Aluminum
Humboldt, City of
Aluminum is a metal released from metal refineries and mining operations. Too much aluminum exposure can impair children's brain development.
6
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 15.0 ppb | 1 | 1 | 15.0 ppb |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 17.0 ppb | 1 | 1 | 17.0 ppb |
| 2023 | 18.0 ppb | 1 | 1 | 18.0 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 600 ppb
The EWG Health Guideline of 600 ppb for aluminum 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 brain and nervous system.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-16 | 938541 | 15.0 ppb |
| 2019-04-08 | 1139841 | ND |
| 2020-04-13 | 1356570 | ND |
| 2021-04-05 | 1810805 | ND |
| 2022-04-04 | 2230076 | 17.0 ppb |
| 2023-04-03 | 2474485 | 18.0 ppb |