Manganese
Alta Sierra Mutual Water Company
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.
7
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 9.50 ppb | 2 | 1 | ND - 19.0 ppb |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2019-05-13 | CA1500209_002_002-201905131005 | ND |
| 2020-08-12 | CA1500209_003_003-202008121225 | ND |
| 2020-08-12 | CA1500209_001_001-202008121339 | ND |
| 2022-05-11 | CA1500209_002_002-202205111145 | ND |
| 2022-11-29 | CA1500209_006_006-202211291100 | 19.0 ppb |
| 2023-08-23 | CA1500209_003_003-202308231105 | ND |
| 2023-08-23 | CA1500209_001_001-202308231055 | ND |