Manganese
Hampton Shaler Water Authority
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 | 1.39 ppb | 2 | 2 | 1.15 ppb - 1.62 ppb |
| 2019 | 0.800 ppb | 3 | 2 | ND - 1.30 ppb |
| 2020 | 2.20 ppb | 3 | 3 | 1.20 ppb - 3.40 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 |
|---|---|---|
| 2019-07-15 | 7097627009SEA1 | 1.10 ppb |
| 2019-07-15 | 7097627010SEA1 | 1.30 ppb |
| 2019-10-01 | 70106927009SEA2 | ND |
| 2020-01-06 | 70117749009SEA2 | 1.20 ppb |
| 2020-01-07 | 70117749010SEA3 | 3.40 ppb |
| 2020-04-14 | 70128247009SEA4 | 2.00 ppb |