Manganese
Long Pond 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)
1
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 14.0 ppb | 1 | 1 | 14.0 ppb |
| 2019 | 9.40 ppb | 1 | 1 | 9.40 ppb |
| 2020 | 25.0 ppb | 1 | 1 | 25.0 ppb |
| 2021 | 173.0 ppb | 2 | 2 | 26.0 ppb - 320.0 ppb |
| 2022 | 18.0 ppb | 1 | 1 | 18.0 ppb |
| 2023 | 10.00 ppb | 1 | 1 | 10.00 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 |
|---|---|---|
| 2018-04-10 | 1804095-01 | 14.0 ppb |
| 2019-03-20 | 1903742-01 | 9.40 ppb |
| 2020-04-15 | 2003910-01 | 25.0 ppb |
| 2021-08-19 | 2113063-01 | 320.0 ppb |
| 2021-09-30 | 2116437-01 | 26.0 ppb |
| 2022-04-13 | 2203456-01 | 18.0 ppb |
| 2023-05-10 | 2303336-01 | 10.00 ppb |