Bromochloromethane
City of Spokane
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 |
|---|---|---|---|---|
| 2015 | ND | 10 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 10 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 3 | 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 |
|---|---|---|
| 2015-03-23 | 150324054-002 | ND |
| 2015-03-23 | 150324054-003 | ND |
| 2015-03-23 | 150324054-001 | ND |
| 2015-03-23 | 150324054-005 | ND |
| 2015-03-23 | 150324054-004 | ND |
| 2015-09-28 | 150930003-008 | ND |
| 2015-09-28 | 150930003-006 | ND |
| 2015-09-28 | 150930003-007 | ND |
| 2015-09-28 | 150930003-009 | ND |
| 2015-09-28 | 150930003-010 | ND |
| 2018-01-30 | ND | |
| 2018-01-30 | ND | |
| 2018-07-17 | ND | |
| 2019-07-23 | ND | |
| 2019-07-23 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2021-01-26 | 4066970 | ND |
| 2021-01-26 | 4066969 | ND |
| 2021-07-27 | 4195356 | ND |
| 2022-07-26 | 4319393 | ND |
| 2022-07-26 | 4319391 | ND |
| 2023-01-24 | 4399432 | ND |
| 2023-07-25 | 4507772 | ND |