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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Jbsa - Randolph

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

 

109

Samples

0

Samples exceeding legal limit (MCL)

86

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.12 ppb1716ND - 4.70 ppb
20152.63 ppb1814ND - 5.30 ppb
20162.44 ppb1814ND - 5.60 ppb
20172.67 ppb1914ND - 5.50 ppb
20182.18 ppb1913ND - 4.80 ppb
20192.48 ppb1815ND - 5.20 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
2014-03-07AC461812.10 ppb
2014-03-07AC461842.60 ppb
2014-03-07AC461891.80 ppb
2014-03-07AC46204ND
2014-04-16AC508022.10 ppb
2014-04-16AC508012.40 ppb
2014-04-16AC508002.20 ppb
2014-04-16AC508181.000 ppb
2014-07-18AC602690.600 ppb
2014-07-18AC603382.20 ppb
2014-07-18AC603372.80 ppb
2014-07-18AC603402.50 ppb
2014-07-18AC603901.50 ppb
2014-11-21AC727884.60 ppb
2014-11-21AC727651.80 ppb
2014-11-21AC727644.70 ppb
2014-11-21AC727041.20 ppb
2015-03-20AC85617ND
2015-03-20AC854593.10 ppb
2015-03-20AC854601.90 ppb
2015-03-20AC854581.70 ppb
2015-03-20AC85465ND
2015-06-16AC96206ND
2015-06-16AC961592.40 ppb
2015-06-16AC961732.50 ppb
2015-06-16AC961813.70 ppb
2015-06-16AC96167ND
2015-07-28AD012255.20 ppb
2015-07-28AD012234.20 ppb
2015-07-28AD012215.10 ppb
2015-07-28AD012221.30 ppb
2015-10-13AD104342.80 ppb
2015-10-13AD104464.30 ppb
2015-10-13AD104405.30 ppb
2015-10-13AD104373.90 ppb
2016-02-25AD257261.60 ppb
2016-02-25AD257251.40 ppb
2016-02-25AD256972.10 ppb
2016-02-25AD25696ND
2016-03-18AD29619ND
2016-03-18AD29603ND
2016-06-16AD409174.20 ppb
2016-06-16AD409263.40 ppb
2016-06-16AD409244.20 ppb
2016-06-16AD409231.30 ppb
2016-09-16AD500355.60 ppb
2016-09-16AD500344.40 ppb
2016-09-16AD500425.30 ppb
2016-09-16AD50014ND
2016-11-28AD591722.10 ppb
2016-11-28AD591773.10 ppb
2016-11-28AD591754.00 ppb
2016-11-28AD591761.20 ppb
2017-02-02AD68453ND
2017-02-02AD683642.10 ppb
2017-02-02AD683592.60 ppb
2017-02-02AD683603.80 ppb
2017-02-02AD68361ND
2017-05-04AD826892.20 ppb
2017-05-04AD826934.00 ppb
2017-05-04AD827434.10 ppb
2017-05-04AD82685ND
2017-05-04AD82803ND
2017-05-04AD82767ND
2017-08-07AD922314.70 ppb
2017-08-07AD922404.90 ppb
2017-08-07AD922235.40 ppb
2017-08-07AD922412.60 ppb
2017-11-13AE044965.50 ppb
2017-11-13AE044973.80 ppb
2017-11-13AE044943.90 ppb
2017-11-13AE044951.20 ppb
2018-02-01AE11949ND
2018-02-01AE118023.80 ppb
2018-02-01AE118032.60 ppb
2018-02-01AE118042.40 ppb
2018-02-01AE11805ND
2018-04-12AE22322ND
2018-04-12AE22320ND
2018-04-12AE222614.20 ppb
2018-04-12AE222643.00 ppb
2018-04-12AE222634.00 ppb
2018-04-12AE22262ND
2018-08-03AE357902.70 ppb
2018-08-03AE357874.80 ppb
2018-08-03AE358214.60 ppb
2018-08-03AE357831.40 ppb
2018-10-19AE440853.20 ppb
2018-10-19AE440832.20 ppb
2018-10-19AE440842.50 ppb
2018-10-19AE44082ND
2019-01-14AE49591ND
2019-01-14AE495271.90 ppb
2019-01-14AE495323.20 ppb
2019-01-14AE495302.20 ppb
2019-01-14AE49534ND
2019-04-08AE61444ND
2019-04-08AE613514.00 ppb
2019-04-08AE613472.80 ppb
2019-04-08AE613422.90 ppb
2019-04-08AE613481.000 ppb
2019-08-16AE792535.20 ppb
2019-08-16AE792543.70 ppb
2019-08-16AE792513.60 ppb
2019-08-16AE792522.90 ppb
2019-11-15AE895212.30 ppb
2019-11-15AE895032.10 ppb
2019-11-15AE895222.30 ppb
2019-11-15AE895024.50 ppb