Dibromochloromethane
Effingham
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.
100
Samples
0
Samples exceeding legal limit (MCL)
97
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.01 ppb | 16 | 16 | 0.700 ppb - 1.28 ppb |
| 2015 | 1.11 ppb | 16 | 16 | 0.630 ppb - 1.64 ppb |
| 2016 | 0.698 ppb | 16 | 14 | ND - 0.958 ppb |
| 2017 | 1.26 ppb | 16 | 15 | ND - 2.11 ppb |
| 2018 | 0.879 ppb | 16 | 16 | 0.570 ppb - 1.15 ppb |
| 2019 | 0.825 ppb | 20 | 20 | 0.616 ppb - 1.10 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 |
|---|---|---|
| 2014-03-04 | 4030421-01 | 0.977 ppb |
| 2014-03-04 | 4030421-02 | 1.19 ppb |
| 2014-03-04 | 4030421-03 | 1.00 ppb |
| 2014-03-04 | 4030421-04 | 1.06 ppb |
| 2014-06-02 | 4060538-01 | 1.12 ppb |
| 2014-06-02 | 4060538-02 | 0.953 ppb |
| 2014-06-02 | 4060538-03 | 0.993 ppb |
| 2014-06-02 | 4060538-04 | 1.08 ppb |
| 2014-09-03 | 4090684-01 | 1.24 ppb |
| 2014-09-03 | 4090684-02 | 0.981 ppb |
| 2014-09-03 | 4090684-03 | 1.28 ppb |
| 2014-09-03 | 4090684-04 | 1.21 ppb |
| 2014-12-01 | 4120163-03 | 0.786 ppb |
| 2014-12-01 | 4120163-04 | 0.700 ppb |
| 2014-12-01 | 4120163-02 | 0.803 ppb |
| 2014-12-01 | 4120163-01 | 0.800 ppb |
| 2015-03-02 | 5030220-01 | 0.967 ppb |
| 2015-03-02 | 5030220-04 | 1.28 ppb |
| 2015-03-02 | 5030220-02 | 1.01 ppb |
| 2015-03-02 | 5030220-03 | 1.00 ppb |
| 2015-06-02 | 5060529-02 | 1.61 ppb |
| 2015-06-02 | 5060529-04 | 1.61 ppb |
| 2015-06-02 | 5060529-03 | 1.53 ppb |
| 2015-06-02 | 5060529-01 | 1.64 ppb |
| 2015-09-01 | 5090360-02 | 1.04 ppb |
| 2015-09-01 | 5090360-03 | 1.10 ppb |
| 2015-09-01 | 5090360-01 | 1.16 ppb |
| 2015-09-01 | 5090360-04 | 1.10 ppb |
| 2015-12-01 | 5120314-03 | 0.700 ppb |
| 2015-12-01 | 5120314-01 | 0.630 ppb |
| 2015-12-01 | 5120314-04 | 0.667 ppb |
| 2015-12-01 | 5120314-02 | 0.705 ppb |
| 2016-03-02 | 6030669-01 | 0.958 ppb |
| 2016-03-02 | 6030669-02 | 0.842 ppb |
| 2016-03-02 | 6030669-03 | 0.899 ppb |
| 2016-03-02 | 6030669-04 | 0.891 ppb |
| 2016-06-01 | 6060366-04 | 0.889 ppb |
| 2016-06-01 | 6060366-03 | 0.849 ppb |
| 2016-06-01 | 6060366-01 | 0.846 ppb |
| 2016-06-01 | 6060366-02 | 0.942 ppb |
| 2016-09-07 | 6091103-04 | 0.742 ppb |
| 2016-09-07 | 6091103-03 | 0.821 ppb |
| 2016-09-07 | 6091103-01 | 0.583 ppb |
| 2016-09-07 | 6091103-02 | 0.793 ppb |
| 2016-12-01 | 6120317-02 | ND |
| 2016-12-01 | 6120317-04 | 0.512 ppb |
| 2016-12-01 | 6120317-01 | 0.597 ppb |
| 2016-12-01 | 6120317-03 | ND |
| 2017-03-01 | 7030390-03 | 2.04 ppb |
| 2017-03-01 | 7030390-04 | 2.09 ppb |
| 2017-03-01 | 7030390-01 | 2.03 ppb |
| 2017-03-01 | 7030390-02 | 2.11 ppb |
| 2017-06-01 | 7060324-01 | ND |
| 2017-06-01 | 7060324-03 | 0.649 ppb |
| 2017-06-01 | 7060324-02 | 0.675 ppb |
| 2017-06-01 | 7060324-04 | 0.633 ppb |
| 2017-09-05 | 7090590-03 | 1.66 ppb |
| 2017-09-05 | 7090590-04 | 1.49 ppb |
| 2017-09-05 | 7090590-01 | 1.33 ppb |
| 2017-09-05 | 7090590-02 | 1.40 ppb |
| 2017-12-04 | 7120529-03 | 1.06 ppb |
| 2017-12-04 | 7120529-04 | 1.02 ppb |
| 2017-12-04 | 7120529-01 | 1.04 ppb |
| 2017-12-04 | 7120529-02 | 0.939 ppb |
| 2018-03-05 | 8030702-04 | 0.985 ppb |
| 2018-03-05 | 8030702-03 | 1.11 ppb |
| 2018-03-05 | 8030702-02 | 0.982 ppb |
| 2018-03-05 | 8030702-01 | 1.11 ppb |
| 2018-06-04 | 8060482-04 | 0.969 ppb |
| 2018-06-04 | 8060482-01 | 1.15 ppb |
| 2018-06-04 | 8060482-02 | 0.906 ppb |
| 2018-06-04 | 8060482-03 | 0.983 ppb |
| 2018-09-04 | 8090501-01 | 0.721 ppb |
| 2018-09-04 | 8090501-02 | 0.832 ppb |
| 2018-09-04 | 8090501-03 | 0.732 ppb |
| 2018-09-04 | 8090501-04 | 0.790 ppb |
| 2018-12-03 | 8120293-01 | 0.754 ppb |
| 2018-12-03 | 8120293-02 | 0.698 ppb |
| 2018-12-03 | 8120293-03 | 0.570 ppb |
| 2018-12-03 | 8120293-04 | 0.779 ppb |
| 2019-03-04 | 9030436-01 | 0.724 ppb |
| 2019-03-04 | 9030436-02 | 0.619 ppb |
| 2019-03-04 | 9030436-03 | 0.647 ppb |
| 2019-03-04 | 9030436-04 | 0.643 ppb |
| 2019-06-03 | 9060399-01 | 0.855 ppb |
| 2019-06-03 | 9060399-02 | 1.10 ppb |
| 2019-06-03 | 9060399-03 | 0.983 ppb |
| 2019-06-03 | 9060399-04 | 1.04 ppb |
| 2019-06-24 | 9064596-01 | 0.770 ppb |
| 2019-06-24 | 9064596-04 | 0.856 ppb |
| 2019-06-24 | 9064596-03 | 0.725 ppb |
| 2019-06-24 | 9064596-02 | 0.900 ppb |
| 2019-09-09 | 9091594-02 | 1.08 ppb |
| 2019-09-09 | 9091594-04 | 0.974 ppb |
| 2019-09-09 | 9091594-03 | 1.03 ppb |
| 2019-09-09 | 9091594-01 | 1.01 ppb |
| 2019-12-02 | 9120292-04 | 0.626 ppb |
| 2019-12-02 | 9120292-03 | 0.677 ppb |
| 2019-12-02 | 9120292-02 | 0.627 ppb |
| 2019-12-02 | 9120292-01 | 0.616 ppb |