Manganese
Jefferson County Water Control and Improvement District 10
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 | 9.70 ppb | 1 | 1 | 9.70 ppb |
| 2019 | 45.8 ppb | 1 | 1 | 45.8 ppb |
| 2020 | 78.4 ppb | 1 | 1 | 78.4 ppb |
| 2021 | 40.9 ppb | 1 | 1 | 40.9 ppb |
| 2022 | 21.2 ppb | 1 | 1 | 21.2 ppb |
| 2023 | 3.70 ppb | 1 | 1 | 3.70 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 |
|---|---|---|
| 2018-01-31 | AE11463 | 9.70 ppb |
| 2019-05-29 | AE68335 | 45.8 ppb |
| 2020-02-13 | AE98338 | 78.4 ppb |
| 2021-02-04 | AF42612 | 40.9 ppb |
| 2022-01-12 | AF79867 | 21.2 ppb |
| 2023-01-09 | AG23342 | 3.70 ppb |