Cobalt
Forest Park
NOTE: Forest Park purchases water from City of Chicago which is required to test for cobalt. Sample information shown below was taken by City of Chicago.
Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 8 | 0 | ND |
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 70 ppb
The EWG Health Guideline of 70 ppb for cobalt was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.
ppb = parts per billion
All test results
NOTE: Forest Park purchases water from City of Chicago which is required to test for cobalt. Sample information shown below was taken by City of Chicago.
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-28 | 3015708 | ND |
| 2014-04-28 | 3015718 | ND |
| 2014-04-28 | 3015757 | ND |
| 2014-04-28 | 3015741 | ND |
| 2014-08-13 | 3081746 | ND |
| 2014-08-13 | 3081749 | ND |
| 2014-08-13 | 3081734 | ND |
| 2014-08-13 | 3081726 | ND |
| 2014-10-07 | 3118992 | ND |
| 2014-10-07 | 3118977 | ND |
| 2014-10-07 | 3118973 | ND |
| 2014-10-07 | 3118988 | ND |
| 2015-01-13 | 3169381 | ND |
| 2015-01-13 | 3169534 | ND |
| 2015-01-13 | 3169538 | ND |
| 2015-01-13 | 3169401 | ND |