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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Augusta-Richmond Company

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.

MORE ABOUT THIS CONTAMINANT

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND20ND
2015ND20ND
2016ND50ND
2017ND20ND
2018ND20ND
2019ND50ND

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
2014-02-24AI28525ND
2014-02-24AI28524ND
2015-03-12AI68993ND
2015-03-12AI68994ND
2016-02-16AJ06556ND
2016-02-16AJ06558ND
2016-04-07AJ09709ND
2016-04-07AJ09710ND
2016-04-07AJ09711ND
2017-02-07AJ46017ND
2017-02-07AJ46018ND
2018-03-14AJ85990ND
2018-03-14AJ85991ND
2019-03-04AK12436ND
2019-03-04AK12437ND
2019-05-08AK16917ND
2019-05-08AK16918ND
2019-05-08AK16916ND
2020-03-1635537749001SEA12.10 ppb
2020-03-1635537749002SEA11.30 ppb
2020-03-1635537749003SEA12.60 ppb
2020-03-1635537749004SEA12.80 ppb
2020-03-1635537749005SEA10.820 ppb
2020-06-1635557167001SEA21.10 ppb
2020-06-1635557167002SEA2ND
2020-09-0935577095001SEA24.90 ppb
2020-09-0935577095002SEA21.40 ppb
2020-09-0935577095003SEA39.10 ppb
2020-09-0935577095004SEA22.90 ppb
2020-09-0935577095005SEA3ND
2020-12-1635599658001SEA438.3 ppb
2020-12-1635599658002SEA4ND