Manganese
Liberty Correctional Institution
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)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 7.07 ppb | 3 | 3 | 5.20 ppb - 8.30 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 6.67 ppb | 3 | 3 | 3.00 ppb - 9.20 ppb |
| 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: 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 | Result |
|---|---|
| 2018-05-22 | 8.30 ppb |
| 2018-05-22 | 5.20 ppb |
| 2018-05-22 | 7.70 ppb |
| 2021-09-21 | 3.00 ppb |
| 2021-09-21 | 9.20 ppb |
| 2021-09-21 | 7.80 ppb |