Manganese

Spanaway Water Company

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	N/A	0	0	N/A
2015	5.00 ppb	2	1	ND - 10.00 ppb
2016	173.3 ppb	3	2	ND - 260.0 ppb
2017	N/A	0	0	N/A
2018	8.44 ppb	9	3	ND - 53.0 ppb
2019	38.8 ppb	12	8	ND - 150.0 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
2015-05-19	56898	ND
2015-05-19	56897	10.00 ppb
2016-07-27		260.0 ppb
2016-07-27		260.0 ppb
2016-08-22		ND
2018-07-11		ND
2018-07-11		ND
2018-07-11		12.0 ppb
2018-07-11		ND
2018-07-11		11.0 ppb
2018-07-11		ND
2018-07-11		53.0 ppb
2018-09-11		ND
2018-09-11		ND
2019-06-05		ND
2019-06-05		ND
2019-06-06		150.0 ppb
2019-08-22		126.0 ppb
2019-12-03	08987477U	44.8 ppb
2019-12-03	08987479U	6.50 ppb
2019-12-03	08987478U	ND
2019-12-04	08987480U	99.3 ppb
2019-12-10	08987494U	7.20 ppb
2019-12-10	08987491U	ND
2019-12-10	08987493U	0.500 ppb
2019-12-10	08987492U	30.8 ppb
2020-05-15	08987570U	2.00 ppb
2020-06-02	08987587U	ND
2020-06-02	08987586U	139.1 ppb
2020-06-02	08987588U	30.9 ppb
2020-06-02	08987585U	5.80 ppb
2020-06-03	08987591U	ND
2020-06-03	08987576U	ND
2020-06-03	08987592U	1.80 ppb
2020-06-03	08987575U	37.8 ppb
2020-11-12	08987640U	0.400 ppb