Dibromochloromethane
Birmingham Water Works Board
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.
96
Samples
0
Samples exceeding legal limit (MCL)
67
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.682 ppb | 16 | 9 | ND - 2.45 ppb |
| 2015 | 1.09 ppb | 14 | 13 | ND - 2.73 ppb |
| 2016 | 0.968 ppb | 20 | 12 | ND - 5.88 ppb |
| 2017 | 0.949 ppb | 14 | 12 | ND - 2.01 ppb |
| 2018 | 0.894 ppb | 16 | 13 | ND - 2.13 ppb |
| 2019 | 0.507 ppb | 16 | 8 | ND - 1.75 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 |
|---|---|---|
| 2014-02-10 | 73802102014-4V | ND |
| 2014-02-10 | 73802102014-3V | 0.610 ppb |
| 2014-02-10 | 73802102014-2V | ND |
| 2014-02-10 | 73802102014-1V | ND |
| 2014-06-12 | 738-061214-VOC-3 | 1.45 ppb |
| 2014-06-12 | 738-061214-VOC-4 | 0.840 ppb |
| 2014-06-12 | 738-061214-VOC-2 | 0.590 ppb |
| 2014-06-12 | 738-061214-VOC-1 | ND |
| 2014-08-11 | 73808112014-30 | 2.45 ppb |
| 2014-08-11 | 73808112014-29 | 1.15 ppb |
| 2014-08-11 | 73808112014-27 | ND |
| 2014-08-11 | 73808112014-28 | ND |
| 2014-11-10 | 738-111014-VOC-4 | 2.28 ppb |
| 2014-11-10 | 738-111014-VOC-1 | ND |
| 2014-11-10 | 738-111014-VOC-2 | 0.640 ppb |
| 2014-11-10 | 738-111014-VOC-3 | 0.900 ppb |
| 2015-02-09 | 73802102015-15 | 0.900 ppb |
| 2015-02-09 | 73802102015-13 | ND |
| 2015-02-09 | 73802102015-14 | 0.640 ppb |
| 2015-02-09 | 73802102015-16 | 2.28 ppb |
| 2015-05-11 | 73805112015-2V | 0.680 ppb |
| 2015-05-11 | 73805112015-4V | 1.18 ppb |
| 2015-05-11 | 73805112015-1V | 0.560 ppb |
| 2015-05-11 | 73805112015-3V | 1.66 ppb |
| 2015-08-10 | 73808102015-29 | 2.73 ppb |
| 2015-08-10 | 73808102015-28 | 1.58 ppb |
| 2015-11-09 | 73811092015-32 | 0.640 ppb |
| 2015-11-09 | 73811092015-33 | 0.640 ppb |
| 2015-11-09 | 73811092015-35 | 0.710 ppb |
| 2015-11-09 | 73811092015-34 | 1.06 ppb |
| 2016-02-08 | 738-020816-VOC-1 | ND |
| 2016-02-08 | 738-020816-VOC-2 | 0.550 ppb |
| 2016-02-08 | 738-020816-VOC-3 | 0.800 ppb |
| 2016-02-08 | 738-020816-VOC-4 | 0.550 ppb |
| 2016-05-09 | 73805092016-29 | ND |
| 2016-05-09 | 738-050916-VOC-2 | ND |
| 2016-05-09 | 738-050916-VOC-1 | ND |
| 2016-05-09 | 73805092016-28 | ND |
| 2016-05-09 | 738-050916-VOC-4 | 0.630 ppb |
| 2016-05-09 | 73805092016-31 | 0.630 ppb |
| 2016-05-09 | 738-050916-VOC-3 | 1.27 ppb |
| 2016-05-09 | 73805092016-30 | 1.27 ppb |
| 2016-08-08 | 73808082016-4 | ND |
| 2016-08-08 | 73808082016-3 | ND |
| 2016-08-08 | 73808082016-1 | 1.51 ppb |
| 2016-08-08 | 73808082016-2 | 4.69 ppb |
| 2016-11-30 | 738-113016-VOC-2 | 0.640 ppb |
| 2016-11-30 | 73811302016-2V | 5.88 ppb |
| 2016-11-30 | 738-113016-VOC-1 | ND |
| 2016-11-30 | 73811302016-1V | 0.940 ppb |
| 2017-02-28 | 738-022817-VOC-1 | ND |
| 2017-02-28 | 738-022817-VOC-2 | ND |
| 2017-02-28 | 738-022817-VOC-4 | 0.600 ppb |
| 2017-02-28 | 738-022817-VOC-3 | 1.000 ppb |
| 2017-05-08 | 73805082017-1V | 1.11 ppb |
| 2017-05-08 | 73805082017-2V | 0.880 ppb |
| 2017-08-30 | 738-083017-VOC-4 | 0.930 ppb |
| 2017-08-30 | 738-083017-VOC-2 | 0.720 ppb |
| 2017-08-30 | 738-083017-VOC-1 | 0.560 ppb |
| 2017-08-30 | 738-083017-VOC-3 | 1.95 ppb |
| 2017-11-27 | 73811272017-1 | 0.780 ppb |
| 2017-11-27 | 73811272017-2 | 1.33 ppb |
| 2017-11-27 | 73811272017-4 | 1.41 ppb |
| 2017-11-27 | 73811272017-3 | 2.01 ppb |
| 2018-02-12 | 738-1802-VOC-4 | ND |
| 2018-02-12 | 738-1802-VOC-3 | 0.920 ppb |
| 2018-02-12 | 738-1802-VOC-2 | 0.680 ppb |
| 2018-02-12 | 738-1802-VOC-1 | ND |
| 2018-05-14 | 738-051418-VOC-2 | 0.710 ppb |
| 2018-05-14 | 738-051418-VOC-1 | ND |
| 2018-05-14 | 738-051418-VOC-3 | 2.13 ppb |
| 2018-05-14 | 738-051418-VOC-4 | 1.42 ppb |
| 2018-08-13 | 2018080912-021 | 1.83 ppb |
| 2018-08-13 | 2018080912-022 | 1.75 ppb |
| 2018-08-13 | 2018080912-020 | 0.790 ppb |
| 2018-08-13 | 2018080912-019 | 0.590 ppb |
| 2018-11-13 | 2018110910-022 | 1.06 ppb |
| 2018-11-13 | 2018110910-021 | 1.01 ppb |
| 2018-11-13 | 2018110910-020 | 0.740 ppb |
| 2018-11-13 | 2018110910-019 | 0.680 ppb |
| 2019-02-11 | 2019020411-020 | ND |
| 2019-02-11 | 2019020411-023 | 0.580 ppb |
| 2019-02-11 | 2019020411-021 | 0.650 ppb |
| 2019-02-11 | 2019020411-022 | 1.25 ppb |
| 2019-05-13 | 2019050811-022 | 1.75 ppb |
| 2019-05-13 | 2019050811-023 | 0.680 ppb |
| 2019-05-13 | 2019050811-020 | ND |
| 2019-05-13 | 2019050811-021 | ND |
| 2019-08-12 | 2019080710-022 | 1.72 ppb |
| 2019-08-12 | 2019080710-023 | 0.570 ppb |
| 2019-08-12 | 2019080710-021 | ND |
| 2019-08-12 | 2019080710-020 | ND |
| 2019-11-12 | 2019110610-022 | 0.910 ppb |
| 2019-11-12 | 2019110610-021 | ND |
| 2019-11-12 | 2019110610-023 | ND |
| 2019-11-12 | 2019110610-020 | ND |