Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Manganese

Great Oaks Water Company Inc.

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

 

69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015N/A00N/A
2016ND140ND
2017ND40ND
2018N/A00N/A
2019ND150ND

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
2014-08-259590-022-1505ND
2014-08-259590-021-1545ND
2016-05-259590-025-1415ND
2016-08-229590-004-1230ND
2016-08-229590-011-1325ND
2016-08-229590-009-1410ND
2016-08-249590-015-1450ND
2016-08-249590-018-1315ND
2016-08-249590-013-1230ND
2016-08-249590-023-1405ND
2016-08-259590-008-1255ND
2016-08-259590-019-1350ND
2016-08-259590-002-1435ND
2016-08-259590-001-1205ND
2016-09-069590-007-1400ND
2016-11-029590-025-1115ND
2017-04-139590-006-1000ND
2017-06-019590-010-1030ND
2017-08-309590-021-1510ND
2017-08-319590-022-1515ND
2019-08-289590-001-1420ND
2019-08-289590-002-1030ND
2019-08-289590-006-0920ND
2019-08-289590-007-1120ND
2019-08-299590-015-0850ND
2019-08-299590-004-1310ND
2019-08-299590-008-1410ND
2019-08-299590-009-0745ND
2019-08-299590-018-1000ND
2019-09-059590-023-1400ND
2019-09-059590-019-1145ND
2019-09-059590-025-1250ND
2019-09-129590-010-1145ND
2019-09-129590-011-1300ND
2019-09-129590-013-1430ND
2020-06-22202006240370ND
2020-06-22202006240369ND
2020-06-222020062403680.870 ppb
2020-06-222020062403672.30 ppb
2020-06-22202006240366ND
2020-06-22202006240365ND
2020-06-24202006250091ND
2020-06-24202006250088ND
2020-06-242020062500890.790 ppb
2020-06-242020062500900.430 ppb
2020-06-242020062500930.650 ppb
2020-06-24202006250092ND
2020-06-25202006260276ND
2020-06-25202006260274ND
2020-06-25202006260275ND
2020-06-25202006260273ND
2020-06-25202006260272ND
2020-12-152020121604191.60 ppb
2020-12-152020121604220.780 ppb
2020-12-15202012160418ND
2020-12-15202012160421ND
2020-12-15202012160420ND
2020-12-152020121604170.650 ppb
2020-12-162020121702461.20 ppb
2020-12-162020121702481.30 ppb
2020-12-162020121702451.70 ppb
2020-12-162020121702440.620 ppb
2020-12-16202012170247ND
2020-12-162020121702430.540 ppb
2020-12-17202012180145ND
2020-12-17202012180146ND
2020-12-17202012180144ND
2020-12-17202012180143ND
2020-12-17202012180142ND