Manganese
Windfern Forest Utility District
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.
4
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 | 8.64 ppb | 17 | 14 | ND - 51.5 ppb |
| 2019 | 6.55 ppb | 2 | 2 | 6.00 ppb - 7.10 ppb |
| 2020 | 7.41 ppb | 15 | 12 | ND - 66.5 ppb |
| 2021 | 5.23 ppb | 146 | 39 | ND - 69.0 ppb |
| 2022 | 8.65 ppb | 2 | 2 | 8.40 ppb - 8.90 ppb |
| 2023 | 8.60 ppb | 115 | 45 | ND - 65.0 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 |
|---|---|---|
| 2019-08-22 | AE80140 | 7.10 ppb |
| 2019-08-22 | AE80141 | 6.00 ppb |
| 2022-02-16 | AF85175 | 8.40 ppb |
| 2022-02-16 | AF85176 | 8.90 ppb |