Cobalt
Nocona Hills Water Supply Corporation
Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.
10
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 |
|---|---|---|---|---|
| 2015 | ND | 10 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-11 | 112596P | ND |
| 2015-03-11 | 112597P | ND |
| 2015-03-11 | 112598P | ND |
| 2015-03-11 | 112599P | ND |
| 2015-03-11 | 312682P | ND |
| 2015-09-15 | 115453P | ND |
| 2015-09-15 | 115454P | ND |
| 2015-09-15 | 115455P | ND |
| 2015-09-15 | 115456P | ND |
| 2015-09-15 | 315538P | ND |