Dibromochloromethane
Gloucester City W Department
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.
114
Samples
0
Samples exceeding legal limit (MCL)
72
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 2.21 ppb | 20 | 19 | ND - 5.13 ppb |
| 2015 | 2.90 ppb | 20 | 19 | ND - 7.97 ppb |
| 2016 | 1.57 ppb | 18 | 14 | ND - 4.52 ppb |
| 2017 | 1.51 ppb | 20 | 9 | ND - 8.10 ppb |
| 2018 | 0.0450 ppb | 20 | 1 | ND - 0.900 ppb |
| 2019 | 0.563 ppb | 16 | 10 | ND - 1.37 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 |
|---|---|---|
| 2014-01-15 | 140115/2114-04T | 1.26 ppb |
| 2014-01-15 | 140115/2114-03T | 1.68 ppb |
| 2014-01-15 | 140115/2114-02T | 4.44 ppb |
| 2014-01-15 | 140115/2114-01T | 2.99 ppb |
| 2014-03-10 | 14031562-001 | 1.000 ppb |
| 2014-04-02 | 140402/2227-04T | 0.981 ppb |
| 2014-04-02 | 140402/2227-03T | 2.04 ppb |
| 2014-04-02 | 140402/2227-02T | 0.892 ppb |
| 2014-04-02 | 140402/2227-01T | 2.59 ppb |
| 2014-06-11 | 14061868-001 | 0.700 ppb |
| 2014-07-01 | 140701/2393-04T | ND |
| 2014-07-01 | 140701/2393-03T | 4.93 ppb |
| 2014-07-01 | 140701/2393-02T | 3.88 ppb |
| 2014-07-01 | 140701/2393-01T | 1.70 ppb |
| 2014-10-02 | 141002/2558-03T | 5.13 ppb |
| 2014-10-02 | 141002/2558-04T | 2.58 ppb |
| 2014-10-02 | 141002/2558-02T | 0.679 ppb |
| 2014-10-02 | 141002/2558-01T | 0.923 ppb |
| 2014-12-04 | 141204/2653-03 | 2.48 ppb |
| 2014-12-09 | 141210/2670-03 | 3.33 ppb |
| 2015-01-07 | 150107/2726-04T | 1.19 ppb |
| 2015-01-07 | 150107/2726-03T | 6.04 ppb |
| 2015-01-07 | 150107/2726-02T | 4.56 ppb |
| 2015-01-07 | 150107/2726-01T | 1.14 ppb |
| 2015-01-14 | 150114/2713-01 | 2.12 ppb |
| 2015-04-02 | 150402/2853-4T | 1.49 ppb |
| 2015-04-02 | 150402/2853-3T | 1.46 ppb |
| 2015-04-02 | 150402/2853-2T | 1.12 ppb |
| 2015-04-02 | 150402/2853-1T | 0.808 ppb |
| 2015-06-29 | 150629/3018-1 | 0.923 ppb |
| 2015-07-08 | 150708/3052-4T | 0.725 ppb |
| 2015-07-08 | 150708/3052-3T | 1.63 ppb |
| 2015-07-08 | 150708/3052-2T | 3.70 ppb |
| 2015-07-08 | 150708/3052-1T | 4.19 ppb |
| 2015-09-17 | 150917/3157-1 | 7.86 ppb |
| 2015-10-08 | 151008/3238-4T | 1.49 ppb |
| 2015-10-08 | 151008/3238-3T | 5.13 ppb |
| 2015-10-08 | 151008/3238-2T | 7.97 ppb |
| 2015-10-08 | 151008/3238-1T | ND |
| 2015-11-05 | 151105/3284-4 | 4.43 ppb |
| 2016-01-07 | 160107/3376-4T | 1.34 ppb |
| 2016-01-07 | 160107/3376-3T | 1.99 ppb |
| 2016-01-07 | 160107/3376-2T | 1.91 ppb |
| 2016-01-07 | 160107/3376-1T | 1.78 ppb |
