Cobalt
Catoosa Utility District Authority
NOTE: Catoosa Utility District Authority purchases water from Tennessee American Water which is required to test for cobalt. Sample information shown below was taken by Tennessee American Water.
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 |
|---|---|---|---|---|
| 2015 | ND | 18 | 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: Catoosa Utility District Authority purchases water from Tennessee American Water which is required to test for cobalt. Sample information shown below was taken by Tennessee American Water.
| Date | Lab ID | Result |
|---|---|---|
| 2014-12-02 | 3159904 | ND |
| 2014-12-02 | 3159732 | ND |
| 2015-03-03 | 28376701 | ND |
| 2015-03-03 | 28377001 | ND |
| 2015-06-02 | 29177801 | ND |
| 2015-06-02 | 29178101 | ND |
| 2015-09-14 | 30177601 | ND |
| 2015-09-14 | 30177901 | ND |