Manganese
St. Martin Parish Industrial Park Ws
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.
7
Samples
0
Samples exceeding legal limit (MCL)
4
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 | 215.0 ppb | 2 | 2 | 210.0 ppb - 220.0 ppb |
| 2021 | 40.0 ppb | 1 | 1 | 40.0 ppb |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 102.5 ppb | 4 | 3 | ND - 210.0 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 |
|---|---|---|
| 2020-06-22 | B2002966-001 | 220.0 ppb |
| 2020-06-22 | B2002966-002 | 210.0 ppb |
| 2021-10-29 | B2105906-001 | 40.0 ppb |
| 2023-04-10 | B2301568-001 | 180.0 ppb |
| 2023-04-10 | B2301568-002 | 20.0 ppb |
| 2023-08-28 | B2303560-001 | 210.0 ppb |
| 2023-08-28 | B2303560-002 | ND |