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EWG's Tap Water Database — 2021 UPDATE

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Manganese

California Domestic Water 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

 

94

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND150ND
2015ND150ND
2016ND150ND
2017ND170ND
20181.50 ppb161ND - 24.0 ppb
2019ND160ND

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
2014-04-073761-005-0939ND
2014-04-073761-014-1025ND
2014-04-073761-006-0903ND
2014-04-073761-009-0735ND
2014-04-073761-008-0815ND
2014-04-073761-007-0921ND
2014-04-073761-004-0854ND
2014-04-093761-020-0721ND
2014-10-063761-004-0855ND
2014-10-063761-005-1024ND
2014-10-063761-006-0943ND
2014-10-063761-007-1000ND
2014-10-063761-008-0837ND
2014-10-063761-009-0750ND
2014-12-163761-014-0905ND
2015-04-063761-007-0757ND
2015-04-063761-006-0743ND
2015-04-063761-009-0525ND
2015-04-063761-008-0730ND
2015-04-063761-014-0700ND
2015-04-063761-005-0555ND
2015-04-063761-004-0850ND
2015-10-053761-014-1029ND
2015-10-053761-009-0725ND
2015-10-053761-008-0902ND
2015-10-053761-007-0921ND
2015-10-053761-004-0809ND
2015-10-053761-005-0943ND
2015-10-053761-006-0840ND
2015-11-199588-020-1055ND
2016-04-043761-014-1140ND
2016-04-043761-005-1030ND
2016-04-043761-009-0745ND
2016-04-043761-006-1015ND
2016-04-043761-008-0852ND
2016-04-043761-004-0915ND
2016-04-043761-007-0958ND
2016-10-033761-005-0948ND
2016-10-033761-020-1004ND
2016-10-033761-004-0829ND
2016-10-033761-006-0903ND
2016-10-033761-014-1107ND
2016-10-033761-008-0813ND
2016-10-033761-009-0729ND
2016-10-033761-007-0924ND
2017-04-033761-005-1015ND
2017-04-033761-020-1031ND
2017-04-033761-009-0748ND
2017-04-033761-014-1135ND
2017-04-033761-008-0834ND
2017-04-033761-007-0954ND
2017-04-033761-006-0937ND
2017-04-033761-004-0915ND
2017-09-263761-009-0930ND
2017-10-023761-004-0837ND
2017-10-023761-014-1115ND
2017-10-023761-006-1003ND
2017-10-023761-008-0815ND
2017-10-023761-009-0729ND
2017-10-023761-020-1020ND
2017-10-023761-005-0919ND
2017-10-023761-007-0940ND
2018-04-023761-014-1150ND
2018-04-023761-004-0900ND
2018-04-023761-009-0757ND
2018-04-023761-020-1054ND
2018-04-023761-008-0931ND
2018-04-023761-007-1018ND
2018-04-023761-006-0950ND
2018-04-023761-005-103824.0 ppb
2018-10-013761-005-1029ND
2018-10-013761-020-1015ND
2018-10-013761-014-1127ND
2018-10-013761-009-0740ND
2018-10-013761-008-0822ND
2018-10-013761-007-0940ND
2018-10-013761-006-0958ND
2018-10-043761-004-0815ND
2019-04-013761-006-0956ND
2019-04-013761-020-1115ND
2019-04-013761-014-1125ND
2019-04-013761-005-1131ND
2019-04-013761-009-0814ND
2019-04-013761-008-0840ND
2019-04-013761-007-0941ND
2019-04-083761-004-0920ND
2019-10-073761-020-1002ND
2019-10-073761-014-0958ND
2019-10-073761-005-1055ND
2019-10-073761-009-0800ND
2019-10-073761-004-0919ND
2019-10-073761-008-0843ND
2019-10-073761-007-1130ND
2019-10-073761-006-1118ND