Bromochloromethane
Travis County Municipal Utility District 10
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 0.650 ppb | 2 | 1 | ND - 1.30 ppb |
| 2023 | 0.443 ppb | 3 | 1 | ND - 1.33 ppb |
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 |
|---|---|---|
| 2018-08-31 | AE39087 | ND |
| 2019-08-14 | AE78610 | ND |
| 2020-08-13 | AF23492 | ND |
| 2021-07-27 | AF63446 | ND |
| 2022-09-15 | AG13246 | 1.30 ppb |
| 2022-12-05 | AG20688 | ND |
| 2023-03-02 | AG31399 | ND |
| 2023-05-25 | Q2320182001 | 1.33 ppb |
| 2023-09-14 | AG56284 | ND |