Dibromochloromethane
Mattoon
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 1.51 ppb | 16 | 14 | ND - 3.33 ppb |
2015 | 2.60 ppb | 16 | 16 | 1.11 ppb - 5.30 ppb |
2016 | 0.924 ppb | 16 | 12 | ND - 1.78 ppb |
2017 | 1.04 ppb | 16 | 15 | ND - 1.68 ppb |
2018 | 1.37 ppb | 16 | 16 | 0.929 ppb - 1.97 ppb |
2019 | 0.801 ppb | 16 | 12 | ND - 1.57 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 | Lab ID | Result |
---|---|---|
2014-02-11 | 4021465-01 | 0.957 ppb |
2014-02-11 | 4021465-02 | 0.712 ppb |
2014-02-11 | 4021465-03 | 0.629 ppb |
2014-02-11 | 4021465-04 | 0.650 ppb |
2014-05-06 | 4051027-01 | 0.807 ppb |
2014-05-06 | 4051027-02 | 0.881 ppb |
2014-05-06 | 4051027-03 | 1.16 ppb |
2014-05-06 | 4051027-04 | 0.930 ppb |
2014-08-05 | 4081171-01 | 3.33 ppb |
2014-08-05 | 4081171-02 | 2.50 ppb |
2014-08-05 | 4081171-03 | 2.90 ppb |
2014-08-05 | 4081171-04 | 3.23 ppb |
2014-11-04 | 4110776-03 | 2.78 ppb |
2014-11-04 | 4110776-04 | 2.73 ppb |
2014-11-04 | 4110776-02 | ND |
2014-11-04 | 4110776-01 | ND |
2015-02-04 | 5020583-01 | 5.21 ppb |
2015-02-04 | 5020583-04 | 5.29 ppb |
2015-02-04 | 5020583-02 | 5.08 ppb |
2015-02-04 | 5020583-03 | 5.30 ppb |
2015-05-05 | 5050888-01 | 3.44 ppb |
2015-05-05 | 5050888-04 | 3.54 ppb |
2015-05-05 | 5050888-03 | 1.66 ppb |
2015-05-05 | 5050888-02 | 1.53 ppb |
2015-08-05 | 5080791-02 | 1.40 ppb |
2015-08-05 | 5080791-03 | 1.60 ppb |
2015-08-05 | 5080791-01 | 1.59 ppb |
2015-08-05 | 5080791-04 | 1.36 ppb |
2015-11-04 | 5110716-02 | 1.12 ppb |
2015-11-04 | 5110716-03 | 1.19 ppb |
2015-11-04 | 5110716-01 | 1.11 ppb |
2015-11-04 | 5110716-04 | 1.16 ppb |
2016-02-03 | 6020696-04 | ND |
2016-02-03 | 6020696-03 | ND |
2016-02-03 | 6020696-02 | ND |
2016-02-03 | 6020696-01 | ND |
2016-05-04 | 6050695-02 | 1.12 ppb |
2016-05-04 | 6050695-04 | 0.961 ppb |
2016-05-04 | 6050695-01 | 0.998 ppb |
2016-05-04 | 6050695-03 | 1.18 ppb |
2016-08-02 | 6080724-04 | 1.46 ppb |
2016-08-02 | 6080724-01 | 1.46 ppb |
2016-08-02 | 6080724-02 | 0.846 ppb |
2016-08-02 | 6080724-03 | 0.837 ppb |
2016-11-02 | 6110523-01 | 1.32 ppb |
2016-11-02 | 6110523-04 | 1.71 ppb |
2016-11-02 | 6110523-02 | 1.78 ppb |
2016-11-02 | 6110523-03 | 1.11 ppb |
2017-02-01 | 7020191-01 | 1.35 ppb |
2017-02-01 | 7020191-04 | 1.22 ppb |
2017-02-01 | 7020191-03 | 1.30 ppb |
2017-02-01 | 7020191-02 | 1.17 ppb |
2017-05-03 | 7050690-03 | 0.662 ppb |
2017-05-03 | 7050690-04 | ND |
2017-05-03 | 7050690-01 | 1.24 ppb |
2017-05-03 | 7050690-02 | 0.915 ppb |
2017-08-02 | 7080685-02 | 0.849 ppb |
2017-08-02 | 7080685-04 | 0.785 ppb |
2017-08-02 | 7080685-01 | 0.992 ppb |
2017-08-02 | 7080685-03 | 0.845 ppb |
2017-11-01 | 7110257-01 | 1.11 ppb |
2017-11-01 | 7110257-03 | 1.68 ppb |
2017-11-01 | 7110257-02 | 1.10 ppb |
2017-11-01 | 7110257-04 | 1.35 ppb |
2018-02-07 | 8021152-04 | 0.973 ppb |
2018-02-07 | 8021152-03 | 1.22 ppb |
2018-02-07 | 8021152-02 | 0.929 ppb |
2018-02-07 | 8021152-01 | 1.33 ppb |
2018-05-02 | 8050662-04 | 1.97 ppb |
2018-05-02 | 8050662-01 | 1.05 ppb |
2018-05-02 | 8050662-02 | 1.91 ppb |
2018-05-02 | 8050662-03 | 1.87 ppb |
2018-08-01 | 8080246-04 | 1.70 ppb |
2018-08-01 | 8080246-03 | 1.51 ppb |
2018-08-01 | 8080246-02 | 1.69 ppb |
2018-08-01 | 8080246-01 | 1.45 ppb |
2018-11-07 | 8111452-01 | 1.02 ppb |
2018-11-07 | 8111452-02 | 1.29 ppb |
2018-11-07 | 8111452-03 | 1.06 ppb |
2018-11-07 | 8111452-04 | 0.936 ppb |
2019-02-06 | 9021078-01 | 0.564 ppb |
2019-02-06 | 9021078-02 | 0.566 ppb |
2019-02-06 | 9021078-03 | 0.758 ppb |
2019-02-06 | 9021078-04 | 0.568 ppb |
2019-05-01 | 9050287-01 | 1.30 ppb |
2019-05-01 | 9050287-04 | 1.42 ppb |
2019-05-01 | 9050287-03 | 1.57 ppb |
2019-05-01 | 9050287-02 | 1.26 ppb |
2019-08-07 | 9081554-02 | ND |
2019-08-07 | 9081554-04 | ND |
2019-08-07 | 9081554-03 | ND |
2019-08-07 | 9081554-01 | ND |
2019-11-06 | 9111031-04 | 1.12 ppb |
2019-11-06 | 9111031-03 | 1.28 ppb |
2019-11-06 | 9111031-02 | 1.13 ppb |
2019-11-06 | 9111031-01 | 1.28 ppb |