Manganese
Madera Co. Md1-hidden Lake Estates
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 | 19.0 ppb | 1 | 1 | 19.0 ppb |
| 2019 | 24.0 ppb | 1 | 1 | 24.0 ppb |
| 2020 | 8.50 ppb | 1 | 1 | 8.50 ppb |
| 2021 | 21.0 ppb | 1 | 1 | 21.0 ppb |
| 2022 | 9.50 ppb | 1 | 1 | 9.50 ppb |
| 2023 | 38.0 ppb | 1 | 1 | 38.0 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 |
|---|---|---|
| 2018-01-09 | CA2000544_001_001-201801090830 | 19.0 ppb |
| 2019-01-22 | CA2000544_001_001-201901221045 | 24.0 ppb |
| 2020-01-30 | CA2000544_001_001-202001300950 | 8.50 ppb |
| 2021-01-20 | CA2000544_001_001-202101200927 | 21.0 ppb |
| 2022-01-25 | CA2000544_001_001-202201251050 | 9.50 ppb |
| 2023-03-22 | CA2000544_001_001-202303220930 | 38.0 ppb |