Manganese
City of Alvarado
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.
4
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 | 0.995 ppb | 66 | 34 | ND - 4.50 ppb |
| 2019 | 2.23 ppb | 4 | 3 | ND - 5.20 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 2.16 ppb | 215 | 18 | ND - 233.0 ppb |
| 2023 | 0.352 ppb | 186 | 2 | ND - 48.3 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 |
|---|---|---|
| 2019-03-25 | Q1912075009 | 1.60 ppb |
| 2019-03-25 | Q1912075010 | 2.10 ppb |
| 2019-03-25 | Q1912075014 | ND |
| 2019-03-25 | Q1912075015 | 5.20 ppb |