Manganese
Bellevue Municipal Utilities
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.400 ppb | 2 | 2 | 0.400 ppb |
| 2022 | 0.250 ppb | 2 | 2 | 0.200 ppb - 0.300 ppb |
| 2023 | ND | 2 | 0 | ND |
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 |
|---|---|---|
| 2021-11-29 | 1EK2562-01 | 0.400 ppb |
| 2021-11-29 | 1EK2562-02 | 0.400 ppb |
| 2022-10-18 | 1FJ1711-01 | 0.200 ppb |
| 2022-10-18 | 1FJ1711-02 | 0.300 ppb |
| 2023-10-30 | 1GK0139-01 | ND |
| 2023-10-30 | 1GK0139-02 | ND |