Manganese
Tempe Water Supply Corporation 1
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)
3
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 151.0 ppb | 2 | 2 | 118.0 ppb - 184.0 ppb |
| 2019 | 1.000 ppb | 1 | 1 | 1.000 ppb |
| 2020 | 34.1 ppb | 1 | 1 | 34.1 ppb |
| 2021 | 66.4 ppb | 3 | 2 | ND - 180.0 ppb |
| 2022 | 4.90 ppb | 1 | 1 | 4.90 ppb |
| 2023 | 31.5 ppb | 1 | 1 | 31.5 ppb |
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 |
|---|---|---|
| 2018-02-13 | AE13488 | 118.0 ppb |
| 2018-02-13 | AE13490 | 184.0 ppb |
| 2019-02-26 | AE55867 | 1.000 ppb |
| 2020-02-12 | AE98069 | 34.1 ppb |
| 2021-01-27 | AF41263 | 180.0 ppb |
| 2021-01-27 | AF41265 | 19.3 ppb |
| 2021-09-07 | C1I1900-01 | ND |
| 2022-02-09 | AF83925 | 4.90 ppb |
| 2023-02-16 | AG29247 | 31.5 ppb |