Manganese
Aquarion Water Company of Connecticut - Valley System
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 | 19.3 ppb | 8 | 8 | 3.27 ppb - 51.2 ppb |
| 2019 | 2.27 ppb | 1 | 1 | 2.27 ppb |
| 2020 | 10.1 ppb | 4 | 4 | 1.50 ppb - 23.5 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 |
|---|---|---|
| 2018-03-20 | U8C0004-01 | 51.2 ppb |
| 2018-03-20 | U8C0004-04 | 3.56 ppb |
| 2018-05-22 | U8E0075-01 | 20.9 ppb |
| 2018-06-19 | U8F0003-01 | 4.86 ppb |
| 2018-09-18 | U8I0008-01 | 19.5 ppb |
| 2018-09-18 | U8I0008-02 | 40.0 ppb |
| 2018-09-18 | U8I0008-04 | 10.9 ppb |
| 2018-12-17 | U8L0007-04 | 3.27 ppb |
| 2019-04-16 | U9D0048-01 | 2.27 ppb |