Bromochloromethane
Redhill Water Association
NOTE: Redhill Water Association purchases water from Alma Waterworks which is required to test for bromochloromethane. Sample information shown below was taken by Alma Waterworks.
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 5 | 0 | ND |
| 2022 | ND | 4 | 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
NOTE: Redhill Water Association purchases water from Alma Waterworks which is required to test for bromochloromethane. Sample information shown below was taken by Alma Waterworks.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-01 | 18004012709 | ND |
| 2019-02-05 | 19038001501 | ND |
| 2020-01-07 | 20009017401 | ND |
| 2020-04-13 | 20107011508 | ND |
| 2020-07-08 | 20191012409 | ND |
| 2020-11-02 | 20310000709 | ND |
| 2021-01-19 | 21021001907 | ND |
| 2021-04-06 | 21098014201 | ND |
| 2022-04-04 | O196531-VOC-1 | ND |