Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Dibromochloromethane

Wilbraham Water Department (MWRA)

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

22

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.114 ppb245ND - 0.630 ppb
20130.170 ppb247ND - 0.650 ppb
20140.334 ppb2612ND - 0.960 ppb
20150.714 ppb87ND - 1.10 ppb
20160.828 ppb87ND - 1.25 ppb
20171.09 ppb880.820 ppb - 1.36 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 Result
2015-02-170.650 ppb
2015-02-170.960 ppb
2015-05-21ND
2015-05-210.600 ppb
2015-08-180.590 ppb
2015-08-180.920 ppb
2015-11-170.890 ppb
2015-11-171.10 ppb
2016-02-160.850 ppb
2016-02-161.000 ppb
2016-05-170.940 ppb
2016-05-170.850 ppb
2016-08-16ND
2016-08-180.830 ppb
2016-11-140.900 ppb
2016-11-141.25 ppb
2017-02-141.25 ppb
2017-02-140.990 ppb
2017-05-160.940 ppb
2017-05-161.07 ppb
2017-08-140.820 ppb
2017-08-140.980 ppb
2017-11-131.33 ppb
2017-11-131.36 ppb