Manganese
City of Hallettsville
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 | 6.20 ppb | 1 | 1 | 6.20 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | 7.10 ppb | 2 | 2 | 6.90 ppb - 7.30 ppb |
| 2021 | 5.90 ppb | 1 | 1 | 5.90 ppb |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 4.60 ppb | 2 | 2 | 4.30 ppb - 4.90 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 |
|---|---|---|
| 2018-09-19 | AE40634 | 6.20 ppb |
| 2020-05-19 | AF11736 | 6.90 ppb |
| 2020-05-19 | AF11737 | 7.30 ppb |
| 2021-06-10 | AF57362 | 5.90 ppb |
| 2023-03-06 | AG31595 | 4.30 ppb |
| 2023-03-06 | AG31596 | 4.90 ppb |