Manganese
Cooks Point Water Supply Corporation
Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | 9.00 ppb | 1 | 1 | 9.00 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 12.6 ppb | 3 | 3 | 11.7 ppb - 13.0 ppb |
| 2023 | 10.00 ppb | 4 | 4 | 10.00 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 100 ppb
The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-08-06 | AE77156 | 9.00 ppb |
| 2022-06-27 | F021306-01 | 13.0 ppb |
| 2022-06-27 | F021306-02 | 13.0 ppb |
| 2022-07-19 | AG05229 | 11.7 ppb |
| 2023-09-22 | 23090639-01 | 10.00 ppb |
| 2023-09-22 | 23090639-02 | 10.00 ppb |
| 2023-10-03 | 23100050-01 | 10.00 ppb |
| 2023-10-03 | 23100050-02 | 10.00 ppb |