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EWG's Tap Water Database — 2019 UPDATE

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Dibromochloromethane

Rockford

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.

 

62

Samples

0

Samples exceeding legal limit (MCL)

44

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.949 ppb1812ND - 3.50 ppb
20130.355 ppb125ND - 1.40 ppb
20140.728 ppb87ND - 1.82 ppb
20150.935 ppb87ND - 2.30 ppb
20160.801 ppb86ND - 1.60 ppb
20170.862 ppb87ND - 1.83 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
2012-04-042040674-010.830 ppb
2012-04-042040673-020.720 ppb
2012-04-042040673-030.990 ppb
2012-04-042040674-021.70 ppb
2012-04-042040674-031.80 ppb
2012-04-042040673-010.550 ppb
2012-07-022071380-02ND
2012-07-022071380-051.60 ppb
2012-07-022071380-031.000 ppb
2012-07-022071380-01ND
2012-07-022071380-06ND
2012-07-022071380-043.50 ppb
2012-10-022100632-01ND
2012-10-022100632-06ND
2012-10-022100632-031.000 ppb
2012-10-022100632-042.00 ppb
2012-10-022100632-02ND
2012-10-022100632-051.40 ppb
2013-01-023010093-06ND
2013-01-023010093-050.640 ppb
2013-01-023010093-021.40 ppb
2013-01-023010093-01ND
2013-01-023010093-04ND
2013-01-023010093-030.880 ppb
2013-04-023040535-01ND
2013-04-023040535-02ND
2013-06-263063690-02ND
2013-06-263063690-01ND
2013-10-013100405-010.611 ppb
2013-10-013100405-020.729 ppb
2014-01-024010514-011.82 ppb
2014-01-024010514-020.506 ppb
2014-04-014040413-020.729 ppb
2014-04-014040413-010.911 ppb
2014-07-024070527-010.543 ppb
2014-07-024070527-020.559 ppb
2014-10-014100242-010.756 ppb
2014-10-014100242-02ND
2015-01-075010737-011.21 ppb
2015-01-075010737-02ND
2015-04-015040181-010.609 ppb
2015-04-015040181-020.582 ppb
2015-07-015070280-021.74 ppb
2015-07-015070280-012.30 ppb
2015-10-075101065-010.508 ppb
2015-10-075101065-020.534 ppb
2016-01-066010729-020.521 ppb
2016-01-066010729-011.57 ppb
2016-04-066040926-02ND
2016-04-066040926-011.15 ppb
2016-07-066070717-020.853 ppb
2016-07-066070717-011.60 ppb
2016-10-056100805-020.710 ppb
2016-10-056100805-01ND
2017-01-117011616-020.828 ppb
2017-01-117011616-011.49 ppb
2017-04-057040786-010.503 ppb
2017-04-057040786-020.648 ppb
2017-07-057070402-010.851 ppb
2017-07-057070402-02ND
2017-10-047100869-011.83 ppb
2017-10-047100869-020.746 ppb