Manganese
City of Gonzales
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 | 4.00 ppb | 1 | 1 | 4.00 ppb |
| 2019 | 2.15 ppb | 2 | 2 | 1.40 ppb - 2.90 ppb |
| 2020 | 1.90 ppb | 1 | 1 | 1.90 ppb |
| 2021 | 2.00 ppb | 1 | 1 | 2.00 ppb |
| 2022 | 3.15 ppb | 2 | 2 | 1.50 ppb - 4.80 ppb |
| 2023 | 2.00 ppb | 1 | 1 | 2.00 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 |
|---|---|---|
| 2018-02-08 | AE12938 | 4.00 ppb |
| 2019-03-05 | AE57084 | 2.90 ppb |
| 2019-03-05 | AE57085 | 1.40 ppb |
| 2020-01-21 | AE94251 | 1.90 ppb |
| 2021-01-13 | AF39041 | 2.00 ppb |
| 2022-03-11 | AF88852 | 4.80 ppb |
| 2022-06-22 | AG01866 | 1.50 ppb |
| 2023-02-27 | AG30503 | 2.00 ppb |