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EWG's Tap Water Database — 2019 UPDATE

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Manganese

Cal-am Water Company - Duarte

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND150ND
2014ND70ND
2015ND70ND
2016ND140ND
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
2013-09-129590-002-1440ND
2013-09-129590-003-1340ND
2013-09-129590-010-1450ND
2013-09-129590-004-1415ND
2013-09-129590-009-1355ND
2013-09-129590-007-1330ND
2013-09-129590-008-1425ND
2013-09-181225-019-0850ND
2013-09-181225-002-1130ND
2013-09-181225-003-1010ND
2013-09-181225-004-1045ND
2013-09-181225-007-0950ND
2013-09-181225-008-1105ND
2013-09-181225-009-1025ND
2013-09-181225-010-1150ND
2014-06-231225-007-1240ND
2014-06-231225-008-1235ND
2014-06-231225-003-1110ND
2014-06-231225-009-1135ND
2014-06-231225-002-1300ND
2014-06-231225-010-1330ND
2014-06-231225-019-1005ND
2015-09-281225-003-1050ND
2015-09-281225-007-1200ND
2015-09-281225-010-0945ND
2015-09-281225-008-1330ND
2015-09-281225-009-1345ND
2015-10-141225-002-1205ND
2015-10-141225-019-0945ND
2016-06-201225-008-1145ND
2016-06-201225-010-1135ND
2016-06-201225-019-1115ND
2016-07-201225-009-1030ND
2016-07-201225-007-0930ND
2016-07-201225-003-1000ND
2016-07-201225-002-1110ND
2016-08-109590-008-1030ND
2016-08-109590-019-1125ND
2016-08-109590-007-1045ND
2016-08-109590-010-1015ND
2016-08-119590-009-1150ND
2016-08-119590-003-1205ND
2016-08-119590-002-1105ND