Manganese
Port Allen Water System
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 | N/A | 0 | 0 | N/A |
| 2020 | 15.0 ppb | 2 | 2 | 10.00 ppb - 20.0 ppb |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 20.0 ppb | 2 | 2 | 20.0 ppb |
| 2023 | 10.00 ppb | 4 | 2 | ND - 20.0 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 |
|---|---|---|
| 2020-03-25 | B2001412-001 | 10.00 ppb |
| 2020-03-25 | B2001412-002 | 20.0 ppb |
| 2022-09-20 | B2204554-001 | 20.0 ppb |
| 2022-09-20 | B2204554-002 | 20.0 ppb |
| 2023-03-14 | B2301071-001 | 20.0 ppb |
| 2023-03-14 | B2301071-002 | 20.0 ppb |
| 2023-03-14 | B2301071-003 | ND |
| 2023-03-14 | B2301071-004 | ND |