Manganese
Coulterville
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 | 20.0 ppb | 1 | 1 | 20.0 ppb |
| 2019 | 24.0 ppb | 1 | 1 | 24.0 ppb |
| 2020 | 24.0 ppb | 1 | 1 | 24.0 ppb |
| 2021 | 23.0 ppb | 1 | 1 | 23.0 ppb |
| 2022 | 29.0 ppb | 1 | 1 | 29.0 ppb |
| 2023 | 32.0 ppb | 1 | 1 | 32.0 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 |
|---|---|---|
| 2018-04-03 | 8041082-01 | 20.0 ppb |
| 2019-04-23 | 9045255-01 | 24.0 ppb |
| 2020-04-13 | 0042894-01 | 24.0 ppb |
| 2021-04-11 | ED02422-01 | 23.0 ppb |
| 2022-05-01 | FE00388-01 | 29.0 ppb |
| 2023-06-06 | GF01788-01 | 32.0 ppb |