Manganese

Cassatt Water Kershaw-lee Company RWA

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	Detections	Range of results
2014	N/A	0	0	N/A
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	1.84 ppb	27	27	0.468 ppb - 6.13 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
2019-03-25	4237164	0.913 ppb
2019-03-25	4237168	1.99 ppb
2019-03-25	4237159	1.01 ppb
2019-03-25	4237112	3.09 ppb
2019-03-25	4237180	1.24 ppb
2019-03-25	4237126	0.795 ppb
2019-03-25	4237078	0.994 ppb
2019-03-25	4237096	1.26 ppb
2019-03-25	4237139	2.68 ppb
2019-03-25	4237092	0.899 ppb
2019-03-25	4237150	2.24 ppb
2019-03-25	4237174	2.31 ppb
2019-03-26	4238760	4.01 ppb
2019-06-13	4325087	0.499 ppb
2019-09-25	4437190	0.468 ppb
2019-09-25	4436804	0.904 ppb
2019-09-25	4437294	1.000 ppb
2019-09-25	4437170	1.31 ppb
2019-09-25	4437339	6.13 ppb
2019-09-25	4437394	1.61 ppb
2019-09-25	4437400	2.33 ppb
2019-09-26	4437019	2.39 ppb
2019-09-26	4437304	2.87 ppb
2019-09-26	4437277	3.72 ppb
2019-09-26	4437425	0.951 ppb
2019-09-26	4436947	0.747 ppb
2019-09-26	4437200	1.28 ppb
2020-01-28	4551580	0.422 ppb