Bromochloromethane
Hanson Water Department
NOTE: Hanson Water Department purchases water from Brockton Water Commission which is required to test for bromochloromethane. Sample information shown below was taken by Brockton Water Commission.
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 | 6 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 7 | 0 | ND |
| 2022 | ND | 1 | 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
NOTE: Hanson Water Department purchases water from Brockton Water Commission which is required to test for bromochloromethane. Sample information shown below was taken by Brockton Water Commission.
| Date | Result |
|---|---|
| 2014-02-11 | ND |
| 2014-05-06 | ND |
| 2014-08-18 | ND |
| 2014-11-12 | ND |
| 2018-03-06 | ND |
| 2018-03-06 | ND |
| 2019-03-11 | ND |
| 2019-03-12 | ND |
| 2020-03-10 | ND |
| 2020-03-24 | ND |
| 2021-03-03 | ND |
| 2021-04-16 | ND |
| 2022-03-02 | ND |
| 2023-03-01 | ND |