Dibromochloromethane
Vandalia
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 | 0.974 ppb | 8 | 8 | 0.725 ppb - 1.47 ppb |
| 2019 | 0.923 ppb | 8 | 6 | ND - 1.95 ppb |
| 2020 | 1.32 ppb | 8 | 8 | 0.598 ppb - 2.01 ppb |
| 2021 | 1.29 ppb | 8 | 8 | 0.923 ppb - 1.54 ppb |
| 2022 | 1.46 ppb | 8 | 8 | 0.850 ppb - 2.31 ppb |
| 2023 | 0.957 ppb | 8 | 6 | ND - 2.81 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 |
|---|---|---|
| 2018-01-09 | 8011604-01 | 0.910 ppb |
| 2018-01-09 | 8011604-02 | 0.842 ppb |
| 2018-04-09 | 8041667-01 | 0.735 ppb |
| 2018-04-09 | 8041667-02 | 0.725 ppb |
| 2018-07-11 | 8072399-01 | 1.41 ppb |
| 2018-07-11 | 8072399-02 | 1.47 ppb |
| 2018-10-08 | 8101879-02 | 0.887 ppb |
| 2018-10-08 | 8101879-01 | 0.816 ppb |
| 2019-01-07 | 9010879-02 | 0.700 ppb |
| 2019-01-07 | 9010879-01 | 0.638 ppb |
| 2019-04-09 | 9042419-01 | ND |
| 2019-04-09 | 9042419-02 | ND |
| 2019-07-23 | 9074908-02 | 1.92 ppb |
| 2019-07-23 | 9074908-01 | 1.95 ppb |
| 2019-10-15 | 9103589-02 | 1.45 ppb |
| 2019-10-15 | 9103589-01 | 0.722 ppb |
| 2020-01-14 | 0012866-02 | 0.758 ppb |
| 2020-01-14 | 0012866-01 | 0.598 ppb |
| 2020-04-27 | 0044869-01 | 0.892 ppb |
| 2020-04-27 | 0044869-02 | 0.980 ppb |
| 2020-07-13 | 0072534-02 | 1.77 ppb |
| 2020-07-13 | 0072534-01 | 2.01 ppb |
| 2020-10-20 | 0104055-02 | 1.81 ppb |
| 2020-10-20 | 0104055-01 | 1.71 ppb |
| 2021-01-26 | EA04391-02 | 1.04 ppb |
| 2021-01-26 | EA04391-01 | 0.923 ppb |
| 2021-04-12 | ED02503-01 | 1.27 ppb |
| 2021-04-12 | ED02503-02 | 1.25 ppb |
| 2021-07-27 | EG05728-01 | 1.44 ppb |
| 2021-07-27 | EG05728-02 | 1.44 ppb |
| 2021-10-12 | EJ02579-01 | 1.54 ppb |
| 2021-10-12 | EJ02579-02 | 1.45 ppb |
| 2022-01-26 | FA04829-02 | 0.850 ppb |
| 2022-01-26 | FA04829-01 | 0.889 ppb |
| 2022-04-27 | FD04921-01 | 1.23 ppb |
| 2022-04-27 | FD04921-02 | 1.21 ppb |
| 2022-07-27 | FG05375-01 | 2.31 ppb |
| 2022-07-27 | FG05375-02 | 2.30 ppb |
| 2022-10-26 | FJ05042-01 | 1.49 ppb |
| 2022-10-26 | FJ05042-02 | 1.38 ppb |
| 2023-01-10 | GA01807-01 | 1.08 ppb |
| 2023-01-10 | GA01807-02 | 0.920 ppb |
| 2023-04-11 | GD02112-01 | ND |
| 2023-04-11 | GD02112-02 | ND |
| 2023-07-26 | GG04752-01 | 0.657 ppb |
| 2023-07-26 | GG04752-02 | 0.729 ppb |
| 2023-10-24 | GJ04606-01 | 1.46 ppb |
| 2023-10-24 | GJ04606-02 | 2.81 ppb |