Manganese
Oak Ridge Department of Public Works
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 | 16.8 ppb | 2 | 2 | 0.770 ppb - 32.8 ppb |
| 2019 | 7.30 ppb | 2 | 2 | 2.20 ppb - 12.4 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 2 | 0 | ND |
| 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 | Result |
|---|---|
| 2018-08-15 | 0.770 ppb |
| 2018-11-14 | 32.8 ppb |
| 2019-02-13 | 2.20 ppb |
| 2019-05-08 | 12.4 ppb |
| 2022-02-10 | ND |
| 2022-02-10 | ND |