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EWG's Tap Water Database — 2019 UPDATE

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Bromodichloromethane

Waukesha Water Utility

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

42

Samples

0

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.71 ppb109ND - 4.60 ppb
20131.42 ppb54ND - 3.40 ppb
20141.61 ppb98ND - 4.80 ppb
20151.29 ppb65ND - 3.70 ppb
20164.50 ppb224.50 ppb
20172.21 ppb105ND - 7.15 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2012-03-206550570.930 ppb
2012-03-206550591.000 ppb
2012-05-22664036ND
2012-08-026762044.60 ppb
2012-08-026762014.60 ppb
2012-08-026762064.40 ppb
2012-08-026762054.20 ppb
2012-08-026762024.00 ppb
2012-08-026762032.00 ppb
2012-08-026762001.40 ppb
2013-02-20706218ND
2013-02-207062220.910 ppb
2013-02-207062201.50 ppb
2013-08-277401511.30 ppb
2013-08-277401523.40 ppb
2014-03-267767530.580 ppb
2014-03-267767550.680 ppb
2014-05-077844251.80 ppb
2014-05-077844221.30 ppb
2014-05-077844190.160 ppb
2014-06-11796100ND
2014-06-117961030.780 ppb
2014-08-128105254.40 ppb
2014-08-128105264.80 ppb
2015-03-108478530.790 ppb
2015-03-108478511.20 ppb
2015-03-118478550.220 ppb
2015-08-318796121.80 ppb
2015-08-318796113.70 ppb
2015-09-29886380ND
2016-07-149333774.50 ppb
2016-07-149333764.50 ppb
2017-03-28980078ND
2017-03-289800841.40 ppb
2017-03-289800812.70 ppb
2017-05-02986361ND
2017-05-02986364ND
2017-05-31994537ND
2017-05-31994540ND
2017-07-031707308-002A4.42 ppb
2017-07-031707308-001A7.15 ppb
2017-10-1110239346.40 ppb