Know Your Environment. Protect Your Health.

Manganese

Johnson City Water Department

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
20190.200 ppb41ND - 0.800 ppb
20208.32 ppb64ND - 46.4 ppb
2021ND20ND
2022N/A00N/A
2023N/A00N/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 Result
2018-09-18ND
2018-09-18ND
2019-09-11ND
2019-09-11ND
2019-11-110.800 ppb
2019-11-11ND
2020-02-100.610 ppb
2020-02-10ND
2020-05-1246.4 ppb
2020-05-211.30 ppb
2020-08-101.60 ppb
2020-08-10ND
2021-09-21ND
2021-09-21ND