Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dibromochloromethane

University of Connecticut - Main Campus

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

 

130

Samples

0

Samples exceeding legal limit (MCL)

117

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.52 ppb1917ND - 5.20 ppb
20152.76 ppb1916ND - 5.90 ppb
20163.03 ppb1816ND - 6.30 ppb
20173.04 ppb2220ND - 5.00 ppb
20183.42 ppb2624ND - 6.90 ppb
20193.37 ppb2624ND - 7.30 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
2014-03-10BG17096TTHM1.50 ppb
2014-03-10BG17099TTHM3.20 ppb
2014-03-10BG17101TTHM1.40 ppb
2014-03-10BG17102TTHM1.80 ppb
2014-04-24BG36616VOC10.970 ppb
2014-04-24BG36617VOC1ND
2014-06-12BG56337TTHM2.70 ppb
2014-06-12BG56340TTHM4.40 ppb
2014-06-12BG56345TTHM2.80 ppb
2014-06-12BG56346TTHM3.20 ppb
2014-06-27BG66061VOC1ND
2014-09-16BH14164TTHM2.90 ppb
2014-09-16BH14167TTHM5.20 ppb
2014-09-16BH14172TTHM2.60 ppb
2014-09-16BH14173TTHM2.80 ppb
2014-12-10BH51407TTHM3.10 ppb
2014-12-10BH51410TTHM3.70 ppb
2014-12-10BH51415TTHM2.70 ppb
2014-12-10BH51416TTHM2.90 ppb
2015-01-22BH66098VOC1ND
2015-01-22BH66096VOC1ND
2015-01-22BH66097VOC1ND
2015-03-09BH80473TTHM3.30 ppb
2015-03-09BH80470TTHM1.80 ppb
2015-03-12BH82671TTHM1.80 ppb
2015-03-12BH82672TTHM2.00 ppb
2015-06-08BJ27397TTHM3.30 ppb
2015-06-08BJ27393TTHM4.60 ppb
2015-06-08BJ27398TTHM2.60 ppb
2015-06-08BJ27390TTHM2.50 ppb
2015-09-22BJ95540TTHM5.90 ppb
2015-09-22BJ95541TTHM3.90 ppb
2015-09-22BJ95542TTHM3.50 ppb
2015-09-22BJ95539TTHM3.60 ppb
2015-12-09BK34678TTHM4.80 ppb
2015-12-09BK34679TTHM2.90 ppb
2015-12-09BK34680TTHM3.20 ppb
2015-12-09BK34675TTHM2.80 ppb
2016-03-09BK75989TTHM2.50 ppb
2016-03-09BK75990TTHM2.60 ppb
2016-03-09BK75991TTHM2.40 ppb
2016-03-09BK75992TTHM3.60 ppb
2016-06-09BN51405TTHM2.00 ppb
2016-06-09BN51408TTHM4.10 ppb
2016-06-09BN51412TTHM2.60 ppb
2016-06-09BN51413TTHM2.30 ppb
2016-06-14BN54228VOC1ND
2016-06-14BN54227VOC1ND
2016-09-21BV20288TTHM3.20 ppb
2016-09-21BV20289TTHM3.40 ppb
2016-09-21BV20290TTHM2.90 ppb
2016-09-21BV20291TTHM6.30 ppb
2016-12-13BX04254TTHM3.80 ppb
2016-12-13BX04255TTHM3.70 ppb
2016-12-13BX04256TTHM3.40 ppb
2016-12-13BX04257TTHM5.70 ppb
2017-03-08BX81804TTHM2.70 ppb
2017-03-08BX81805TTHM2.90 ppb
2017-03-08BX81806TTHM2.60 ppb
2017-03-08BX81807TTHM4.60 ppb
2017-06-13BY38124TTHM2.00 ppb
2017-06-13BY38125TTHM3.30 ppb
2017-06-13BY38126TTHM2.20 ppb
2017-06-13BY38127TTHM4.30 ppb
2017-08-09BY81246TTHM4.80 ppb
2017-08-09BY81247TTHM4.10 ppb
2017-08-09BY81248TTHM4.20 ppb
2017-08-10BY82233TTHM4.10 ppb
2017-09-05BY94975TTHM3.80 ppb
2017-09-05BY94976TTHM4.00 ppb
2017-09-06BY95732TTHM3.20 ppb
2017-09-07BY96696TTHM2.40 ppb
2017-12-11BZ54499VOC1ND
2017-12-11BZ54498VOC1ND
2017-12-12BZ58240TTHM2.50 ppb
2017-12-12BZ58241TTHM1.80 ppb
2017-12-12BZ58242TTHM2.30 ppb
2017-12-12BZ58243TTHM5.00 ppb
2018-03-15CA02987TTHM2.90 ppb
2018-03-15CA02988TTHM2.20 ppb
2018-03-15CA02989TTHM2.80 ppb
2018-03-15CA02990TTHM4.20 ppb
2018-06-12CA68568TTHM3.50 ppb
2018-06-12CA68569TTHM3.20 ppb
2018-06-12CA68570TTHM3.20 ppb
2018-06-12CA68571TTHM3.60 ppb
2018-09-19DBP 2005061823.60 ppb
2018-09-19DBP 2005061844.30 ppb
2018-09-19DBP 2005061866.30 ppb
2018-09-19DBP 2005061892.90 ppb
2018-09-25DBP 2005067203.70 ppb
2018-09-25DBP 2005067214.10 ppb
2018-09-25DBP 2005067226.90 ppb
2018-09-25DBP 2005067233.60 ppb
2018-09-26DBP 2005069664.70 ppb
2018-09-27DBP 2005070733.90 ppb
2018-12-04DBP 2005147241.90 ppb
2018-12-04DBP 2005147252.60 ppb
2018-12-04DBP 2005147265.00 ppb
2018-12-04DBP 2005147282.10 ppb
2018-12-12VOC1 200515892ND
2018-12-12VOC1 200515895ND
2018-12-17DBP 2005162812.70 ppb
2018-12-17DBP 2005162824.90 ppb
2019-03-18DBP 2005250242.40 ppb
2019-03-18DBP 2005250262.30 ppb
2019-03-18DBP 2005250294.80 ppb
2019-03-18DBP 2005250312.60 ppb
2019-03-18DBP 2005250332.60 ppb
2019-03-18DBP 2005250343.40 ppb
2019-06-24DBP 2005375415.50 ppb
2019-06-24DBP 2005375423.20 ppb
2019-06-24DBP 2005375434.30 ppb
2019-06-25DBP 2005378062.40 ppb
2019-06-25DBP 2005378073.40 ppb
2019-06-25DBP 2005378083.70 ppb
2019-09-16DBP 2005490013.10 ppb
2019-09-16DBP 2005490022.80 ppb
2019-09-16DBP 2005490407.30 ppb
2019-09-16DBP 2005490414.10 ppb
2019-09-16DBP 2005490433.40 ppb
2019-09-16DBP 2005490445.50 ppb
2019-11-21VOC1 200557816ND
2019-11-21VOC1 200557817ND
2019-12-09DBP 2005594122.30 ppb
2019-12-09DBP 2005594162.20 ppb
2019-12-09DBP 2005594195.80 ppb
2019-12-09DBP 2005594223.00 ppb
2019-12-09DBP 2005594252.70 ppb
2019-12-09DBP 2005594274.80 ppb