Manganese

Benton City WSC

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	17.9 ppb	1	1	17.9 ppb
2015	N/A	0	0	N/A
2016	23.1 ppb	3	3	3.30 ppb - 37.2 ppb
2017	16.1 ppb	1	1	16.1 ppb
2018	21.3 ppb	31	19	ND - 94.0 ppb
2019	31.4 ppb	30	22	ND - 77.0 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
2014-05-05	AC52831	17.9 ppb
2016-01-28	AD20622	3.30 ppb
2016-01-28	AD20626	37.2 ppb
2016-01-28	AD20633	28.8 ppb
2017-05-23	AD85388	16.1 ppb
2018-05-25	512899	26.0 ppb
2018-05-25	512897	ND
2018-05-25	512898	94.0 ppb
2018-07-18	518862	ND
2018-07-18	518861	77.0 ppb
2018-07-18	518860	ND
2018-07-18	518863	39.0 ppb
2018-07-18	518864	ND
2018-07-18	518865	ND
2018-07-18	518866	17.0 ppb
2018-07-18	518867	17.0 ppb
2018-07-18	518868	ND
2018-07-30	519957	ND
2018-07-30	519956	ND
2018-07-30	519955	31.0 ppb
2018-07-30	519954	13.0 ppb
2018-07-30	519953	ND
2018-11-07	531990	ND
2018-11-07	531991	56.0 ppb
2018-11-08	531992	55.0 ppb
2018-11-08	531989	13.0 ppb
2018-11-27	534200	14.0 ppb
2018-11-27	534198	38.0 ppb
2018-11-27	534197	10.00 ppb
2018-11-27	534196	13.0 ppb
2018-11-27	534195	66.0 ppb
2018-11-27	534194	ND
2018-11-28	534199	10.00 ppb
2018-11-28	534203	26.0 ppb
2018-11-28	534202	45.0 ppb
2018-11-28	534201	ND
2019-01-30	AE52134	21.3 ppb
2019-01-30	AE52130	73.9 ppb
2019-02-12	542866	25.0 ppb
2019-02-12	542869	76.0 ppb
2019-02-13	542868	36.0 ppb
2019-02-13	542867	27.0 ppb
2019-02-18	543470	73.0 ppb
2019-02-18	543469	ND
2019-02-18	543471	12.0 ppb
2019-02-19	543472	55.0 ppb
2019-02-19	543473	ND
2019-03-11	545709	ND
2019-03-11	545708	58.0 ppb
2019-03-12	545711	68.0 ppb
2019-03-12	545710	49.0 ppb
2019-03-12	545712	11.0 ppb
2019-05-09	552946	43.0 ppb
2019-05-09	552951	ND
2019-05-09	552952	18.0 ppb
2019-05-09	552944	14.0 ppb
2019-05-09	552950	46.0 ppb
2019-05-09	552949	ND
2019-05-09	552948	ND
2019-05-09	552945	42.0 ppb
2019-05-09	552947	71.0 ppb
2019-05-15	553658	ND
2019-05-15	553655	23.0 ppb
2019-05-15	553654	23.0 ppb
2019-05-15	553657	ND
2019-05-15	553656	77.0 ppb
2020-03-13	35537843001SEA1	22.9 ppb
2020-03-13	35537843002SEA1	27.2 ppb
2020-03-13	35537843003SEA1	41.4 ppb
2020-03-13	35537843004SEA1	98.0 ppb
2020-09-08	35576746001SEA2	12.0 ppb
2020-09-08	35576746002SEA2	23.4 ppb
2020-09-08	35576746003SEA2	59.7 ppb
2020-09-08	35576746004SEA2	85.6 ppb