Cobalt
City of Denham Springs Water System
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 | 8 | 0 | ND |
| 2014 | 0.188 ppb | 8 | 1 | ND - 1.50 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 |
|---|---|---|
| 2013-09-12 | 2896009 | ND |
| 2013-09-12 | 2896087 | ND |
| 2013-09-12 | 2896034 | ND |
| 2013-09-12 | 2896029 | ND |
| 2013-09-12 | 2896069 | ND |
| 2013-09-12 | 2896021 | ND |
| 2013-09-12 | 2896073 | ND |
| 2013-09-12 | 2896052 | ND |
| 2014-03-27 | 2999340 | ND |
| 2014-03-27 | 2999270 | ND |
| 2014-05-08 | 3023038 | ND |
| 2014-05-08 | 3023034 | ND |
| 2014-05-08 | 3023036 | ND |
| 2014-05-08 | 3023028 | 1.50 ppb |
| 2014-05-08 | 3023032 | ND |
| 2014-05-08 | 3023030 | ND |