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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Santa Clara Valley Water District

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

 

95

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND150ND
2015ND210ND
2016ND110ND
2017ND120ND
20181.94 ppb181ND - 34.9 ppb
2019ND180ND

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
2014-02-112400-011-0815ND
2014-02-112400-005-0920ND
2014-02-112400-007-1015ND
2014-05-202400-011-0945ND
2014-05-202400-007-1059ND
2014-05-202400-005-1202ND
2014-08-122400-011-0901ND
2014-08-122400-007-1010ND
2014-08-122400-005-1021ND
2014-11-042400-007-0916ND
2014-11-122400-023-0949ND
2014-11-122400-022-1030ND
2014-11-122400-024-1103ND
2014-12-022400-011-0926ND
2014-12-022400-005-1036ND
2015-02-232400-024-1240ND
2015-02-232400-023-1100ND
2015-02-232400-022-1200ND
2015-02-242400-011-0835ND
2015-02-242400-007-1008ND
2015-02-242400-005-0950ND
2015-05-182400-024-0920ND
2015-05-182400-023-0855ND
2015-05-182400-022-0950ND
2015-05-192400-011-0818ND
2015-05-192400-005-0935ND
2015-05-192400-007-0928ND
2015-08-182400-005-0956ND
2015-08-182400-022-1030ND
2015-08-182400-024-0930ND
2015-08-182400-007-1045ND
2015-08-182400-011-0835ND
2015-09-212400-023-1105ND
2015-11-172400-005-0954ND
2015-11-172400-011-0816ND
2015-11-172400-007-0844ND
2016-02-232400-011-0800ND
2016-02-232400-005-0930ND
2016-02-232400-007-0932ND
2016-05-172400-011-0813ND
2016-05-172400-005-0937ND
2016-05-172400-007-0939ND
2016-08-162400-007-1035ND
2016-08-162400-011-0810ND
2016-08-162400-005-0923ND
2016-11-152400-011-0758ND
2016-11-152400-007-0922ND
2017-02-212400-011-0827ND
2017-02-212400-007-0953ND
2017-05-162400-011-0845ND
2017-05-162400-007-0950ND
2017-05-172400-023-1023ND
2017-05-172400-024-1048ND
2017-05-172400-022-1117ND
2017-08-222400-005-1140ND
2017-08-222400-007-1038ND
2017-08-222400-011-0943ND
2017-11-142400-007-0734ND
2017-11-142400-005-0900ND
2018-02-202400-005-0958ND
2018-02-202400-007-0845ND
2018-03-272400-011-0833ND
2018-05-142400-022-0926ND
2018-05-142400-024-1015ND
2018-05-142400-023-0944ND
2018-05-152400-007-1250ND
2018-05-152400-011-1713ND
2018-05-152400-005-0848ND
2018-08-212400-005-130434.9 ppb
2018-08-212400-007-1125ND
2018-08-212400-011-0935ND
2018-08-222400-024-1017ND
2018-08-222400-023-1448ND
2018-08-222400-022-1055ND
2018-11-062400-007-1033ND
2018-11-062400-011-0920ND
2018-11-062400-005-1025ND
2019-02-192400-007-0950ND
2019-02-192400-011-0728ND
2019-02-192400-005-0835ND
2019-05-212400-007-1049ND
2019-05-212400-005-1030ND
2019-05-212400-011-0851ND
2019-05-222400-024-1140ND
2019-05-222400-023-1032ND
2019-05-222400-022-1228ND
2019-08-202400-005-0825ND
2019-08-202400-007-0955ND
2019-08-202400-011-0654ND
2019-11-192400-005-1045ND
2019-11-192400-011-0926ND
2019-11-192400-007-1207ND
2019-11-202400-024-1036ND
2019-11-202400-023-1000ND
2019-11-202400-022-1115ND