Manganese
West Hill Water Company Inc.
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)
6
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 269.0 ppb | 1 | 1 | 269.0 ppb |
| 2019 | 290.0 ppb | 1 | 1 | 290.0 ppb |
| 2020 | 23.1 ppb | 1 | 1 | 23.1 ppb |
| 2021 | 269.0 ppb | 1 | 1 | 269.0 ppb |
| 2022 | 288.0 ppb | 1 | 1 | 288.0 ppb |
| 2023 | 312.5 ppb | 2 | 2 | 307.0 ppb - 318.0 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 |
|---|---|---|
| 2018-12-13 | JH1809853-SEC | 269.0 ppb |
| 2019-10-24 | JH1907699-SEC | 290.0 ppb |
| 2020-08-20 | JH2006279-SEC | 23.1 ppb |
| 2021-09-14 | JH2108280-SEC | 269.0 ppb |
| 2022-07-20 | JH2205786-SEC | 288.0 ppb |
| 2023-07-25 | JH2305933-SEC | 307.0 ppb |
| 2023-08-31 | JH2307488-FE | 318.0 ppb |