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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Miramar (East & West) Plants

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND20ND
20160.1000 ppb21ND - 0.200 ppb
20170.450 ppb220.300 ppb - 0.600 ppb
20180.383 ppb64ND - 0.940 ppb
2019ND20ND

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 Result
2015-09-09ND
2015-09-10ND
2016-09-130.200 ppb
2016-09-13ND
2017-09-290.600 ppb
2017-09-290.300 ppb
2018-02-270.940 ppb
2018-02-270.680 ppb
2018-08-08ND
2018-08-080.1000 ppb
2018-08-270.580 ppb
2018-08-28ND
2019-08-14ND
2019-08-14ND