Bromochloromethane
Westwood Beach
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 | 3 | 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 | 7 | 0 | ND |
| 2022 | ND | 4 | 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 |
|---|---|---|
| 2015-06-15 | 113866P | ND |
| 2015-06-15 | 113865P | ND |
| 2015-06-15 | 113864P | ND |
| 2018-10-10 | Q1840455006 | ND |
| 2018-10-10 | Q1840455005 | ND |
| 2018-10-10 | Q1840455012 | ND |
| 2019-06-13 | Q1935800012 | ND |
| 2019-06-13 | Q1935800008 | ND |
| 2019-06-13 | Q1935800010 | ND |
| 2020-05-14 | Q2019532011 | ND |
| 2020-05-14 | Q2019532007 | ND |
| 2020-05-14 | Q2019532009 | ND |
| 2021-05-13 | Q2112500001 | ND |
| 2021-05-13 | Q2112500012 | ND |
| 2021-05-13 | Q2112500010 | ND |
| 2021-07-20 | Q2118896003 | ND |
| 2021-07-20 | Q2118896001 | ND |
| 2021-12-15 | Q2135518001 | ND |
| 2021-12-15 | Q2135518003 | ND |
| 2022-07-26 | Q2221164001 | ND |
| 2022-07-26 | Q2221164003 | ND |
| 2022-07-26 | Q2221164005 | ND |
| 2022-12-05 | Q2236047001 | ND |
| 2023-02-28 | Q2307933002 | ND |
| 2023-10-02 | Q2342089004 | ND |
| 2023-10-02 | Q2342089006 | ND |