| 2016-01-13 | 160114/3382-1 | 2.66 ppb |
| 2016-04-19 | 160419/3573-3 | 0.918 ppb |
| 2016-04-20 | 160420/3577-4T | ND |
| 2016-04-20 | 160420/3577-3T | ND |
| 2016-04-20 | 160420/3577-2T | ND |
| 2016-04-20 | 160420/3577-1T | ND |
| 2016-07-19 | 160719/3742-4T | 0.635 ppb |
| 2016-07-19 | 160719/3742-2T | 1.91 ppb |
| 2016-07-19 | 160719/3742-3T | 4.47 ppb |
| 2016-07-19 | 160719/3742-1T | 0.740 ppb |
| 2016-10-06 | 161006/3893-2T | 0.711 ppb |
| 2016-10-06 | 161006/3893-1T | 2.54 ppb |
| 2016-10-06 | 161006/3893-3T | 2.21 ppb |
| 2016-10-06 | 161006/3893-4T | 4.52 ppb |
| 2017-01-25 | 34928702 | 0.900 ppb |
| 2017-01-25 | 34928703 | 4.10 ppb |
| 2017-01-25 | 34928701 | 1.90 ppb |
| 2017-01-25 | 34928704 | 2.00 ppb |
| 2017-04-28 | 35950801 | 1.40 ppb |
| 2017-04-28 | 35950804 | 3.60 ppb |
| 2017-04-28 | 35950802 | 8.10 ppb |
| 2017-04-28 | 35950803 | 7.50 ppb |
| 2017-06-07 | 36441101 | ND |
| 2017-07-20 | 36977504 | ND |
| 2017-07-20 | 36977502 | ND |
| 2017-07-20 | 36977503 | ND |
| 2017-07-20 | 36977501 | ND |
| 2017-07-20 | 36977701 | ND |
| 2017-09-19 | 37548101 | 0.600 ppb |
| 2017-10-11 | 37833603 | ND |
| 2017-10-11 | 37833602 | ND |
| 2017-10-11 | 37833601 | ND |
| 2017-10-11 | 37833604 | ND |
| 2017-12-12 | 38493501 | ND |
| 2018-01-26 | 38859404 | ND |
| 2018-01-26 | 38859401 | ND |
| 2018-01-26 | 38859402 | ND |
| 2018-01-26 | 38859403 | ND |
| 2018-03-14 | 39403001 | 0.900 ppb |
| 2018-04-11 | 39620401 | ND |
| 2018-04-11 | 39620403 | ND |
| 2018-04-11 | 39620402 | ND |
| 2018-04-11 | 39620404 | ND |
| 2018-04-12 | 39620405 | ND |
| 2018-07-12 | 40809701 | ND |
| 2018-07-19 | 40882001 | ND |
| 2018-07-19 | 40882004 | ND |
| 2018-07-19 | 40882003 | ND |
| 2018-07-19 | 40882002 | ND |
| 2018-10-03 | 41943903 | ND |
| 2018-10-03 | 41943902 | ND |
| 2018-10-03 | 41943904 | ND |
| 2018-10-03 | 41943901 | ND |
| 2018-10-03 | 41943905 | ND |
| 2019-01-17 | R81289TTHM | 1.36 ppb |
| 2019-01-17 | R81290TTHM | 1.28 ppb |
| 2019-01-17 | R81291TTHM | ND |
| 2019-01-17 | R81288TTHM | 0.760 ppb |
| 2019-04-11 | R83523TTHM | 0.610 ppb |
| 2019-04-11 | R83524TTHM | 0.870 ppb |
| 2019-04-11 | R83525TTHM | 0.680 ppb |
| 2019-05-02 | R84349TTHM | 1.37 ppb |
| 2019-07-16 | R86813TTHM | ND |
| 2019-07-16 | R86814TTHM | 0.590 ppb |
| 2019-07-16 | R86815TTHM | 0.800 ppb |
| 2019-07-16 | R86816TTHM | ND |
| 2019-10-02 | R89269TTHM | ND |
| 2019-10-02 | R89272TTHM | 0.680 ppb |
| 2019-10-02 | R89270TTHM | ND |
| 2019-10-02 | R89271TTHM | ND |