Cobalt
The Orchard Development
Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.
8
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 |
|---|---|---|---|---|
| 2014 | 3.90 ppb | 8 | 4 | ND - 24.0 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-06-10 | 107578P | ND |
| 2014-06-10 | 307664P | ND |
| 2014-06-10 | 107577P | 1.90 ppb |
| 2014-06-10 | 107579P | 3.50 ppb |
| 2014-12-09 | 110695P | ND |
| 2014-12-09 | 310780P | ND |
| 2014-12-09 | 110696P | 1.80 ppb |
| 2014-12-09 | 110694P | 24.0 ppb |