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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Brenham

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

 

105

Samples

0

Samples exceeding legal limit (MCL)

89

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201411.0 ppb17178.20 ppb - 13.6 ppb
20152.89 ppb1715ND - 9.90 ppb
20161.71 ppb2017ND - 3.40 ppb
20172.23 ppb1714ND - 3.80 ppb
20183.18 ppb1715ND - 6.60 ppb
20191.45 ppb1711ND - 6.90 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
2014-02-18AC433228.90 ppb
2014-02-18AC433318.20 ppb
2014-02-18AC433258.70 ppb
2014-02-18AC4331111.1 ppb
2014-05-02AC5302811.0 ppb
2014-05-02AC5295812.3 ppb
2014-05-02AC5296712.9 ppb
2014-05-02AC5296913.6 ppb
2014-09-23AC679219.30 ppb
2014-09-23AC6785910.3 ppb
2014-09-23AC6786711.5 ppb
2014-09-23AC6786911.1 ppb
2014-09-23AC678889.80 ppb
2014-12-04AC7364910.5 ppb
2014-12-04AC7366011.5 ppb
2014-12-04AC7365013.2 ppb
2014-12-04AC7365512.9 ppb
2015-02-25AC818406.30 ppb
2015-02-25AC818419.90 ppb
2015-02-25AC818448.50 ppb
2015-02-25AC818437.70 ppb
2015-06-08AC94858ND
2015-06-08AC94857ND
2015-06-08AC948861.20 ppb
2015-06-08AC948871.10 ppb
2015-09-11AD069121.40 ppb
2015-09-11AD068181.50 ppb
2015-09-11AD068141.70 ppb
2015-09-11AD068731.10 ppb
2015-09-11AD068131.30 ppb
2015-12-11AD167441.70 ppb
2015-12-11AD167421.70 ppb
2015-12-11AD167432.00 ppb
2015-12-11AD167572.10 ppb
2016-02-23AD249991.50 ppb
2016-02-23AD250121.50 ppb
2016-02-23AD250091.60 ppb
2016-02-23AD249912.00 ppb
2016-02-23AD250941.60 ppb
2016-05-16AD367833.40 ppb
2016-05-16AD367453.40 ppb
2016-05-16AD367462.50 ppb
2016-05-16AD367862.90 ppb
2016-05-16AD368233.40 ppb
2016-09-12AD488111.60 ppb
2016-09-12AD488291.30 ppb
2016-09-12AD488131.30 ppb
2016-09-12AD488121.10 ppb
2016-09-12AD488661.60 ppb
2016-10-24AD54322ND
2016-10-24AD54326ND
2016-10-24AD543112.40 ppb
2016-10-24AD543251.10 ppb
2016-10-24AD54400ND
2017-01-25AD668483.80 ppb
2017-01-25AD667543.40 ppb
2017-01-25AD667532.80 ppb
2017-01-25AD667523.50 ppb
2017-01-25AD667513.70 ppb
2017-04-25AD808963.40 ppb
2017-04-25AD809041.90 ppb
2017-04-25AD809082.70 ppb
2017-04-25AD809022.70 ppb
2017-07-27AD910922.00 ppb
2017-07-27AD910892.20 ppb
2017-07-27AD910912.40 ppb
2017-07-27AD910932.20 ppb
2017-10-06AD99794ND
2017-10-06AD99791ND
2017-10-06AD99785ND
2017-10-06AD997981.20 ppb
2018-01-30AE113014.80 ppb
2018-01-30AE112035.80 ppb
2018-01-30AE112055.80 ppb
2018-01-30AE112222.50 ppb
2018-01-30AE112085.20 ppb
2018-04-11AE220125.70 ppb
2018-04-11AE220104.40 ppb
2018-04-11AE220084.70 ppb
2018-04-11AE220136.60 ppb
2018-07-24AE34321ND
2018-07-24AE343181.60 ppb
2018-07-24AE343162.30 ppb
2018-07-24AE343191.10 ppb
2018-12-04AE477831.20 ppb
2018-12-04AE47784ND
2018-12-04AE477861.30 ppb
2018-12-04AE477871.000 ppb
2019-01-28AE51642ND
2019-01-28AE516101.20 ppb
2019-01-28AE51609ND
2019-01-28AE516081.10 ppb
2019-01-28AE516071.20 ppb
2019-05-06AE648632.20 ppb
2019-05-06AE648602.30 ppb
2019-05-06AE648706.90 ppb
2019-05-06AE648505.30 ppb
2019-07-29AE76160ND
2019-07-29AE76173ND
2019-07-29AE76162ND
2019-07-29AE76176ND
2019-10-25AE876971.10 ppb
2019-10-25AE876961.10 ppb
2019-10-25AE876951.10 ppb
2019-10-25AE876821.10 ppb