Manganese
Franklin County Rural Water District 4
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.
2
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 | 0.660 ppb | 3 | 2 | ND - 1.13 ppb |
| 2019 | 0.475 ppb | 3 | 2 | ND - 0.879 ppb |
| 2020 | 120.0 ppb | 1 | 1 | 120.0 ppb |
| 2021 | 13.0 ppb | 2 | 1 | ND - 26.0 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | 130.0 ppb | 1 | 1 | 130.0 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 |
|---|---|---|
| 2020-03-17 | 1342216 | 120.0 ppb |
| 2023-03-06 | 2461424 | 130.0 ppb |