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EWG's Tap Water Database — 2019 UPDATE

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Manganese

Franklin Water Systems 3

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013N/A00N/A
2014N/A00N/A
20150.140 ppb31ND - 0.420 ppb
2016ND20ND
2017N/A00N/A

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 Lab ID Result
2012-03-26AB85134ND
2012-03-26AB85135ND
2012-03-26AB85136ND
2015-03-25Q1511062004ND
2015-03-25Q1511062005ND
2015-03-25Q15110620060.420 ppb
2016-12-13Q1654192020ND
2016-12-13Q1654192021ND