Manganese
St. Landry Water Works District 2 Rural
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 | 19.5 ppb | 2 | 2 | 19.0 ppb - 20.0 ppb |
| 2020 | 90.0 ppb | 2 | 2 | 90.0 ppb |
| 2021 | 40.0 ppb | 1 | 1 | 40.0 ppb |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 73.3 ppb | 3 | 3 | 40.0 ppb - 90.0 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 |
|---|---|---|
| 2019-06-10 | 112486P | 20.0 ppb |
| 2019-12-10 | 116185P | 19.0 ppb |
| 2020-10-19 | B2005465-001 | 90.0 ppb |
| 2020-10-19 | B2005465-002 | 90.0 ppb |
| 2021-11-23 | B2106493-001 | 40.0 ppb |
| 2023-10-16 | B2304440-001 | 90.0 ppb |
| 2023-10-16 | B2304440-002 | 90.0 ppb |
| 2023-10-16 | B2304440-003 | 40.0 ppb |