Bromodichloromethane
Cass County Public Water Supply District 10
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 | 0.708 ppb | 12 | 12 | 0.510 ppb - 0.960 ppb |
2015 | 0.860 ppb | 3 | 3 | 0.550 ppb - 1.42 ppb |
2016 | 1.31 ppb | 1 | 1 | 1.31 ppb |
2017 | 1.12 ppb | 1 | 1 | 1.12 ppb |
2018 | 1.29 ppb | 1 | 1 | 1.29 ppb |
2019 | 1.22 ppb | 1 | 1 | 1.22 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 |
---|---|---|
2014-01-09 | AC16716 | 0.510 ppb |
2014-01-09 | AC16717 | 0.540 ppb |
2014-01-09 | AC16718 | 0.510 ppb |
2014-01-09 | AC16715 | 0.640 ppb |
2014-04-16 | AC21622 | 0.960 ppb |
2014-04-16 | AC21623 | 0.780 ppb |
2014-04-16 | AC21624 | 0.730 ppb |
2014-04-16 | AC21625 | 0.700 ppb |
2014-07-28 | AC30649 | 0.940 ppb |
2014-07-28 | AC30647 | 0.890 ppb |
2014-10-21 | AC37659 | 0.660 ppb |
2014-10-21 | AC37660 | 0.630 ppb |
2015-01-19 | AC40384 | 0.610 ppb |
2015-01-19 | AC40383 | 0.550 ppb |
2015-07-21 | AC54289 | 1.42 ppb |
2016-07-11 | AC79697 | 1.31 ppb |
2017-07-17 | AD01400 | 1.12 ppb |
2018-07-18 | AD29177 | 1.29 ppb |
2019-07-12 | AD51795 | 1.22 ppb |