Beryllium
North Ledge
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 | 2.25 ppb | 4 | 4 | 2.00 ppb - 3.00 ppb |
2015 | 1.50 ppb | 4 | 3 | ND - 2.00 ppb |
2016 | 2.00 ppb | 4 | 4 | 2.00 ppb |
2017 | 1.50 ppb | 4 | 3 | ND - 2.00 ppb |
2018 | 2.00 ppb | 4 | 4 | 2.00 ppb |
2019 | 2.00 ppb | 1 | 1 | 2.00 ppb |
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 |
---|---|---|
2014-02-10 | 9502-158 | 2.00 ppb |
2014-05-07 | 9505-238 | 2.00 ppb |
2014-07-16 | 214070498 | 2.00 ppb |
2014-12-04 | 214120146 | 3.00 ppb |
2015-01-28 | 215010468 | 2.00 ppb |
2015-04-07 | 215040205.01 | ND |
2015-08-04 | 215080159.01 | 2.00 ppb |
2015-12-03 | 215120113.01 | 2.00 ppb |
2016-02-18 | 216020435 | 2.00 ppb |
2016-05-23 | 216050936 | 2.00 ppb |
2016-08-23 | 216081004 | 2.00 ppb |
2016-11-28 | 216110835 | 2.00 ppb |
2017-01-25 | 217010708 | 2.00 ppb |
2017-04-18 | 217040542 | 2.00 ppb |
2017-07-19 | 217070715 | 2.00 ppb |
2017-11-27 | 217110815 | ND |
2018-01-24 | 218010550.01 | 2.00 ppb |
2018-05-24 | 218050978.01 | 2.00 ppb |
2018-08-14 | 218080624.01 | 2.00 ppb |
2018-10-24 | 218100948.01 | 2.00 ppb |
2019-01-22 | 219010656.01 | 2.00 ppb |