Cobalt
City of Forest Grove
Cobalt is a metal found throughout the environment; people may be exposed to cobalt in air, food and drinking water.
16
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 |
|---|---|---|---|---|
| 2013 | ND | 12 | 0 | ND |
| 2014 | ND | 4 | 0 | ND |
| 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 |
|---|---|---|
| 2013-04-17 | 2812104 | ND |
| 2013-04-17 | 2812100 | ND |
| 2013-04-17 | 2812130 | ND |
| 2013-04-17 | 2812132 | ND |
| 2013-07-17 | 2863327 | ND |
| 2013-07-17 | 2863370 | ND |
| 2013-07-17 | 2863361 | ND |
| 2013-07-17 | 2863353 | ND |
| 2013-10-16 | WA97-SE3-13-19894-45180 | ND |
| 2013-10-16 | WA97-SE3-13-19894-45179 | ND |
| 2013-10-16 | WA97-SE3-13-19894-45181 | ND |
| 2013-10-16 | WA97-SE3-13-19894-45182 | ND |
| 2014-01-22 | WA97-SE4-14-01308-3422 | ND |
| 2014-01-22 | WA97-SE4-14-01308-3421 | ND |
| 2014-01-22 | WA97-SE4-14-01308-3423 | ND |
| 2014-01-22 | WA97-SE4-14-01308-3424 | ND |