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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Woodland-davis Clean Water Agency

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.

MORE ABOUT THIS CONTAMINANT

 

26

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
2015N/A00N/A
2016ND70ND
2017ND140ND
2018ND30ND
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 Lab ID Result
2016-05-245810-002-1055ND
2016-06-155810-002-0756ND
2016-08-175810-002-1225ND
2016-09-145810-002-1100ND
2016-10-125810-002-1055ND
2016-11-095810-002-1200ND
2016-12-145810-002-1155ND
2017-01-115810-002-1101ND
2017-02-085810-002-1043ND
2017-03-085810-002-1125ND
2017-04-125810-002-1117ND
2017-05-105810-002-1110ND
2017-05-105810-002-1115ND
2017-06-145810-002-1010ND
2017-07-125810-002-1209ND
2017-08-095810-002-1258ND
2017-09-135810-002-1009ND
2017-10-115810-002-1153ND
2017-10-185810-002-1810ND
2017-11-085810-002-1128ND
2017-12-135810-002-1107ND
2018-05-095810-002-1030ND
2018-12-115810-002-2145ND
2018-12-265810-002-1506ND
2019-04-105810-002-1155ND
2019-04-105810-002-1205ND