Manganese
Pg&e Helms Support Facility
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.
9
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 | 5 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 1 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-01-12 | CA1000472_001_001-201801121300 | ND |
| 2018-03-08 | CA1000472_001_001-201803081300 | ND |
| 2018-05-11 | CA1000472_001_001-201805111245 | ND |
| 2018-07-12 | CA1000472_001_001-201807121300 | ND |
| 2018-11-07 | CA1000472_001_001-201811071300 | ND |
| 2019-03-14 | CA1000472_001_001-201903141230 | ND |
| 2019-06-20 | CA1000472_001_001-201906201330 | ND |
| 2019-09-26 | CA1000472_001_001-201909261250 | ND |
| 2022-11-22 | CA1000472_001_001-202211221130 | ND |