Manganese
City of Livermore
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.
4
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 | 0.674 ppb | 3 | 3 | 0.411 ppb - 1.04 ppb |
| 2019 | 0.540 ppb | 1 | 1 | 0.540 ppb |
| 2020 | 0.778 ppb | 18 | 1 | ND - 14.0 ppb |
| 2021 | 7.24 ppb | 83 | 18 | ND - 69.0 ppb |
| 2022 | 9.38 ppb | 78 | 10 | ND - 141.0 ppb |
| 2023 | 10.9 ppb | 63 | 19 | ND - 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 |
|---|---|---|
| 2018-05-01 | 1805067-001A | 0.411 ppb |
| 2018-08-02 | 1808121-001A | 1.04 ppb |
| 2018-11-06 | 1811247-001A | 0.571 ppb |
| 2019-02-07 | 1902372-001A | 0.540 ppb |