Bromochloromethane
Quincy Water Department City Of
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 | N/A | 0 | 0 | N/A |
| 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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 7 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2019-10-02 | ND | |
| 2021-06-16 | 4132530 | ND |
| 2021-06-16 | 4131878 | ND |
| 2022-03-04 | 4258466 | ND |
| 2022-03-22 | 4258506 | ND |
| 2022-08-16 | 4338187 | ND |
| 2022-08-16 | 4338185 | ND |
| 2022-09-13 | 4344891 | ND |
| 2022-10-06 | 4356345 | ND |
| 2022-10-06 | 4356344 | ND |
| 2023-03-09 | 4427806 | ND |
| 2023-09-26 | 4526082 | ND |
| 2023-10-03 | 4526155 | ND |