Bromochloromethane
City of Nampa
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 | 0.0123 ppb | 26 | 3 | ND - 0.157 ppb |
| 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 | 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 | 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 |
|---|---|---|
| 2014-01-29 | 140131024-010 | ND |
| 2014-01-29 | 140131024-005 | ND |
| 2014-01-29 | 140131024-011 | ND |
| 2014-01-29 | 140131024-006 | ND |
| 2014-01-29 | 140131024-016 | ND |
| 2014-01-30 | 140131024-015 | 0.157 ppb |
| 2014-01-30 | 140131024-008 | ND |
| 2014-01-30 | 140131024-007 | ND |
| 2014-01-30 | 140131024-009 | ND |
| 2014-01-30 | 140131024-013 | ND |
| 2014-01-30 | 140131024-014 | 0.0607 ppb |
| 2014-01-30 | 140131024-012 | ND |
| 2014-01-30 | 140131024-017 | ND |
| 2014-07-21 | 140723034-006 | ND |
| 2014-07-21 | 140723034-008 | ND |
| 2014-07-21 | 140723034-007 | ND |
| 2014-07-21 | 140723034-013 | ND |
| 2014-07-21 | 140723034-011 | ND |
| 2014-07-21 | 140723034-009 | ND |
| 2014-07-21 | 140723034-010 | ND |
| 2014-07-21 | 140723034-005 | ND |
| 2014-07-21 | 140723034-015 | ND |
| 2014-07-21 | 140723034-012 | ND |
| 2014-07-21 | 140723034-014 | ND |
| 2014-07-21 | 140723034-017 | ND |
| 2014-07-21 | 140723034-016 | 0.102 ppb |