Manganese
Rumford 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.
7
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 | ND | 1 | 0 | ND |
| 2020 | 0.203 ppb | 3 | 1 | ND - 0.610 ppb |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 27.4 ppb | 1 | 1 | 27.4 ppb |
| 2023 | 2.50 ppb | 2 | 1 | ND - 5.00 ppb |
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 |
|---|---|---|
| 2019-06-18 | 201906120085-TE6 | ND |
| 2020-01-15 | 452000052-TE6 | ND |
| 2020-03-30 | 2004408-01 | 0.610 ppb |
| 2020-03-30 | 2004407-01 | ND |
| 2022-08-18 | 2208-04176-002 | 27.4 ppb |
| 2023-08-08 | 2308-01768-004 | ND |
| 2023-08-08 | 2308-01768-002 | 5.00 ppb |