Bromochloromethane
West Sound Utility District #1
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 |
|---|---|---|---|---|
| 2014 | ND | 9 | 0 | ND |
| 2015 | ND | 9 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 9 | 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 |
|---|---|---|
| 2014-09-22 | 201409240418AM | ND |
| 2014-09-22 | 201409240412AM | ND |
| 2014-09-22 | 201409240416AM | ND |
| 2014-09-22 | 201409240534AM | ND |
| 2014-09-23 | 201409250515AM | ND |
| 2014-09-23 | 201409250596AM | ND |
| 2014-09-23 | 201409250638AM | ND |
| 2014-09-23 | 201409250525AM | ND |
| 2014-09-24 | 201409260328AM | ND |
| 2015-03-16 | 201503180807AM | ND |
| 2015-03-16 | 201503180707AM | ND |
| 2015-03-16 | 201503180809AM | ND |
| 2015-03-16 | 201503180471AM | ND |
| 2015-03-17 | 201503190566AM | ND |
| 2015-03-17 | 201503190512AM | ND |
| 2015-03-17 | 201503190483AM | ND |
| 2015-03-18 | 201503200243AM | ND |
| 2015-03-18 | 201503200254AM | ND |
| 2018-02-23 | ND | |
| 2018-07-06 | ND | |
| 2018-10-09 | ND | |
| 2023-05-17 | 4468290 | ND |
| 2023-05-17 | 4468290 | ND |
| 2023-05-17 | 4468282 | ND |
| 2023-05-17 | 4468292 | ND |
| 2023-05-17 | 4468291 | ND |
| 2023-05-19 | 4468273 | ND |
| 2023-05-19 | 4468272 | ND |
| 2023-05-19 | 4468272 | ND |
| 2023-05-19 | 4468272 | ND |