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EWG's Tap Water Database — 2019 UPDATE

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Manganese

Washington Aqueduct Division

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.

 

143

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.521 ppb2416ND - 1.40 ppb
20130.550 ppb2416ND - 1.10 ppb
20140.458 ppb2417ND - 1.10 ppb
20150.575 ppb2418ND - 1.90 ppb
20162.40 ppb2420ND - 43.0 ppb
20170.517 ppb2321ND - 1.30 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
2012-01-01Dalecarlia0.900 ppb
2012-01-01McMillanND
2012-02-01Dalecarlia0.700 ppb
2012-02-01McMillanND
2012-03-01Dalecarlia0.600 ppb
2012-03-01McMillanND
2012-04-01Dalecarlia0.500 ppb
2012-04-01McMillanND
2012-05-01Dalecarlia0.700 ppb
2012-05-01McMillanND
2012-06-01Dalecarlia0.800 ppb
2012-06-01McMillan0.900 ppb
2012-07-01Dalecarlia1.40 ppb
2012-07-01McMillan0.800 ppb
2012-08-01Dalecarlia0.900 ppb
2012-08-01McMillan0.700 ppb
2012-09-01Dalecarlia0.700 ppb
2012-09-01McMillan0.600 ppb
2012-10-01Dalecarlia0.700 ppb
2012-10-01McMillanND
2012-11-01Dalecarlia0.700 ppb
2012-11-01McMillanND
2012-12-01Dalecarlia0.900 ppb
2012-12-01McMillanND
2013-01-01Dalecarlia1.000 ppb
2013-01-01McMillanND
2013-02-01Dalecarlia1.000 ppb
2013-02-01McMillanND
2013-03-01Dalecarlia0.600 ppb
2013-03-01McMillanND
2013-04-01Dalecarlia0.800 ppb
2013-04-01McMillanND
2013-05-01Dalecarlia0.600 ppb
2013-05-01McMillanND
2013-06-01Dalecarlia0.800 ppb
2013-06-01McMillanND
2013-07-01Dalecarlia0.900 ppb
2013-07-01McMillan0.800 ppb
2013-08-01Dalecarlia0.700 ppb
2013-08-01McMillan0.800 ppb
2013-09-01Dalecarlia0.900 ppb
2013-09-01McMillan0.600 ppb
2013-10-01Dalecarlia0.700 ppb
2013-10-01McMillanND
2013-11-01Dalecarlia0.900 ppb
2013-11-01McMillan1.000 ppb
2013-12-01Dalecarlia1.10 ppb
2013-12-01McMillanND
2014-01-01Dalecarlia1.10 ppb
2014-01-01McMillanND
2014-02-01Dalecarlia0.800 ppb
2014-02-01McMillanND
2014-03-01Dalecarlia0.600 ppb
2014-03-01McMillanND
2014-04-01Dalecarlia0.600 ppb
2014-04-01McMillanND
2014-05-01Dalecarlia0.400 ppb
2014-05-01McMillanND
2014-06-01Dalecarlia0.500 ppb
2014-06-01McMillanND
2014-07-01Dalecarlia0.800 ppb
2014-07-01McMillan0.500 ppb
2014-08-01Dalecarlia0.900 ppb
2014-08-01McMillan0.600 ppb
2014-09-01Dalecarlia1.000 ppb
2014-09-01McMillan0.500 ppb
2014-10-01Dalecarlia0.600 ppb
2014-10-01McMillan0.500 ppb
2014-11-01Dalecarlia0.600 ppb
2014-11-01McMillan0.200 ppb
2014-12-01Dalecarlia0.800 ppb
2014-12-01McMillanND
2015-01-01Dalecarlia0.800 ppb
2015-01-01McMillanND
2015-02-01Dalecarlia0.800 ppb
2015-02-01McMillan0.200 ppb
2015-03-01Dalecarlia0.600 ppb
2015-03-01McMillan0.200 ppb
2015-04-01Dalecarlia0.500 ppb
2015-04-01McMillanND
2015-05-01Dalecarlia0.600 ppb
2015-05-01McMillanND
2015-06-01Dalecarlia1.90 ppb
2015-06-01McMillan1.10 ppb
2015-07-01Dalecarlia0.600 ppb
2015-07-01McMillan1.10 ppb
2015-08-01Dalecarlia0.700 ppb
2015-08-01McMillan0.300 ppb
2015-09-01Dalecarlia1.20 ppb
2015-09-01McMillan1.10 ppb
2015-10-01Dalecarlia0.600 ppb
2015-10-01McMillanND
2015-11-01Dalecarlia0.800 ppb
2015-11-01McMillanND
2015-12-01Dalecarlia0.700 ppb
2015-12-01McMillanND
2016-01-01Dalecarlia0.800 ppb
2016-01-01McMillanND
2016-02-01Dalecarlia0.900 ppb
2016-02-01McMillan0.300 ppb
2016-03-01Dalecarlia0.600 ppb
2016-03-01McMillan0.200 ppb
2016-04-01Dalecarlia0.600 ppb
2016-04-01McMillanND
2016-05-01Dalecarlia0.900 ppb
2016-05-01McMillan0.300 ppb
2016-06-01Dalecarlia0.500 ppb
2016-06-01McMillan43.0 ppb
2016-07-01Dalecarlia0.900 ppb
2016-07-01McMillan1.70 ppb
2016-08-01Dalecarlia0.900 ppb
2016-08-01McMillan0.600 ppb
2016-09-01Dalecarlia1.50 ppb
2016-09-01McMillan1.10 ppb
2016-10-01Dalecarlia1.20 ppb
2016-10-01McMillan0.200 ppb
2016-11-01Dalecarlia0.900 ppb
2016-11-01McMillanND
2016-12-01Dalecarlia0.600 ppb
2016-12-01McMillanND
2017-01-01Dalecarlia0.800 ppb
2017-01-01McMillan0.300 ppb
2017-02-01Dalecarlia0.500 ppb
2017-02-01McMillan1.30 ppb
2017-03-01Dalecarlia0.500 ppb
2017-03-01McMillan0.200 ppb
2017-04-01Dalecarlia0.500 ppb
2017-04-01McMillan0.300 ppb
2017-05-01Dalecarlia0.500 ppb
2017-05-01McMillanND
2017-06-01Dalecarlia0.200 ppb
2017-06-01McMillanND
2017-07-01Dalecarlia0.800 ppb
2017-07-01McMillan0.500 ppb
2017-08-01Dalecarlia1.000 ppb
2017-08-01McMillan0.600 ppb
2017-09-01Dalecarlia0.600 ppb
2017-09-01McMillan0.300 ppb
2017-10-01Dalecarlia1.000 ppb
2017-10-01McMillan0.400 ppb
2017-11-01Dalecarlia0.600 ppb
2017-11-01McMillan0.400 ppb
2017-12-01Dalecarlia0.600 ppb