Bromochloromethane
Horseshoe Bend Water 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 |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 4 | 0 | ND |
| 2022 | 0.815 ppb | 2 | 1 | ND - 1.63 ppb |
| 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 |
|---|---|---|
| 2018-09-24 | Q1838017002 | ND |
| 2018-09-24 | Q1838017011 | ND |
| 2019-09-17 | Q1965845001 | ND |
| 2019-09-17 | Q1965845003 | ND |
| 2020-06-22 | Q2024986001 | ND |
| 2020-06-22 | Q2024986003 | ND |
| 2021-03-31 | Q2108169005 | ND |
| 2021-03-31 | Q2108169007 | ND |
| 2021-08-11 | Q2121433003 | ND |
| 2021-12-27 | Q2136238001 | ND |
| 2022-11-30 | Q2235894004 | 1.63 ppb |
| 2022-11-30 | Q2235894006 | ND |
| 2023-06-08 | Q2321714001 | ND |
| 2023-06-08 | Q2321714009 | ND |
| 2023-07-31 | Q2330829001 | ND |