Bromochloromethane
East Pasadena Water Company
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 | N/A | 0 | 0 | N/A |
| 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 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 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 |
|---|---|---|
| 2018-04-11 | CA1910020_012_012-201804111035 | ND |
| 2018-07-12 | CA1910020_005_005-201807121035 | ND |
| 2019-04-03 | CA1910020_012_012-201904031000 | ND |
| 2019-07-29 | CA1910020_005_005-201907291225 | ND |
| 2020-04-02 | CA1910020_012_012-202004021030 | ND |
| 2020-07-09 | CA1910020_005_005-202007091040 | ND |
| 2021-04-12 | CA1910020_012_012-202104121010 | ND |
| 2021-07-13 | CA1910020_005_005-202107131115 | ND |
| 2022-04-20 | CA1910020_012_012-202204201155 | ND |
| 2022-08-09 | CA1910020_005_005-202208091125 | ND |
| 2023-05-10 | CA1910020_012_012-202305101055 | ND |
| 2023-08-16 | CA1910020_005_005-202308161040 | ND |