Manganese

Greenlawn WD

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
2013	N/A	0	0	N/A
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	0.920 ppb	12	6	ND - 5.50 ppb
2019	3.28 ppb	12	12	0.450 ppb - 8.60 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
2018-07-30	7059797018SEA1	2.00 ppb
2018-07-30	7059797019SEA1	0.760 ppb
2018-07-30	7059797029SEA1	0.480 ppb
2018-07-30	7059797020SEA1	ND
2018-07-30	7059797021SEA1	1.20 ppb
2018-07-30	7059797028SEA1	ND
2018-07-30	7059797022SEA1	ND
2018-07-30	7059797023SEA1	ND
2018-07-30	7059797027SEA1	ND
2018-07-30	7059797024SEA1	ND
2018-07-30	7059797025SEA1	1.10 ppb
2018-07-30	7059797026SEA1	5.50 ppb
2019-01-29	7077821029SEA2	4.60 ppb
2019-01-29	7077821028SEA2	5.50 ppb
2019-01-29	7077821027SEA2	0.800 ppb
2019-01-29	7077821026SEA2	3.00 ppb
2019-01-29	7077821025SEA2	3.10 ppb
2019-01-29	7077821024SEA2	0.560 ppb
2019-01-29	7077821023SEA2	1.10 ppb
2019-01-29	7077821022SEA2	3.30 ppb
2019-01-29	7077821021SEA2	3.40 ppb
2019-01-29	7077821020SEA2	0.450 ppb
2019-01-29	7077821019SEA2	5.00 ppb
2019-01-29	7077821018SEA2	8.60 ppb