Manganese
Lake Sherwood Community Services 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.
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 | 15.0 ppb | 12 | 4 | ND - 120.0 ppb |
| 2019 | 11.0 ppb | 10 | 2 | ND - 60.0 ppb |
| 2020 | 2.00 ppb | 10 | 1 | ND - 20.0 ppb |
| 2021 | 5.56 ppb | 9 | 2 | ND - 30.0 ppb |
| 2022 | 30.4 ppb | 25 | 16 | ND - 170.0 ppb |
| 2023 | 57.5 ppb | 37 | 24 | ND - 230.0 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 |
|---|---|---|
| 2013-03-19 | 100574Q | ND |
| 2013-03-19 | 300660P | ND |
| 2013-06-17 | 101508Q | ND |
| 2013-06-17 | 301442P | ND |
| 2013-09-17 | 102108P | 1.40 ppb |
| 2013-09-17 | 302033P | 1.40 ppb |
| 2013-12-17 | 102828Q | ND |
| 2013-12-17 | 302761P | ND |