Bromochloromethane
City of Portland
NOTE: City of Portland purchases water from San Patricio Municipal Water District which is required to test for bromochloromethane. Sample information shown below was taken by San Patricio Municipal Water District.
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 | ND | 4 | 0 | ND |
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
NOTE: City of Portland purchases water from San Patricio Municipal Water District which is required to test for bromochloromethane. Sample information shown below was taken by San Patricio Municipal Water District.
| Date | Lab ID | Result |
|---|---|---|
| 2014-09-16 | AC67104 | ND |
| 2015-09-10 | AD06600 | ND |
| 2016-07-20 | AD45239 | ND |
| 2017-09-13 | AD96017 | ND |
| 2018-08-23 | AE38453 | ND |
| 2019-08-06 | AE77289 | ND |