Manganese

Floyd County

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	2	ND
2015	ND	4	ND
2016	ND	2	ND
2017	ND	2	ND
2018	ND	4	ND
2019	ND	2	ND

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
2014-02-19	AI28337	ND
2014-02-19	AI28336	ND
2015-01-21	AI63209	ND
2015-01-21	AI63210	ND
2015-03-17	AI69218	ND
2015-10-27	AI99844	ND
2016-01-25	AJ04876	ND
2016-01-25	AJ04877	ND
2017-01-25	AJ43568	ND
2017-01-25	AJ43569	ND
2018-02-14	AJ83997	ND
2018-02-14	AJ83998	ND
2018-05-21	AJ89845	ND
2018-05-21	AJ89847	ND
2019-01-09	AK09234	ND
2019-01-09	AK09232	ND
2020-02-25	4573730	ND
2020-02-25	4573891	ND
2020-02-25	4573740	12.7 ppb
2020-02-25	4573811	23.1 ppb
2020-02-25	4573883	0.407 ppb
2020-05-06	4622497	2.99 ppb
2020-05-06	4622968	1.82 ppb
2020-08-05	4690292	7.03 ppb
2020-08-05	4690296	ND
2020-08-05	4691294	11.5 ppb
2020-08-05	4691298	2.94 ppb
2020-08-05	4691326	ND
2020-11-17	4777981	7.61 ppb
2020-11-17	4778020	8.05 ppb