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EWG's Tap Water Database — 2019 UPDATE

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Manganese

Rocky Branch Water System

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.

 

16

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
2013N/A00N/A
2014ND80ND
2015N/A00N/A
2016N/A00N/A
20170.850 ppb82ND - 3.40 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
2014-02-17AD89237ND
2014-02-17AD89237ND
2014-02-17AD89232ND
2014-02-17AD89232ND
2014-07-15AD93557ND
2014-07-15AD93562ND
2014-07-15AD93562ND
2014-07-15AD93557ND
2017-03-1435301204004ND
2017-03-1435301204003ND
2017-03-1435301204003ND
2017-03-1435301204004ND
2017-07-1035324127011ND
2017-07-10353241270103.40 ppb
2017-07-1035324127011ND
2017-07-10353241270103.40 ppb