Aluminum
Contra Costa Water District
Aluminum is a metal released from metal refineries and mining operations. Too much aluminum exposure can impair children's brain development.
9
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | 43.5 ppb | 2 | 1 | ND - 87.0 ppb |
| 2018 | 170.0 ppb | 1 | 1 | 170.0 ppb |
| 2019 | 28.0 ppb | 2 | 1 | ND - 56.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-07-07 | 9590-003-1455 | ND |
| 2014-07-21 | 9590-019-1330 | ND |
| 2015-07-06 | 9590-003-0815 | ND |
| 2016-07-11 | 9590-003-1350 | ND |
| 2017-07-10 | 9590-003-1450 | 87.0 ppb |
| 2017-12-19 | 9590-003-1330 | ND |
| 2018-07-16 | 1644-003-1245 | 170.0 ppb |
| 2019-07-08 | 1644-003-1206 | 56.0 ppb |
| 2019-07-08 | 1644-804-1050 | ND |