Manganese
The Oaks Water Supply Corporation
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.
8
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 | ND | 3 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | 0.568 ppb | 46 | 10 | ND - 8.30 ppb |
| 2021 | 0.467 ppb | 3 | 1 | ND - 1.40 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | 0.643 ppb | 7 | 2 | ND - 3.30 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 |
|---|---|---|
| 2018-07-31 | AE35018 | ND |
| 2018-07-31 | AE35019 | ND |
| 2018-07-31 | AE35020 | ND |
| 2019-04-25 | AE63671 | ND |
| 2021-02-24 | AF44105 | ND |
| 2021-02-24 | AF44107 | ND |
| 2021-02-24 | AF44108 | 1.40 ppb |
| 2022-08-01 | AG06993 | ND |