Bromochloromethane
Old Chisolm 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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 3 | 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 |
|---|---|---|
| 2018-12-04 | Q1849246002 | ND |
| 2018-12-13 | Q1851544011 | ND |
| 2018-12-13 | Q1851544012 | ND |
| 2019-06-06 | Q1932776002 | ND |
| 2019-06-06 | Q1932776004 | ND |
| 2019-11-21 | Q1977813003 | ND |
| 2020-12-17 | Q2050037007 | ND |
| 2020-12-17 | Q2050037009 | ND |
| 2020-12-17 | Q2050037011 | ND |
| 2021-12-09 | Q2134743004 | ND |
| 2022-10-26 | Q2232462003 | ND |
| 2022-10-26 | Q2232462005 | ND |
| 2022-10-26 | Q2232462007 | ND |
| 2023-08-15 | Q2334056001 | ND |
| 2023-08-15 | Q2334056003 | ND |