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EWG's Tap Water Database — 2019 UPDATE

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Manganese

City of Gilroy

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013N/A00N/A
2014N/A00N/A
2015ND80ND
2016N/A00N/A
2017N/A00N/A

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
2012-05-215810-001-0850ND
2012-05-215810-006-1315ND
2012-05-215810-004-1045ND
2012-05-215810-002-1135ND
2012-05-225810-010-1115ND
2012-05-225810-009-1035ND
2012-05-225810-008-0955ND
2012-05-225810-007-0745ND
2012-05-225810-011-0835ND
2015-05-205810-010-0810ND
2015-05-205810-008-1025ND
2015-05-205810-007-1300ND
2015-05-205810-006-0945ND
2015-05-215810-011-0955ND
2015-05-215810-004-1250ND
2015-05-215810-002-1010ND
2015-05-215810-001-0800ND