Bromochloromethane
Ventura County Waterworks District No. 19 - Somis
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 |
|---|---|---|---|---|
| 2015 | ND | 8 | 0 | ND |
| 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 | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2015-02-10 | 112167P | ND |
| 2015-02-10 | 112166P | ND |
| 2015-02-10 | 112164P | ND |
| 2015-05-11 | 113210Q | ND |
| 2015-08-11 | 114766P | ND |
| 2015-08-11 | 114765P | ND |
| 2015-08-11 | 114764P | ND |
| 2015-09-14 | 115679R | ND |
| 2018-08-01 | CA5610015_002_002-201808011404 | ND |
| 2018-08-01 | CA5610015_007_007-201808011337 | ND |
| 2018-08-14 | CA5610015_001_001-201808141147 | ND |
| 2019-08-07 | CA5610015_001_001-201908071409 | ND |
| 2019-08-07 | CA5610015_002_002-201908071345 | ND |
| 2019-08-07 | CA5610015_007_007-201908071317 | ND |
| 2020-08-03 | CA5610015_007_007-202008031556 | ND |
| 2020-08-04 | CA5610015_001_001-202008041455 | ND |
| 2020-08-04 | CA5610015_002_002-202008041411 | ND |
| 2021-08-04 | CA5610015_002_002-202108040830 | ND |
| 2021-08-04 | CA5610015_001_001-202108041340 | ND |
| 2021-08-04 | CA5610015_007_007-202108040940 | ND |
| 2022-08-16 | CA5610015_002_002-202208160933 | ND |
| 2022-08-17 | CA5610015_007_007-202208170841 | ND |
| 2022-08-22 | CA5610015_001_001-202208221052 | ND |
| 2023-08-08 | CA5610015_001_001-202308081445 | ND |
| 2023-08-08 | CA5610015_002_002-202308081515 | ND |
| 2023-08-09 | CA5610015_007_007-202308090930 | ND |