Beryllium
Danbury Water Department
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 | ND | 2 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 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 |
---|---|---|
2014-06-24 | E406M77-4IOC1 | ND |
2014-06-24 | E406M77-2IOC1 | ND |
2015-05-05 | E505239-3IOC1 | ND |
2015-05-05 | E505239-4IOC1 | ND |
2016-08-09 | 187079CH | ND |
2016-08-09 | 187077CH | ND |
2016-08-09 | 187076GE | ND |
2016-08-09 | 187078GE | ND |
2016-12-14 | 192746GE | ND |
2016-12-14 | 192751GE | ND |
2017-05-18 | 198891GE | ND |
2017-05-18 | 198890GE | ND |
2017-06-15 | 200358GE | ND |
2017-06-15 | 200361GE | ND |
2018-04-12 | 212687GE | ND |
2018-04-12 | 212690GE | ND |
2018-10-12 | IOC1 200508940 | ND |
2018-10-12 | IOC1 200508939 | ND |
2019-04-11 | IOC1 200528182 | ND |
2019-04-11 | IOC1 200528181 | ND |