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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Clark Public Utilities

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

 

33

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND10ND
2015N/A00N/A
201610.3 ppb41ND - 41.0 ppb
2017ND10ND
2018N/A00N/A
201913.5 ppb82ND - 66.0 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
2014-08-2691031ND
2016-02-12ND
2016-07-12ND
2016-08-24ND
2016-09-1441.0 ppb
2017-07-27ND
2019-04-02ND
2019-06-12ND
2019-07-22ND
2019-07-2242.0 ppb
2019-07-23ND
2019-08-29ND
2019-09-05ND
2019-09-1766.0 ppb
2020-03-25VDB0368-101.30 ppb
2020-03-25VDB0368-0923.0 ppb
2020-03-25VDB0368-02ND
2020-03-25VDB0368-08130.0 ppb
2020-03-25VDB0368-07ND
2020-03-25VDB0368-0616.0 ppb
2020-03-25VDB0368-053.30 ppb
2020-03-25VDB0368-04ND
2020-03-25VDB0368-0311.0 ppb
2020-03-25VDB0368-01ND
2020-09-16VDH0158-04ND
2020-09-16VDH0158-051.60 ppb
2020-09-16VDH0158-03ND
2020-09-16VDH0158-0614.0 ppb
2020-09-16VDH0158-02ND
2020-09-16VDH0158-080.600 ppb
2020-09-16VDH0158-013.10 ppb
2020-09-16VDH0158-0918.0 ppb
2020-09-16VDH0158-102.60 ppb