Manganese

Lebanon

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	19.5 ppb	13	7	ND - 145.0 ppb
2017	2.03 ppb	4	3	ND - 4.25 ppb
2018	1.33 ppb	1	1	1.33 ppb
2019	5.73 ppb	10	8	ND - 43.1 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
2016-02-29	AC66566	ND
2016-02-29	AC66563	ND
2016-02-29	AC66567	32.8 ppb
2016-02-29	AC66565	ND
2016-02-29	AC66564	ND
2016-02-29	AC66569	145.0 ppb
2016-02-29	AC66568	ND
2016-03-25	AC69033	7.32 ppb
2016-03-25	AC69046	2.82 ppb
2016-04-04	AC70292	61.9 ppb
2016-04-04	AC70293	2.35 ppb
2016-08-02	AC80038	ND
2016-10-12	AC85441	1.13 ppb
2017-01-30	AC89314	4.25 ppb
2017-04-17	AC94652	ND
2017-07-18	AD01718	1.75 ppb
2017-10-24	AD08055	2.13 ppb
2018-05-08	AD18222	1.33 ppb
2019-01-28	35444935001SEA1	1.000 ppb
2019-01-28	35444935002SEA1	6.80 ppb
2019-03-04	AD39580	ND
2019-03-04	AD39581	1.02 ppb
2019-03-04	AD39582	1.04 ppb
2019-03-04	AD39583	1.50 ppb
2019-03-04	AD39584	ND
2019-03-04	AD39585	1.44 ppb
2019-07-16	35483095001SEA2	43.1 ppb
2019-07-16	35483095002SEA2	1.40 ppb