Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Manganese

Dalton Utilities

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

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND30ND
201624.0 ppb32ND - 45.0 ppb
2017ND30ND
2018ND30ND
20192.32 ppb1912ND - 29.0 ppb

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
2014-02-24AI28475ND
2014-02-24AI28474ND
2015-01-27AI63480ND
2015-01-27AI63481ND
2015-03-09AI68508ND
2016-02-08AJ06018ND
2016-02-08AJ0601945.0 ppb
2016-03-28AJ0875827.0 ppb
2017-02-14AJ46457ND
2017-02-14AJ46458ND
2017-02-14AJ46459ND
2018-02-26AJ84556ND
2018-02-26AJ84561ND
2018-02-26AJ84562ND
2019-01-154173763ND
2019-01-1541737820.857 ppb
2019-01-1541737780.569 ppb
2019-01-1541737700.449 ppb
2019-04-3042781470.445 ppb
2019-04-304278167ND
2019-04-3042781613.24 ppb
2019-04-3042781310.696 ppb
2019-05-08AK16826ND
2019-05-08AK16827ND
2019-05-08AK1682529.0 ppb
2019-08-1343850931.49 ppb
2019-08-1343850443.36 ppb
2019-08-134385066ND
2019-08-1343850891.54 ppb
2019-10-084448374ND
2019-10-0844483641.35 ppb
2019-10-084448346ND
2019-10-0844483521.08 ppb