Aluminum
City of Richwood
Aluminum is a metal released from metal refineries and mining operations. Too much aluminum exposure can impair children's brain development.
7
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 | 41.9 ppb | 1 | 1 | 41.9 ppb |
| 2019 | 72.5 ppb | 2 | 1 | ND - 145.0 ppb |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 43.0 ppb | 1 | 1 | 43.0 ppb |
| 2022 | ND | 2 | 0 | ND |
| 2023 | 20.1 ppb | 1 | 1 | 20.1 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 |
|---|---|---|
| 2018-02-07 | AE12929 | 41.9 ppb |
| 2019-01-09 | AE49178 | ND |
| 2019-01-09 | AE49179 | 145.0 ppb |
| 2020-10-15 | AF30767 | ND |
| 2021-04-08 | AF49473 | 43.0 ppb |
| 2022-03-28 | AF90700 | ND |
| 2022-03-28 | AF90701 | ND |