Manganese
City of Edmonds
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 | 7.08 ppb | 4 | 4 | 1.60 ppb - 13.0 ppb |
| 2019 | ND | 1 | 0 | ND |
| 2020 | 4.71 ppb | 3 | 3 | 0.520 ppb - 10.00 ppb |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2019-11-13 | 201911140521 | ND |
| 2020-02-12 | 202002130600 | 3.60 ppb |
| 2020-05-12 | 202005130508 | 10.00 ppb |
| 2020-08-10 | 202008110218 | 0.520 ppb |