Manganese
Shady Grove 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.
0
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 | 4.22 ppb | 45 | 30 | ND - 65.9 ppb |
| 2019 | 0.955 ppb | 47 | 26 | ND - 8.88 ppb |
| 2020 | 2.04 ppb | 36 | 21 | ND - 20.3 ppb |
| 2021 | 1.80 ppb | 1 | 1 | 1.80 ppb |
| 2022 | 2.70 ppb | 1 | 1 | 2.70 ppb |
| 2023 | 2.10 ppb | 1 | 1 | 2.10 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 |
|---|