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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Waipahu-Ewa-Waianae

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

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20190.502 ppb348ND - 12.0 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
2019-02-04201902050143ND
2019-02-04201902050145ND
2019-02-052019020706131.60 ppb
2019-02-05201902060162ND
2019-02-05201902060167ND
2019-02-05201902070609ND
2019-02-05201902070611ND
2019-02-06201902080539ND
2019-02-062019020805380.540 ppb
2019-02-06201902070635ND
2019-02-06201902080540ND
2019-02-06201902080541ND
2019-02-07201902080423ND
2019-02-142019021501120.680 ppb
2019-02-25201902260200ND
2019-02-26201902270100ND
2019-02-282019030101630.630 ppb
2019-08-05201908070591ND
2019-08-05201908070589ND
2019-08-05201908060174ND
2019-08-052019080601700.620 ppb
2019-08-05201908070587ND
2019-08-07201908090579ND
2019-08-07201908090575ND
2019-08-072019080905770.450 ppb
2019-08-12201908130226ND
2019-08-12201908130228ND
2019-08-13201908140480ND
2019-08-1320190815083712.0 ppb
2019-08-13201908150835ND
2019-08-13201908150833ND
2019-08-14201908150796ND
2019-08-15201908160488ND
2019-09-102019091203990.560 ppb
2020-03-11202003130162ND