Bromochloromethane
Ruth Water District
NOTE: Ruth Water District purchases water from Ely Municipal Water Department which is required to test for bromochloromethane. Sample information shown below was taken by Ely Municipal Water Department.
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 | 4 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 5 | 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: Ruth Water District purchases water from Ely Municipal Water Department which is required to test for bromochloromethane. Sample information shown below was taken by Ely Municipal Water Department.
| Date | Lab ID | Result |
|---|---|---|
| 2013-02-27 | 100397Q | ND |
| 2013-10-23 | 101945P | ND |
| 2013-10-23 | 101946P | ND |
| 2014-03-12 | 102900R | ND |
| 2014-03-12 | 102901R | ND |
| 2014-03-12 | 102903R | ND |
| 2018-11-08 | 18110223-007 | ND |
| 2019-11-14 | 19110404-002 | ND |
| 2019-11-14 | 19110404-003 | ND |
| 2019-11-14 | 19110404-005 | ND |
| 2019-11-21 | 19110631-001 | ND |
| 2022-05-12 | 22050451-001 | ND |
| 2022-05-12 | 22050451-002 | ND |
| 2022-07-07 | 22070169-002 | ND |
| 2022-07-07 | 22070169-003 | ND |
| 2022-07-07 | 22070169-004 | ND |