Manganese
Wells Municipal Water Department
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)
1
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | 3.67 ppb | 3 | 1 | ND - 11.0 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 46.7 ppb | 3 | 1 | ND - 140.0 ppb |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-10-23 | 18100760-001 | ND |
| 2019-09-10 | 19090295-001 | ND |
| 2019-09-10 | 19090298-001 | ND |
| 2019-09-10 | 19090299-001 | 11.0 ppb |
| 2021-09-14 | 21090444-001 | ND |
| 2022-03-09 | 22030311-001 | ND |
| 2022-03-14 | 22030453-001 | 140.0 ppb |
| 2022-03-14 | 22030453-002 | ND |