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EWG's Tap Water Database — 2019 UPDATE

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Manganese

St. Louis City

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013N/A00N/A
2014ND20ND
2015ND20ND
2016ND20ND
20170.175 ppb21ND - 0.350 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
2012-11-14AB87313ND
2012-11-14AB87314ND
2014-05-28AC23435ND
2014-05-28AC23436ND
2015-05-29HBCB052915IOCND
2015-05-29CRCW052915IOCND
2016-07-19HBCB071916IOCND
2016-07-19CRCW071916IOCND
2017-08-16CRCW081617IOC0.350 ppb
2017-08-16HBBC081617IOCND