Beryllium
Aquarion Water Company of Connecticut - Valley System
NOTE: Aquarion Water Company of Connecticut - Valley System purchases water from Regional Water Authority which is required to test for beryllium. Sample information shown below was taken by Regional Water Authority.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 10 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 9 | 0 | ND |
| 2021 | ND | 11 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 10 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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
NOTE: Aquarion Water Company of Connecticut - Valley System purchases water from Regional Water Authority which is required to test for beryllium. Sample information shown below was taken by Regional Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-12 | IOC1 200489766 | ND |
| 2018-03-14 | IOC1 200489867 | ND |
| 2018-03-14 | IOC1 200489870 | ND |
| 2018-03-14 | IOC1 200489868 | ND |
| 2018-03-14 | IOC1 200489884 | ND |
| 2018-03-14 | IOC1 200489885 | ND |
| 2018-03-14 | IOC1 200489871 | ND |
| 2018-03-14 | IOC1 200489913 | ND |
| 2018-03-14 | IOC1 200489914 | ND |
| 2018-11-29 | IOC1 200514112 | ND |
| 2019-03-18 | IOC1 200524895 | ND |
| 2019-03-19 | IOC1 200525061 | ND |
| 2019-03-19 | IOC1 200525098 | ND |
| 2019-03-19 | IOC1 200525097 | ND |
| 2019-03-19 | IOC1 200525078 | ND |
| 2019-03-19 | IOC1 200525059 | ND |
| 2019-03-19 | IOC1 200525057 | ND |
| 2019-03-19 | IOC1 200525058 | ND |
| 2019-03-19 | IOC1 200525060 | ND |
| 2019-03-19 | IOC1 200525077 | ND |
| 2019-05-08 | IOC1 200531297 | ND |
| 2020-02-10 | IOC1 200565460 | ND |
| 2020-02-11 | IOC1 200565593 | ND |
| 2020-02-11 | IOC1 200565628 | ND |
| 2020-02-11 | IOC1 200565628A | ND |
| 2020-02-11 | IOC1 200565594 | ND |
| 2020-02-11 | IOC1 200565625 | ND |
| 2020-02-11 | IOC1 200565626 | ND |
| 2020-02-11 | IOC1 200565627 | ND |
| 2020-02-11 | IOC1 200565624 | ND |
| 2021-02-09 | IOC1 200605933 | ND |
| 2021-02-09 | IOC1 200606111 | ND |
| 2021-02-09 | IOC1 200605959 | ND |
| 2021-02-09 | IOC1 200606116 | ND |
| 2021-02-09 | IOC1 200605888 | ND |
| 2021-02-09 | IOC1 200605956 | ND |
| 2021-02-09 | IOC1 200606109 | ND |
| 2021-02-09 | IOC1 200606110 | ND |
| 2021-02-09 | IOC1 200606114 | ND |
| 2021-02-09 | IOC1 200605886 | ND |
| 2021-02-17 | IOC1 200606909 | ND |
| 2022-02-15 | E300145550 300145554 | ND |
| 2022-02-15 | E300145718 300145722 | ND |
| 2022-02-15 | E300145699 300145703 | ND |
| 2022-02-15 | E300145575 300145579 | ND |
| 2022-02-15 | E300145667 300145671 | ND |
| 2022-02-15 | E300145647 300145651 | ND |
| 2022-02-15 | E300146276 300146280 | ND |
| 2022-02-15 | E300145514 300145518 | ND |
| 2022-02-15 | E300145523 300145527 | ND |
| 2022-02-15 | E300145532 300145536 | ND |
| 2022-02-15 | E300145541 300145545 | ND |
| 2023-02-06 | E300305466 300305496 | ND |
| 2023-02-07 | E300305797 300305801 | ND |
| 2023-02-14 | E300309461 300309465 | ND |
| 2023-02-14 | E300309762 300309766 | ND |
| 2023-02-14 | E300309452 300309456 | ND |
| 2023-02-14 | E300309097 300309101 | ND |
| 2023-02-14 | E300309470 300309474 | ND |
| 2023-02-14 | E300309495 300309499 | ND |
| 2023-02-14 | E300309531 300309535 | ND |
| 2023-02-14 | E300309550 300309554 | ND |