Manganese
Mill River Water District
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 | 0.350 ppb | 6 | 2 | ND - 1.10 ppb |
| 2019 | 0.550 ppb | 2 | 1 | ND - 1.10 ppb |
| 2020 | 1.50 ppb | 2 | 1 | ND - 3.00 ppb |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2020-06-17 | AW11407-INS | 3.00 ppb |
| 2020-12-09 | AW23564-INS | ND |
| 2021-05-19 | AX09623-INS | ND |
| 2021-12-09 | AX24400-INS | ND |
| 2022-06-08 | AY09687-INS | ND |
| 2022-11-02 | AY19818-INS | ND |
| 2023-05-22 | AZ09224-INS | ND |
| 2023-10-17 | AZ19164-INS | ND |