04-07AC874481.60 ppb
2015-04-07AC874642.30 ppb
2015-04-07AC874582.20 ppb
2015-04-07AC874491.80 ppb
2015-07-09AC98964ND
2015-07-09AC98963ND
2015-07-09AC98962ND
2015-07-09AC98967ND
2015-10-26AD116901.40 ppb
2015-10-26AD11675ND
2015-10-26AD11681ND
2015-10-26AD11684ND
2016-01-21AD192851.70 ppb
2016-01-21AD192931.10 ppb
2016-01-21AD192991.70 ppb
2016-01-21AD19291ND
2016-01-21AD19240ND
2016-01-21AD192371.60 ppb
2016-01-21AD192361.10 ppb
2016-01-21AD192321.50 ppb
2016-05-06AD35795ND
2016-05-06AD35796ND
2016-05-06AD35798ND
2016-05-06AD35799ND
2016-07-15AD44509ND
2016-07-15AD44510ND
2016-07-15AD44492ND
2016-07-15AD44497ND
2016-09-08AD48492ND
2016-09-08AD48486ND
2016-09-08AD48496ND
2016-09-23AD51202ND
2016-12-07AD60875ND
2016-12-07AD60876ND
2016-12-07AD60877ND
2016-12-07AD60878ND
2016-12-07AD60922ND
2016-12-07AD60936ND
2016-12-07AD60934ND
2017-02-01AD68117ND
2017-02-01AD68076ND
2017-02-01AD68077ND
2017-02-01AD68047ND
2017-02-01AD68078ND
2017-05-02AD82220ND
2017-05-02AD82123ND
2017-05-02AD82111ND
2017-05-02AD82113ND
2017-05-02AD82121ND
2017-07-05AD88313ND
2017-07-05AD88308ND
2017-07-05AD88309ND
2017-07-05AD88310ND
2017-09-11AD95499ND
2017-09-11AD95503ND
2017-09-11AD95495ND
2017-10-17AE01070ND
2017-10-17AE01068ND
2017-10-17AE01069ND
2017-10-17AE01039ND
2018-02-02AE122851.20 ppb
2018-02-02AE12184ND
2018-02-02AE12181ND
2018-02-02AE12177ND
2018-02-02AE12182ND
2018-03-26AE199761.000 ppb
2018-03-26AE19954ND
2018-03-26AE19934ND
2018-04-09AE21638ND
2018-04-09AE21645ND
2018-04-09AE21670ND
2018-04-09AE21666ND
2018-07-05AE32402ND
2018-07-05AE32400ND
2018-07-05AE32412ND
2018-07-05AE32390ND
2018-10-15AE43393ND
2018-10-15AE433871.60 ppb
2018-10-15AE433881.60 ppb
2018-10-15AE43391ND
2019-01-14AE49585ND
2019-01-14AE495201.30 ppb
2019-01-14AE495131.20 ppb
2019-01-14AE495191.20 ppb
2019-01-14AE495211.20 ppb
2019-04-11AE621021.20 ppb
2019-04-11AE62098ND
2019-04-11AE620111.10 ppb
2019-04-11AE620101.50 ppb
2019-04-11AE620091.50 ppb
2019-04-11AE620161.20 ppb
2019-07-15AE74423ND
2019-07-15AE74375ND
2019-07-15AE74377ND
2019-07-15AE74366ND
2019-07-15AE74365ND
2019-10-08AE85966ND
2019-10-08AE85965ND
2019-10-08AE85968ND
2019-11-22AE90356ND