Manganese

Jordan Valley Water Conservancy District

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	ND	3	0	ND
2016	ND	4	0	ND
2017	ND	2	0	ND
2018	ND	2	0	ND
2019	0.865 ppb	26	10	ND - 4.70 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	Result
2015-01-13	ND
2015-03-30	ND
2015-07-21	ND
2016-02-16	ND
2016-02-25	ND
2016-03-15	ND
2016-04-20	ND
2017-01-18	ND
2017-08-14	ND
2018-01-10	ND
2018-08-21	ND
2019-01-16	ND
2019-05-22	0.560 ppb
2019-05-22	ND
2019-05-22	ND
2019-05-22	ND
2019-05-22	ND
2019-06-06	ND
2019-07-01	0.970 ppb
2019-07-16	ND
2019-07-16	4.10 ppb
2019-07-22	0.430 ppb
2019-08-27	0.750 ppb
2019-08-27	ND
2019-08-27	ND
2019-08-27	ND
2019-11-12	2.60 ppb
2019-11-12	0.670 ppb
2019-11-12	3.30 ppb
2019-11-12	ND
2019-11-12	ND
2019-11-12	ND
2019-11-12	ND
2019-11-13	4.40 ppb
2019-11-13	ND
2019-11-13	4.70 ppb
2019-12-03	ND
2020-02-05	ND
2020-02-05	1.60 ppb
2020-02-05	ND
2020-02-05	ND
2020-02-05	1.50 ppb
2020-03-16	ND
2020-06-01	1.20 ppb
2020-07-22	ND