Manganese
Clackamas River Water - Clackamas
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.
8
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 | 0.313 ppb | 4 | 2 | ND - 0.700 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-01-22 | 18-02461-4957 | 0.550 ppb |
| 2018-04-16 | 18-12979-26871 | 0.700 ppb |
| 2018-07-23 | 201807240331 | ND |
| 2018-10-22 | 201810230292 | ND |
| 2020-01-28 | 002803001-I | ND |
| 2021-01-26 | 102602901-I | ND |
| 2022-01-25 | 2025019-01-I | ND |
| 2023-02-08 | 3039006-01-I | ND |