Beryllium
Metropolitan District Commission
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 | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-18 | AE01630GE | ND |
| 2018-07-18 | AE01632GE | ND |
| 2018-07-18 | AE01631GE | ND |
| 2019-12-03 | CE70740 | ND |
| 2019-12-03 | CE70739 | ND |
| 2019-12-03 | CE70741 | ND |
| 2020-12-08 | IOC1 200600637 | ND |
| 2020-12-08 | IOC1 200600611 | ND |
| 2020-12-09 | IOC1 200600603 | ND |
| 2021-11-23 | E300107450 300107454 | ND |
| 2021-11-23 | E300107451 300107460 | ND |
| 2021-11-29 | E300109635 300109640 | ND |
| 2022-12-15 | E300287053 300287057 | ND |
| 2022-12-15 | E300287072 300287076 | ND |
| 2022-12-15 | E300287100 300287104 | ND |
| 2023-12-05 | E300456248 300456251 | ND |
| 2023-12-06 | E300456222 300456225 | ND |
| 2023-12-06 | E300456228 300456231 | ND |