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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Summerville

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

 

108

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.150 ppb182ND - 1.40 ppb
20150.234 ppb183ND - 1.90 ppb
20160.139 ppb182ND - 1.30 ppb
20170.166 ppb182ND - 2.30 ppb
20180.235 ppb184ND - 1.20 ppb
20190.405 ppb186ND - 1.70 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2014-02-18AI28203ND
2014-02-18AI28204ND
2014-02-18AI28205ND
2014-02-18AI28206ND
2014-03-04AI29121ND
2014-03-04AI29122ND
2014-05-12AI40340ND
2014-05-12AI40341ND
2014-05-12AI40342ND
2014-05-12AI40343ND
2014-08-12AI49435ND
2014-08-12AI49436ND
2014-08-12AI494371.30 ppb
2014-08-12AI494381.40 ppb
2014-11-12AI59469ND
2014-11-12AI59470ND
2014-11-12AI59471ND
2014-11-12AI59472ND
2015-02-12AI649010.520 ppb
2015-02-12AI64902ND
2015-02-12AI64903ND
2015-02-12AI64904ND
2015-02-12AI64905ND
2015-02-12AI64906ND
2015-05-12AI76962ND
2015-05-12AI76963ND
2015-05-12AI76964ND
2015-05-12AI76965ND
2015-08-11AI859821.80 ppb
2015-08-11AI859831.90 ppb
2015-08-11AI85984ND
2015-08-11AI85985ND
2015-11-12AJ00975ND
2015-11-12AJ00976ND
2015-11-12AJ00977ND
2015-11-12AJ00978ND
2016-02-11AJ06362ND
2016-02-11AJ06363ND
2016-02-11AJ06364ND
2016-02-11AJ06365ND
2016-02-12AJ06390ND
2016-02-12AJ06391ND
2016-05-09AJ11778ND
2016-05-09AJ11779ND
2016-05-09AJ11780ND
2016-05-09AJ11781ND
2016-08-09AJ218021.30 ppb
2016-08-09AJ218031.20 ppb
2016-08-09AJ21804ND
2016-08-09AJ21805ND
2016-11-08AJ32987ND
2016-11-08AJ32988ND
2016-11-08AJ32989ND
2016-11-08AJ32990ND
2017-02-06AJ45800ND
2017-02-06AJ45801ND
2017-02-06AJ45802ND
2017-02-06AJ45803ND
2017-04-04AJ52585ND
2017-04-04AJ525860.680 ppb
2017-05-09AJ55062ND
2017-05-09AJ55063ND
2017-05-09AJ55064ND
2017-05-09AJ55065ND
2017-08-09AJ63558ND
2017-08-09AJ63559ND
2017-08-09AJ63560ND
2017-08-09AJ635612.30 ppb
2017-11-08AJ73455ND
2017-11-08AJ73456ND
2017-11-08AJ73457ND
2017-11-08AJ73458ND
2018-01-29AJ780170.730 ppb
2018-01-29AJ78018ND
2018-02-13AJ83802ND
2018-02-13AJ83803ND
2018-02-13AJ83804ND
2018-02-13AJ83805ND
2018-05-15AJ89510ND
2018-05-15AJ89511ND
2018-05-15AJ89512ND
2018-05-15AJ89513ND
2018-08-08AJ971771.10 ppb
2018-08-08AJ97178ND
2018-08-08AJ971791.20 ppb
2018-08-08AJ971801.20 ppb
2018-11-14AK06231ND
2018-11-14AK06232ND
2018-11-14AK06233ND
2018-11-14AK06234ND
2019-02-12AK11264ND
2019-02-13AK11261ND
2019-02-13AK11262ND
2019-02-13AK11263ND
2019-03-27AK140940.620 ppb
2019-03-27AK140950.670 ppb
2019-05-07AK166701.10 ppb
2019-05-07AK16671ND
2019-05-07AK16672ND
2019-05-07AK16673ND
2019-08-13AK259961.70 ppb
2019-08-13AK259971.50 ppb
2019-08-13AK259981.70 ppb
2019-08-13AK25999ND
2019-11-14AK36864ND
2019-11-14AK36865ND
2019-11-14AK36866ND
2019-11-14AK36867ND