Beryllium
Golden State Water Company (GSWC) - Claremont
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 | 2 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 4 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | ND | 5 | 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 |
---|---|---|
2014-09-29 | 2706-010-1215 | ND |
2014-11-04 | 2706-030-1218 | ND |
2016-09-21 | 2706-019-0940 | ND |
2016-09-21 | 2706-039-0847 | ND |
2016-09-21 | 2706-040-1018 | ND |
2016-11-17 | 2706-006-1100 | ND |
2017-04-04 | 9590-021-1345 | ND |
2017-05-10 | 9590-002-1136 | ND |
2017-05-10 | 9590-024-1412 | ND |
2017-09-27 | 9590-010-1031 | ND |
2017-12-01 | 9590-022-1310 | ND |
2019-08-27 | 9590-006-1130 | ND |
2019-08-27 | 9590-021-1200 | ND |
2019-08-28 | 9590-019-1120 | ND |
2019-08-28 | 9590-039-1106 | ND |
2019-08-28 | 9590-040-1205 | ND |