Dibromochloromethane
Bradford City Water Authority
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.938 ppb | 16 | 7 | ND - 3.00 ppb |
| 2019 | 0.945 ppb | 16 | 13 | ND - 2.28 ppb |
| 2020 | 1.58 ppb | 16 | 16 | 0.584 ppb - 2.85 ppb |
| 2021 | 0.950 ppb | 16 | 14 | ND - 1.74 ppb |
| 2022 | 0.880 ppb | 16 | 11 | ND - 2.82 ppb |
| 2023 | 1.44 ppb | 16 | 13 | ND - 2.64 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-14 | (704) 704 Co | ND |
| 2018-03-14 | (703) 703 Co | ND |
| 2018-03-14 | (701) 701 Co | ND |
| 2018-03-14 | (702) 702 Co | ND |
| 2018-06-12 | (703) 703 Co | ND |
| 2018-06-12 | (701) 701 Co | 1.000 ppb |
| 2018-06-12 | (704) 704 Co | ND |
| 2018-06-12 | (702) 702 Co | 2.00 ppb |
| 2018-09-18 | (703) 703 Co | 3.00 ppb |
| 2018-09-18 | (701) 701 Co | 3.00 ppb |
| 2018-09-18 | (704) 704 Co | 3.00 ppb |
| 2018-09-18 | (702) 702 Co | 2.00 ppb |
| 2018-12-18 | (702) 702 Co | ND |
| 2018-12-18 | (703) 703 Co | 1.000 ppb |
| 2018-12-18 | (704) 704 Co | ND |
| 2018-12-18 | (701) 701 Co | ND |
| 2019-03-12 | 19C1742-02 | 0.939 ppb |
| 2019-03-12 | 19C1742-04 | 0.570 ppb |
| 2019-03-12 | 19C1742-03 | 0.545 ppb |
| 2019-03-12 | 19C1742-01 | 0.614 ppb |
| 2019-06-12 | 19F0212-03 | ND |
| 2019-06-12 | 19F0212-02 | ND |
| 2019-06-12 | 19F0212-01 | ND |
| 2019-06-12 | 19F0212-04 | 0.547 ppb |
| 2019-09-17 | 19I0850-01 | 1.99 ppb |
| 2019-09-17 | 19I0850-04 | 1.80 ppb |
| 2019-09-17 | 19I0850-03 | 2.03 ppb |
| 2019-09-17 | 19I0850-02 | 2.28 ppb |
| 2019-12-17 | 19L0037-04 | 0.605 ppb |
| 2019-12-17 | 19L0037-03 | 0.935 ppb |
| 2019-12-17 | 19L0037-02 | 0.988 ppb |
| 2019-12-17 | 19L0037-01 | 1.28 ppb |
| 2020-03-17 | 0.954 ppb | |
| 2020-03-17 | 1.33 ppb | |
| 2020-03-17 | 1.23 ppb | |
| 2020-03-17 | 0.966 ppb | |
| 2020-06-16 | 0.621 ppb | |
| 2020-06-16 | 0.584 ppb | |
| 2020-06-16 | 1.04 ppb | |
| 2020-06-16 | 0.770 ppb | |
| 2020-09-30 | 2.51 ppb | |
| 2020-09-30 | 2.79 ppb | |
| 2020-09-30 | 2.85 ppb | |
| 2020-09-30 | 2.10 ppb | |
| 2020-12-15 | 1.86 ppb | |
| 2020-12-15 | 1.96 ppb | |
| 2020-12-15 | 2.26 ppb | |
| 2020-12-15 | 1.39 ppb | |
| 2021-03-17 | ND | |
| 2021-03-17 | 1.10 ppb | |
| 2021-03-17 | 1.74 ppb | |
| 2021-03-17 | 1.06 ppb | |
| 2021-06-16 | 0.929 ppb | |
| 2021-06-16 | 1.16 ppb | |
| 2021-06-16 | 0.990 ppb | |
| 2021-06-16 | ND | |
| 2021-09-15 | 1.12 ppb | |
| 2021-09-15 | 0.991 ppb | |
| 2021-09-15 | 0.947 ppb | |
| 2021-09-15 | 1.21 ppb | |
| 2021-12-15 | 1.11 ppb | |
| 2021-12-15 | 0.785 ppb | |
| 2021-12-15 | 1.22 ppb | |
| 2021-12-15 | 0.841 ppb | |
| 2022-03-15 | ND | |
| 2022-03-15 | ND | |
| 2022-03-15 | ND | |
| 2022-03-15 | ND | |
| 2022-06-14 | 0.649 ppb | |
| 2022-06-14 | 0.705 ppb | |
| 2022-06-14 | 0.640 ppb | |
| 2022-06-14 | 0.739 ppb | |
| 2022-09-13 | ND | |
| 2022-09-13 | 2.42 ppb | |
| 2022-09-13 | 2.82 ppb | |
| 2022-09-13 | 2.75 ppb | |
| 2022-12-14 | 1.15 ppb | |
| 2022-12-14 | 0.748 ppb | |
| 2022-12-14 | 0.615 ppb | |
| 2022-12-14 | 0.843 ppb | |
| 2023-03-14 | ND | |
| 2023-03-14 | 0.584 ppb | |
| 2023-03-14 | ND | |
| 2023-03-14 | ND | |
| 2023-06-14 | 1.30 ppb | |
| 2023-06-14 | 1.12 ppb | |
| 2023-06-14 | 1.40 ppb | |
| 2023-06-14 | 1.07 ppb | |
| 2023-09-13 | 2.40 ppb | |
| 2023-09-13 | 2.37 ppb | |
| 2023-09-13 | 2.19 ppb | |
| 2023-09-13 | 2.54 ppb | |
| 2023-12-13 | 2.14 ppb | |
| 2023-12-13 | 1.75 ppb | |
| 2023-12-13 | 2.64 ppb | |
| 2023-12-13 | 1.49 ppb |