Bromochloromethane
City of Auburn
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 | 14 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-03-11 | A4B1976-01A | ND |
| 2014-03-11 | A4B1976-12A | ND |
| 2014-03-13 | A4B1976-08A | ND |
| 2014-03-18 | A4C0166-05A | ND |
| 2014-03-18 | A4C0166-01A | ND |
| 2014-04-01 | A4C1981-01A | ND |
| 2014-06-11 | A4C2313-01A | ND |
| 2014-09-09 | A4I0142-01A | ND |
| 2014-09-16 | A4I0632-06A | ND |
| 2014-09-16 | A4I0632-01A | ND |
| 2014-09-23 | A4I1297-06A | ND |
| 2014-09-23 | A4I1297-01A | ND |
| 2014-09-30 | A4I2084-01A | ND |
| 2014-12-09 | A4L0057-01A | ND |
| 2018-03-20 | ND | |
| 2018-07-11 | ND | |
| 2018-07-11 | ND | |
| 2018-07-11 | ND | |
| 2019-08-01 | ND | |
| 2019-08-01 | ND | |
| 2022-07-08 | 4310938 | ND |
| 2022-07-08 | 4310937 | ND |