Manganese
Liberty City Water Supply Corporation
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 | N/A | 0 | 0 | N/A |
| 2019 | 3.08 ppb | 4 | 4 | 1.90 ppb - 3.70 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 2.65 ppb | 4 | 4 | 1.30 ppb - 3.50 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 |
|---|---|---|
| 2019-03-28 | Q1912649001 | 3.70 ppb |
| 2019-03-28 | Q1912649003 | 3.40 ppb |
| 2019-03-28 | Q1912649004 | 3.30 ppb |
| 2019-03-28 | Q1912649005 | 1.90 ppb |
| 2022-03-28 | Q2209608002 | 3.00 ppb |
| 2022-10-24 | Q2231971008 | 3.50 ppb |
| 2022-10-24 | Q2231971009 | 2.80 ppb |
| 2022-10-24 | Q2231971010 | 1.30 ppb |