Manganese
Chalk Hill Special Utility 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.
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 | 3.00 ppb | 1 | 1 | 3.00 ppb |
| 2019 | 4.20 ppb | 2 | 2 | 2.40 ppb - 6.00 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 3.50 ppb | 1 | 1 | 3.50 ppb |
| 2022 | 4.50 ppb | 2 | 2 | 2.40 ppb - 6.60 ppb |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-06-20 | Q1824487001 | 3.00 ppb |
| 2019-01-10 | Q1901411001 | 2.40 ppb |
| 2019-04-08 | Q1914000009 | 6.00 ppb |
| 2021-11-09 | Q2131359006 | 3.50 ppb |
| 2022-12-13 | Q2237298008 | 2.40 ppb |
| 2022-12-13 | Q2237298009 | 6.60 ppb |