Bromochloromethane
Warden City Of
Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.
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 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromochloromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-10 | ND | |
| 2018-07-25 | ND | |
| 2018-10-31 | ND | |
| 2019-04-08 | ND | |
| 2019-06-11 | ND | |
| 2021-03-29 | 4100649 | ND |
| 2021-06-02 | 4164639 | ND |
| 2022-03-03 | 4254624 | ND |
| 2022-03-03 | 4254624 | ND |
| 2022-03-03 | 4254624 | ND |
| 2023-04-11 | 4478121 | ND |
| 2023-09-20 | 4524656 | ND |
| 2023-10-24 | 4539329 | ND |