Bromochloromethane
San Francisco City Water System
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.
13
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 8 | 0 | ND |
| 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 | 5 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2013-01-31 | 201302010153AM | ND |
| 2013-02-20 | 201302220337AM | ND |
| 2013-04-29 | 201304300195AM | ND |
| 2013-06-06 | 201306070190AM | ND |
| 2013-07-30 | 201307310290AM | ND |
| 2013-08-12 | 201308130156AM | ND |
| 2013-10-07 | 201310080350AM | ND |
| 2013-10-10 | 201310110406AM | ND |
| 2018-03-08 | 9590-006-0925 | ND |
| 2018-04-17 | 9590-007-1055 | ND |
| 2018-06-12 | 9590-004-1058 | ND |
| 2018-06-12 | 9590-008-0930 | ND |
| 2018-07-17 | 9590-007-0519 | ND |