Beryllium
California Water Service (CWS) - King City
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | 0.000250 ppb | 4 | 1 | ND - 0.001000 ppb |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 3 | 0 | ND |
2019 | ND | 2 | 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 |
---|---|---|
2014-06-04 | 9590-015-0930 | ND |
2015-02-18 | 9590-014-1235 | ND |
2015-06-09 | 9590-008-1110 | ND |
2015-06-09 | 5701-008-1118 | 0.001000 ppb |
2015-09-10 | 9590-007-1233 | ND |
2016-03-07 | 9590-012-1150 | ND |
2016-03-08 | 9590-006-1008 | ND |
2017-06-08 | 9590-015-1216 | ND |
2017-11-20 | 9590-015-1130 | ND |
2018-02-08 | 9590-014-1125 | ND |
2018-07-17 | 9590-008-1113 | ND |
2018-09-17 | 9590-007-1300 | ND |
2019-03-20 | 9590-012-1145 | ND |
2019-04-17 | 9590-006-1201 | ND |