Beryllium
San Francisco Regional Water System
Beryllium is a toxic metal that is both naturally occurring and released into the environment from industrial pollution and incineration. Beryllium can damage lungs, bones and the digestive system.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 3 | 0 | ND |
2015 | ND | 3 | 0 | ND |
2016 | ND | 3 | 0 | ND |
2017 | ND | 3 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 8 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for beryllium 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 harm to the stomach and intestines.
EPA Maximum Contaminant
Level (MCL) 4 ppb
The legal limit for beryllium, established in 1992, was based on a toxicity study in laboratory animals published in 1970. This limit does not include any additional consideration of children’s health.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-06-17 | 9553-016-0904 | ND |
2014-06-17 | 9553-001-1130 | ND |
2014-09-16 | 9553-015-1035 | ND |
2015-05-27 | 9553-001-1235 | ND |
2015-05-27 | 9553-016-0830 | ND |
2015-06-18 | 9553-015-0915 | ND |
2016-06-14 | 9553-001-1105 | ND |
2016-06-14 | 9553-015-1231 | ND |
2016-06-21 | 9553-016-1055 | ND |
2017-06-19 | 9553-015-1100 | ND |
2017-06-19 | 9553-016-0953 | ND |
2017-06-19 | 9553-001-1025 | ND |
2018-06-18 | 9553-016-1100 | ND |
2018-06-18 | 9553-001-1032 | ND |
2018-06-28 | 9553-015-0950 | ND |
2019-06-17 | 9553-015-1119 | ND |
2019-06-17 | 9553-001-1012 | ND |
2019-06-24 | 9553-034-1035 | ND |
2019-06-24 | 9553-035-1137 | ND |
2019-06-26 | 9553-031-1430 | ND |
2019-06-26 | 9553-032-0925 | ND |
2019-06-26 | 9553-033-1125 | ND |
2019-07-02 | 9553-016-0900 | ND |