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EWG's Tap Water Database — 2019 UPDATE

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Manganese

Salem Beverly Water Supply Board

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
201470.0 ppb2210.00 ppb - 130.0 ppb
2015ND40ND
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
2014-07-01130.0 ppb
2014-11-1310.00 ppb
2015-01-13ND
2015-04-28ND
2015-07-27ND
2015-11-03ND
2016-01-22ND
2016-01-22ND
2017-08-03ND
2017-11-02ND