Manganese
City of West Tawakoni
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 | 12.6 ppb | 1 | 1 | 12.6 ppb |
| 2019 | 13.0 ppb | 1 | 1 | 13.0 ppb |
| 2020 | 23.0 ppb | 1 | 1 | 23.0 ppb |
| 2021 | 28.0 ppb | 1 | 1 | 28.0 ppb |
| 2022 | 16.0 ppb | 1 | 1 | 16.0 ppb |
| 2023 | 1.80 ppb | 1 | 1 | 1.80 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 |
|---|---|---|
| 2018-05-08 | AE28123 | 12.6 ppb |
| 2019-03-07 | Q1909951001 | 13.0 ppb |
| 2020-03-17 | Q2011583004 | 23.0 ppb |
| 2021-11-04 | Q2131004004 | 28.0 ppb |
| 2022-12-07 | Q2236661011 | 16.0 ppb |
| 2023-05-24 | Q2319585004 | 1.80 ppb |