Bromochloromethane
Mccoy Water Supply Corporation
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 7 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 6 | 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 |
|---|---|---|
| 2018-02-05 | AE12259 | ND |
| 2018-02-05 | AE12261 | ND |
| 2018-02-05 | AE12257 | ND |
| 2019-06-05 | AE69256 | ND |
| 2019-06-05 | AE69258 | ND |
| 2019-11-18 | AE89581 | ND |
| 2020-03-26 | AF04716 | ND |
| 2020-03-26 | AF04726 | ND |
| 2020-03-26 | AF04728 | ND |
| 2020-06-10 | AF14868 | ND |
| 2020-06-10 | AF14870 | ND |
| 2020-07-07 | AF18407 | ND |
| 2020-07-07 | AF18403 | ND |
| 2021-06-28 | AF59681 | ND |
| 2021-09-20 | AF70457 | ND |
| 2021-09-20 | AF70459 | ND |
| 2022-07-05 | AG03259 | ND |
| 2022-07-05 | AG03261 | ND |
| 2022-07-05 | AG03263 | ND |
| 2023-05-03 | AG39139 | ND |
| 2023-05-03 | AG39145 | ND |
| 2023-05-03 | AG39151 | ND |
| 2023-05-03 | AG39153 | ND |
| 2023-09-15 | AG56654 | ND |
| 2023-10-02 | AG58143 | ND |