Manganese
Travis County Water Control and Improvement District 20
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 | ND | 1 | 0 | ND |
| 2019 | 2.80 ppb | 1 | 1 | 2.80 ppb |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 2.20 ppb | 1 | 1 | 2.20 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2018-02-15 | AE13977 | ND |
| 2019-03-04 | AE56839 | 2.80 ppb |
| 2020-03-03 | AF00799 | ND |
| 2021-01-25 | AF40611 | 2.20 ppb |
| 2022-04-28 | AF94757 | ND |
| 2023-02-14 | AG28751 | ND |