Manganese
Rra Preston Shores Water System
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 | ND | 1 | 0 | ND |
| 2019 | 2.40 ppb | 1 | 1 | 2.40 ppb |
| 2020 | 1.10 ppb | 1 | 1 | 1.10 ppb |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 1.000 ppb | 1 | 1 | 1.000 ppb |
| 2023 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2018-06-19 | Q1824375004 | ND |
| 2019-02-25 | Q1907958002 | 2.40 ppb |
| 2020-03-02 | Q2007763005 | 1.10 ppb |
| 2021-05-19 | Q2113145003 | ND |
| 2022-03-02 | Q2207209002 | 1.000 ppb |
| 2023-02-22 | Q2307465003 | ND |