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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Csa No. 31 Stonegate Ws

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

 

89

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201413.9 ppb163ND - 97.0 ppb
201515.5 ppb152ND - 170.0 ppb
20165.71 ppb172ND - 61.0 ppb
201717.9 ppb164ND - 190.0 ppb
201816.8 ppb153ND - 180.0 ppb
2019234.0 ppb102ND - 1,990.0 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
2014-01-081610-004-1300ND
2014-02-111610-004-1200ND
2014-03-101610-003-104567.0 ppb
2014-03-101610-004-1050ND
2014-04-141610-004-1430ND
2014-05-121610-004-1350ND
2014-06-091610-003-1100ND
2014-06-091610-004-1111ND
2014-07-141610-004-0900ND
2014-08-111610-004-1500ND
2014-09-081610-003-112059.0 ppb
2014-09-081610-004-1111ND
2014-10-131610-004-1000ND
2014-11-101610-004-0800ND
2014-12-081610-004-1212ND
2014-12-081610-003-120097.0 ppb
2015-01-121610-004-1000ND
2015-03-091610-003-1410ND
2015-03-091610-004-1400ND
2015-04-131610-004-1400ND
2015-05-111610-004-0900ND
2015-06-081610-003-0900ND
2015-06-081610-004-0900ND
2015-07-131610-004-1000ND
2015-08-101610-002-0900ND
2015-09-141610-003-110063.0 ppb
2015-09-141610-004-1100ND
2015-10-121610-004-1440ND
2015-11-091610-004-0800ND
2015-12-071610-003-1110170.0 ppb
2015-12-071610-004-1100ND
2016-01-111610-004-0700ND
2016-02-081610-004-1330ND
2016-03-071610-003-1631ND
2016-03-071610-004-1630ND
2016-04-111610-004-1645ND
2016-05-091610-004-0700ND
2016-06-131610-004-1705ND
2016-06-131610-003-170061.0 ppb
2016-07-111610-004-1800ND
2016-07-181610-003-0700ND
2016-08-081610-004-1400ND
2016-09-121610-003-091036.0 ppb
2016-09-121610-004-0900ND
2016-10-171610-004-1500ND
2016-11-181610-004-1000ND
2016-12-121610-004-1200ND
2016-12-121610-003-1200ND
2017-01-121610-004-0700ND
2017-02-131610-004-0900ND
2017-03-081610-004-1305ND
2017-03-081610-003-1300ND
2017-04-131610-004-0700ND
2017-05-121610-004-1100ND
2017-06-121610-004-1200ND
2017-06-121610-003-1205ND
2017-07-271610-004-090025.0 ppb
2017-08-141610-004-0900ND
2017-09-111610-003-0725ND
2017-09-111610-004-0730ND
2017-10-091610-004-0700ND
2017-11-081610-004-0600190.0 ppb
2017-12-121610-004-070033.0 ppb
2017-12-121610-003-070038.0 ppb
2018-01-081610-004-0800ND
2018-02-101610-004-140028.0 ppb
2018-03-161610-004-0700ND
2018-03-161610-003-070544.0 ppb
2018-04-091610-003-1410ND
2018-05-141610-004-1400ND
2018-06-291610-002-1205ND
2018-07-121610-004-1040ND
2018-08-131610-004-1120ND
2018-09-101610-004-1010ND
2018-09-101610-003-1000180.0 ppb
2018-10-101610-004-0650ND
2018-11-131610-004-0850ND
2018-12-111610-003-1315ND
2018-12-111610-004-1315ND
2019-01-111610-004-1015ND
2019-02-111610-004-1500ND
2019-03-111610-003-1235ND
2019-03-111610-004-1240ND
2019-04-221610-004-1300ND
2019-05-241610-004-1448ND
2019-10-092385-003-13301,990.0 ppb
2019-11-141610-004-0918ND
2019-12-091610-003-1220350.0 ppb
2019-12-091610-004-1225ND