Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Bromoform

Rockford

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.222 ppb184ND - 1.30 ppb
20130.325 ppb122ND - 2.10 ppb
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2012-04-042040674-01ND
2012-04-042040673-02ND
2012-04-042040673-03ND
2012-04-042040674-020.980 ppb
2012-04-042040674-031.000 ppb
2012-04-042040673-01ND
2012-07-022071380-02ND
2012-07-022071380-05ND
2012-07-022071380-03ND
2012-07-022071380-01ND
2012-07-022071380-06ND
2012-07-022071380-041.30 ppb
2012-10-022100632-01ND
2012-10-022100632-06ND
2012-10-022100632-03ND
2012-10-022100632-040.720 ppb
2012-10-022100632-02ND
2012-10-022100632-05ND
2013-01-023010093-06ND
2013-01-023010093-05ND
2013-01-023010093-022.10 ppb
2013-01-023010093-01ND
2013-01-023010093-04ND
2013-01-023010093-031.80 ppb
2013-04-023040535-01ND
2013-04-023040535-02ND
2013-06-263063690-02ND
2013-06-263063690-01ND
2013-10-013100405-01ND
2013-10-013100405-02ND
2014-01-024010514-01ND
2014-01-024010514-02ND
2014-04-014040413-02ND
2014-04-014040413-01ND
2014-07-024070527-01ND
2014-07-024070527-02ND
2014-10-014100242-01ND
2014-10-014100242-02ND
2015-01-075010737-01ND
2015-01-075010737-02ND
2015-04-015040181-01ND
2015-04-015040181-02ND
2015-07-015070280-02ND
2015-07-015070280-01ND
2015-10-075101065-01ND
2015-10-075101065-02ND
2016-01-066010729-02ND
2016-01-066010729-01ND
2016-04-066040926-02ND
2016-04-066040926-01ND
2016-07-066070717-02ND
2016-07-066070717-01ND
2016-10-056100805-02ND
2016-10-056100805-01ND
2017-01-117011616-02ND
2017-01-117011616-01ND
2017-04-057040786-01ND
2017-04-057040786-02ND
2017-07-057070402-01ND
2017-07-057070402-02ND
2017-10-047100869-01ND
2017-10-047100869-02ND