Cobalt
Crystal
NOTE: Crystal purchases water from Minneapolis which is required to test for cobalt. Sample information shown below was taken by Minneapolis.
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 |
|---|---|---|---|---|
| 2014 | ND | 7 | 0 | ND |
| 2015 | ND | 6 | 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: Crystal purchases water from Minneapolis which is required to test for cobalt. Sample information shown below was taken by Minneapolis.
| Date | Lab ID | Result |
|---|---|---|
| 2015-02-03 | 2053068001 | ND |
| 2015-02-03 | 2053068003 | ND |
| 2015-05-05 | 2069020001 | ND |
| 2015-05-05 | 2069020003 | ND |
| 2015-08-03 | 2086831001 | ND |
| 2015-08-03 | 2086831003 | ND |