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Dibromochloromethane

Jefferson County PWSD 3

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.

 

54

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
20121.97 ppb12120.630 ppb - 4.20 ppb
20130.601 ppb169ND - 2.21 ppb
20141.03 ppb1612ND - 2.59 ppb
20151.01 ppb108ND - 2.39 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.1 ppb

The 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.

EPA Maximum Contaminant
Level Goal (MCLG)60.0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2012-05-22AB708152.08 ppb
2012-05-22AB708161.73 ppb
2012-05-22AB708171.58 ppb
2012-05-22AB708182.08 ppb
2012-08-15AB812094.20 ppb
2012-08-15AB812113.03 ppb
2012-08-15AB812102.89 ppb
2012-08-15AB812083.09 ppb
2012-11-26AB863680.630 ppb
2012-11-26AB863670.730 ppb
2012-11-26AB863660.810 ppb
2012-11-26AB863650.730 ppb
2013-02-19AB92093ND
2013-02-19AB92094ND
2013-02-19AB92095ND
2013-02-19AB92096ND
2013-05-20AB966540.720 ppb
2013-05-20AB96653ND
2013-05-20AB966520.620 ppb
2013-05-20AB966550.980 ppb
2013-08-13AC073472.21 ppb
2013-08-13AC07348ND
2013-08-13AC073490.760 ppb
2013-08-13AC07350ND
2013-11-22AC142291.19 ppb
2013-11-22AC142281.03 ppb
2013-11-22AC142271.12 ppb
2013-11-22AC142260.980 ppb
2014-02-25AC182561.04 ppb
2014-02-25AC182571.14 ppb
2014-02-25AC182581.36 ppb
2014-02-26AC182592.21 ppb
2014-06-02AC28380ND
2014-06-02AC283790.990 ppb
2014-06-02AC28378ND
2014-06-02AC283770.780 ppb
2014-09-15AC334881.78 ppb
2014-09-15AC334892.19 ppb
2014-09-15AC334902.59 ppb
2014-09-15AC334911.34 ppb
2014-12-03AC38315ND
2014-12-03AC383140.590 ppb
2014-12-03AC38313ND
2014-12-03AC383120.540 ppb
2015-02-25AC420390.880 ppb
2015-02-25AC420420.820 ppb
2015-02-25AC420400.950 ppb
2015-02-25AC420410.740 ppb
2015-06-01AC465931.28 ppb
2015-06-01AC465941.25 ppb
2015-09-01AC575762.39 ppb
2015-09-01AC575751.78 ppb
2015-12-09AC62859ND
2015-12-09AC62860ND