Manganese
Wallingford 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)
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 | 0.538 ppb | 8 | 4 | ND - 1.60 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2019-02-07 | 3015837001 | ND |
| 2019-02-07 | 3015837002 | ND |
| 2019-03-07 | 3021047001 | 1.40 ppb |
| 2019-05-09 | 3033650001 | ND |
| 2019-08-08 | 3052056001 | 1.60 ppb |
| 2019-08-08 | 3052056002 | ND |
| 2019-09-12 | 3059556001 | 0.860 ppb |
| 2019-11-07 | 3069528001 | 0.440 ppb |