Bromochloromethane
San Bernard River Estates
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 | 3 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-08-14 | AE36957 | ND |
| 2018-08-14 | AE36961 | ND |
| 2019-04-17 | AE62768 | ND |
| 2019-08-26 | AE80689 | ND |
| 2020-09-16 | AF27599 | ND |
| 2020-12-10 | AF37309 | ND |
| 2021-05-12 | AF53572 | ND |
| 2021-05-12 | AF53578 | ND |
| 2021-09-29 | AF71680 | ND |
| 2022-09-20 | AG14196 | ND |
| 2022-09-20 | AG14198 | ND |
| 2023-06-14 | AG44507 | ND |