Bromochloromethane
CTWC - Shoreline Region-Guilford 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 |
|---|---|---|---|---|
| 2014 | ND | 20 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-02-10 | 201402110107AM | ND |
| 2014-02-10 | 201402110109AM | ND |
| 2014-02-10 | 201402110093AM | ND |
| 2014-02-11 | 201402120403AM | ND |
| 2014-02-11 | 201402120573AM | ND |
| 2014-02-11 | 201402120438AM | ND |
| 2014-02-11 | 201402120674AM | ND |
| 2014-02-11 | 201402120405AM | ND |
| 2014-04-08 | 201404090510AM | ND |
| 2014-04-08 | 201404090427AM | ND |
| 2014-05-21 | 201405220417AM | ND |
| 2014-08-04 | 201408050412AM | ND |
| 2014-08-04 | 201408050418AM | ND |
| 2014-08-04 | 201408050337AM | ND |
| 2014-08-04 | 201408050384AM | ND |
| 2014-08-25 | 201408260368AM | ND |
| 2014-08-26 | 201408270820AM | ND |
| 2014-08-26 | 201408270836AM | ND |
| 2014-08-26 | 201408270840AM | ND |
| 2014-11-18 | 201411190581AM | ND |