Manganese
City of La Grulla
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 | 7.30 ppb | 1 | 1 | 7.30 ppb |
| 2019 | 8.70 ppb | 1 | 1 | 8.70 ppb |
| 2020 | 3.00 ppb | 1 | 1 | 3.00 ppb |
| 2021 | 10.7 ppb | 1 | 1 | 10.7 ppb |
| 2022 | 3.80 ppb | 1 | 1 | 3.80 ppb |
| 2023 | 4.50 ppb | 1 | 1 | 4.50 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 |
|---|---|---|
| 2018-03-06 | AE16874 | 7.30 ppb |
| 2019-02-05 | AE53098 | 8.70 ppb |
| 2020-02-25 | AE99960 | 3.00 ppb |
| 2021-06-10 | AF57370 | 10.7 ppb |
| 2022-08-10 | AG08692 | 3.80 ppb |
| 2023-03-21 | AG33502 | 4.50 ppb |