Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Manganese

Tennessee American Water

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND40ND
2014ND30ND
2015ND20ND
2016ND20ND
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-03-13ND
2012-06-18ND
2013-01-29ND
2013-06-05ND
2013-09-25ND
2013-12-04ND
2014-01-20ND
2014-07-23ND
2014-10-21ND
2015-01-12ND
2015-07-21ND
2016-01-19ND
2016-07-13ND
2017-01-10ND
2017-07-11ND