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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Los Angeles County WW District 4 & 34-Lancaster

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND20ND
2015ND20ND
20167.67 ppb203ND - 73.5 ppb
2017ND50ND
2018N/A00N/A
20190.648 ppb5917ND - 8.40 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
2014-03-265442-055-1034ND
2014-06-265442-093-0850ND
2015-01-285442-053-0915ND
2015-04-135442-054-0940ND
2016-01-195442-035-095073.5 ppb
2016-01-195442-040-0945ND
2016-01-255442-062-0930ND
2016-01-255442-028-0840ND
2016-01-255442-048-0940ND
2016-02-095442-069-1010ND
2016-02-095442-068-102527.2 ppb
2016-02-095442-070-1110ND
2016-02-095442-016-1028ND
2016-02-105442-071-1125ND
2016-02-245442-035-105052.6 ppb
2016-03-095442-023-1041ND
2016-03-285442-011-1138ND
2016-03-285442-067-0856ND
2016-04-205442-041-0934ND
2016-04-205442-026-1016ND
2016-06-085442-036-0945ND
2016-06-275442-095-1050ND
2016-06-275442-094-1125ND
2016-09-145442-037-1147ND
2017-11-219590-063-1010ND
2017-11-219590-055-0940ND
2017-11-219590-045-0935ND
2017-12-279590-093-1115ND
2017-12-279590-063-1010ND
2019-02-069590-067-1100ND
2019-02-119590-070-1125ND
2019-02-119590-071-1120ND
2019-02-199590-011-1145ND
2019-02-269590-048-1225ND
2019-02-269590-062-1210ND
2019-02-269590-028-1150ND
2019-03-139590-095-0925ND
2019-03-139590-095-0940ND
2019-03-139590-094-0920ND
2019-03-139590-036-1035ND
2019-03-199590-054-1300ND
2019-03-199590-053-1315ND
2019-03-199590-041-0930ND
2019-03-199590-040-1145ND
2019-03-269590-069-0945ND
2019-04-029590-035-1022ND
2019-04-029590-035-1009ND
2019-04-039590-035-1025ND
2019-04-039590-035-1035ND
2019-06-102019061003640.490 ppb
2019-06-10201906100362ND
2019-06-11201906110456ND
2019-06-112019061104616.80 ppb
2019-06-11201906110451ND
2019-06-11201906110449ND
2019-06-122019061203851.30 ppb
2019-06-122019061203910.940 ppb
2019-06-12201906120384ND
2019-06-12201906120440ND
2019-06-12201906120437ND
2019-06-12201906120438ND
2019-06-122019061204390.930 ppb
2019-06-172019061707010.710 ppb
2019-06-18201906180489ND
2019-06-18201906180492ND
2019-06-18201906180494ND
2019-06-199590-037-1000ND
2019-08-129590-026-0900ND
2019-08-199590-023-1020ND
2019-12-102019121102550.520 ppb
2019-12-102019121102541.20 ppb
2019-12-10201912110252ND
2019-12-10201912110250ND
2019-12-10201912110251ND
2019-12-102019121102532.00 ppb
2019-12-11201912110786ND
2019-12-112019121107794.20 ppb
2019-12-112019121107730.890 ppb
2019-12-112019121107962.00 ppb
2019-12-11201912110790ND
2019-12-112019121107982.10 ppb
2019-12-162019121603890.400 ppb
2019-12-16201912160391ND
2019-12-162019121603850.440 ppb
2019-12-16201912160387ND
2019-12-172019121711548.40 ppb
2019-12-172019121711564.90 ppb
2019-12-239590-095-0933ND
2020-03-182020031807910.530 ppb
2020-03-182020031807871.50 ppb
2020-03-182020031807960.440 ppb
2020-03-18202003180795ND