Bromodichloromethane
Menomonie Waterworks
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.417 ppb | 3 | 2 | ND - 1.10 ppb |
2015 | 0.903 ppb | 3 | 3 | 0.160 ppb - 2.30 ppb |
2016 | 1.06 ppb | 3 | 3 | 0.630 ppb - 1.60 ppb |
2017 | 0.770 ppb | 4 | 4 | 0.530 ppb - 1.000 ppb |
2018 | 0.867 ppb | 3 | 2 | ND - 1.40 ppb |
2019 | 0.425 ppb | 6 | 4 | ND - 1.000 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 |
---|---|---|
2014-02-25 | 771970 | 0.150 ppb |
2014-02-25 | 771973 | ND |
2014-05-20 | 790543 | 1.10 ppb |
2015-02-17 | 844113 | 0.250 ppb |
2015-05-27 | 861882 | 0.160 ppb |
2015-05-27 | 861877 | 2.30 ppb |
2016-02-16 | 905623 | 1.60 ppb |
2016-04-26 | 917937 | 0.630 ppb |
2016-04-26 | 917938 | 0.940 ppb |
2017-02-14 | 973717 | 0.800 ppb |
2017-05-03 | 986603 | 0.750 ppb |
2017-05-03 | 986609 | 0.530 ppb |
2017-05-03 | 986613 | 1.000 ppb |
2018-02-28 | 1042829 | 1.20 ppb |
2018-04-24 | 1051761 | ND |
2018-04-24 | 1051758 | 1.40 ppb |
2019-03-27 | 1111875 | 0.460 ppb |
2019-04-02 | 1112787 | ND |
2019-04-02 | 1112784 | 1.000 ppb |
2019-07-16 | 1134810 | 0.620 ppb |
2019-07-23 | 1136241 | ND |
2019-11-06 | 1159612 | 0.470 ppb |