Bromochloromethane
Settlers Crossing Water System 2
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 | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2018-06-05 | AE28695 | ND |
| 2018-08-21 | AE37879 | ND |
| 2018-11-06 | AE45427 | ND |
| 2019-02-28 | AE56604 | ND |
| 2020-06-19 | AF16354 | ND |
| 2021-06-22 | AF59079 | ND |
| 2022-08-17 | AG09698 | ND |
| 2023-02-21 | AG29721 | ND |
| 2023-06-13 | AG44264 | ND |
| 2023-08-02 | AG51100 | ND |