Manganese
Mondamin Water Supply
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.
6
Samples
0
Samples exceeding legal limit (MCL)
2
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 | N/A | 0 | 0 | N/A |
| 2020 | 25.5 ppb | 1 | 1 | 25.5 ppb |
| 2021 | 11.6 ppb | 1 | 1 | 11.6 ppb |
| 2022 | 13.7 ppb | 1 | 1 | 13.7 ppb |
| 2023 | 288.7 ppb | 3 | 3 | 6.20 ppb - 540.0 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 |
|---|---|---|
| 2020-10-13 | 1J01283-02 | 25.5 ppb |
| 2021-11-10 | 1EK1139-02 | 11.6 ppb |
| 2022-12-20 | 1FL1907-02 | 13.7 ppb |
| 2023-08-08 | OE2318770 | 540.0 ppb |
| 2023-08-30 | OE2329659 | 320.0 ppb |
| 2023-11-01 | 1GK0177-02 | 6.20 ppb |