Bromochloromethane
Northwest Harris County Municipal Utility District 19
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 | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 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 |
|---|---|---|
| 2018-05-17 | AE26819 | ND |
| 2018-05-17 | AE26823 | ND |
| 2019-11-07 | AE88931 | ND |
| 2019-11-07 | AE88937 | ND |
| 2020-10-01 | AF29290 | ND |
| 2020-10-01 | AF29300 | ND |
| 2021-06-10 | AF57515 | ND |
| 2021-06-10 | AF57537 | ND |
| 2022-05-17 | AF97248 | ND |
| 2022-05-17 | AF97250 | ND |
| 2023-07-20 | AG49615 | ND |
| 2023-07-20 | AG49637 | ND |