Manganese

Hamilton Township MUA

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	12.7 ppb	6	6	0.400 ppb - 30.4 ppb
2015	6.60 ppb	1	1	6.60 ppb
2016	12.2 ppb	1	1	12.2 ppb
2017	13.8 ppb	6	4	ND - 30.2 ppb
2018	ND	2	0	ND
2019	16.1 ppb	6	6	3.13 ppb - 27.9 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
2014-01-13	L4897624-14	2.20 ppb
2014-01-13	L4897625-1	0.700 ppb
2014-01-13	L4897624-2	30.4 ppb
2014-01-13	L4897624-5	21.7 ppb
2014-01-13	L4897624-8	20.6 ppb
2014-01-13	L4897624-11	0.400 ppb
2015-01-20	L5415429-1	6.60 ppb
2016-01-19	9657	12.2 ppb
2017-01-17	15228	ND
2017-04-17	L6765056-2	30.2 ppb
2017-04-17	L6765056-5	22.0 ppb
2017-04-17	L6765056-8	25.0 ppb
2017-04-17	L6765056-11	5.50 ppb
2017-04-17	L6765056-14	ND
2018-01-16	21482	ND
2018-06-18	24075	ND
2019-01-14	27994	9.70 ppb
2019-07-16	4356549	6.87 ppb
2019-07-16	4356543	27.9 ppb
2019-07-16	4356773	24.2 ppb
2019-07-16	4356640	24.5 ppb
2019-07-17	4356662	3.13 ppb
2020-01-07	4534039	1.67 ppb
2020-01-07	4533796	28.8 ppb
2020-01-08	4533083	1.24 ppb
2020-01-15	4541681	19.7 ppb
2020-01-16	4541702	26.6 ppb