Bromochloromethane
Rosemount
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 |
|---|---|---|---|---|
| 2013 | ND | 6 | 0 | ND |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 4 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2013-03-26 | 1018721006 | ND |
| 2013-03-26 | 1018721003 | ND |
| 2013-03-26 | 1018721009 | ND |
| 2013-10-30 | 1056181003 | ND |
| 2013-10-30 | 1056181009 | ND |
| 2013-10-30 | 1056181006 | ND |
| 2018-10-24 | 18J1245-03 | ND |
| 2018-10-24 | 18J1245-02 | ND |
| 2018-10-24 | 18J1247-01 | ND |
| 2018-10-24 | 18J1247-02 | ND |
| 2018-10-24 | 18J1247-03 | ND |
| 2019-02-15 | 19B0722-01 | ND |
| 2019-04-29 | 19D2437-01 | ND |
| 2019-09-12 | 19I0608-01 | ND |
| 2019-11-25 | 19K1669-01 | ND |
| 2020-01-07 | 20A0140-05 | ND |
| 2020-01-07 | 20A0140-04 | ND |
| 2020-01-07 | 20A0140-03 | ND |
| 2020-05-19 | 20E1077-01 | ND |
| 2021-05-03 | 21E0039-03 | ND |
| 2021-05-03 | 21E0039-05 | ND |
| 2021-05-03 | 21E0039-06 | ND |
| 2021-05-03 | 21E0039-02 | ND |
| 2021-05-03 | 21E0038-01 | ND |
| 2022-05-17 | 22E1321-01 | ND |
| 2023-10-31 | 23J1741-01 | ND |
| 2023-10-31 | 23J1741-02 | ND |
| 2023-10-31 | 23J1741-03 | ND |
| 2023-10-31 | 23J1743-01 | ND |