Bromochloromethane
Grand Harbor Water System
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-06-19 | AE30463 | ND |
| 2018-06-19 | AE30487 | ND |
| 2019-06-13 | AE70599 | ND |
| 2019-06-13 | AE70603 | ND |
| 2020-07-16 | AF19727 | ND |
| 2020-07-16 | AF19731 | ND |
| 2021-08-04 | AF64809 | ND |
| 2021-08-04 | AF64813 | ND |
| 2022-03-08 | AF88096 | ND |
| 2022-03-08 | AF88116 | ND |
| 2022-06-01 | AF99089 | ND |
| 2022-09-29 | AG15480 | ND |
| 2023-08-09 | AG51989 | ND |
| 2023-08-09 | AG51991 | ND |