Manganese

City of Vancouver

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	ND	2	0	ND
2017	N/A	0	0	N/A
2018	0.186 ppb	20	4	ND - 1.40 ppb
2019	ND	10	0	ND

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
2016-11-08		ND
2016-11-08		ND
2018-06-13	201806140918	ND
2018-06-13	201806140919	0.620 ppb
2018-06-13	201806140799	1.000 ppb
2018-06-13	201806140814	ND
2018-06-13	201806140930	ND
2018-06-13	201806140636	ND
2018-06-13	201806140913	ND
2018-06-13	201806141049	ND
2018-06-13	201806140667	ND
2018-06-13	201806141014	ND
2018-12-12	201812130653	ND
2018-12-12	201812130662	ND
2018-12-12	201812130657	1.40 ppb
2018-12-12	201812130661	ND
2018-12-12	201812130660	ND
2018-12-12	201812130659	ND
2018-12-12	201812130658	ND
2018-12-12	201812130656	0.700 ppb
2018-12-12	201812130655	ND
2018-12-12	201812130654	ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND
2019-12-10		ND