Bromochloromethane
City of Vancouver
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 | ND | 18 | 0 | ND |
| 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 | 10 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2013-05-28 | 201305290255AM | ND |
| 2013-05-28 | 201305290241AM | ND |
| 2013-05-28 | 201305290221AM | ND |
| 2013-05-28 | 201305290217AM | ND |
| 2013-05-28 | 201305290260AM | ND |
| 2013-05-28 | 201305290223AM | ND |
| 2013-05-28 | 201305290239AM | ND |
| 2013-05-28 | 201305290226AM | ND |
| 2013-06-17 | 201306180198AM | ND |
| 2013-11-19 | 201311200327AM | ND |
| 2013-11-19 | 201311200343AM | ND |
| 2013-11-19 | 201311200369AM | ND |
| 2013-11-19 | 201311200323AM | ND |
| 2013-11-19 | 201311200341AM | ND |
| 2013-11-19 | 201311200325AM | ND |
| 2013-11-19 | 201311200527AM | ND |
| 2013-11-19 | 201311200397AM | ND |
| 2013-11-19 | 201311200401AM | ND |
| 2019-05-30 | ND | |
| 2019-05-30 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2021-03-30 | 4096453 | ND |
| 2021-03-30 | 4096452 | ND |
| 2021-03-30 | 4096450 | ND |
| 2021-03-30 | 4096451 | ND |
| 2021-05-18 | 4118752 | ND |
| 2021-05-18 | 4118762 | ND |
| 2022-03-24 | 4266311 | ND |
| 2022-03-24 | 4266312 | ND |