Manganese

Roswell Municipal Water System

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	N/A	0	0	N/A
2019	0.943 ppb	26	12	ND - 15.0 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
2019-03-11	201903120161	15.0 ppb
2019-03-11	201903120164	ND
2019-03-11	201903120165	0.420 ppb
2019-03-11	201903120157	ND
2019-03-11	201903120163	0.560 ppb
2019-03-11	201903120166	1.50 ppb
2019-03-11	201903120162	0.810 ppb
2019-03-11	201903120167	1.80 ppb
2019-03-11	201903120160	1.20 ppb
2019-03-11	201903120159	ND
2019-03-11	201903120168	1.20 ppb
2019-03-11	201903120158	0.670 ppb
2019-03-18	201903190370	ND
2019-09-09	201909100468	ND
2019-09-09	201909100471	ND
2019-09-09	201909100472	ND
2019-09-09	201909100473	0.440 ppb
2019-09-09	201909100470	ND
2019-09-09	201909100469	ND
2019-09-09	201909100467	ND
2019-09-09	201909100466	0.470 ppb
2019-09-09	201909100465	ND
2019-09-09	201909100464	ND
2019-09-09	201909100463	ND
2019-09-12	201909130153	ND
2019-09-12	201909130154	0.440 ppb