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EWG's Tap Water Database

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Manganese

Public Wholesale WSD 5

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND10ND
2012ND10ND
2013ND10ND
20141.80 ppb111.80 ppb
201522.0 ppb1122.0 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 100 ppb

The health guideline of 100 ppb for manganese was defined by the State of Minnesota as a risk assessment advisory level, a non-enforceable guideline. This health guideline protects against harm to the brain and nervous system.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-03-02542899WSND
2011-05-03561159WSND
2012-05-08578530WSND
2013-05-07595616WSND
2014-04-221002091.80 ppb
2015-04-2131646522.0 ppb