Manganese

Westfield Water Department

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

137

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	ND	18	0	ND
2015	2.64 ppb	25	5	ND - 43.3 ppb
2016	9.10 ppb	34	9	ND - 184.0 ppb
2017	5.80 ppb	20	7	ND - 33.6 ppb
2018	1.000 ppb	12	3	ND - 9.00 ppb
2019	6.76 ppb	22	13	ND - 61.9 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
2014-03-06	ND
2014-03-06	ND
2014-03-06	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2014-05-21	ND
2015-06-02	7.30 ppb
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	4.70 ppb
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	43.3 ppb
2015-06-02	4.80 ppb
2015-06-02	5.80 ppb
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2015-06-02	ND
2016-05-25	184.0 ppb
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	7.30 ppb
2016-05-25	44.8 ppb
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	4.20 ppb
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	5.00 ppb
2016-05-25	5.00 ppb
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-05-25	ND
2016-06-03	ND
2016-09-28	ND
2016-09-28	ND
2016-09-28	19.2 ppb
2016-09-28	ND
2016-11-30	ND
2016-11-30	ND
2016-11-30	16.0 ppb
2016-11-30	23.8 ppb
2017-03-22	ND
2017-03-22	ND
2017-03-22	33.6 ppb
2017-03-22	ND
2017-05-24	ND
2017-05-24	ND
2017-05-24	16.6 ppb
2017-05-24	ND
2017-05-24	27.8 ppb
2017-05-24	16.4 ppb
2017-05-24	6.20 ppb
2017-05-24	10.5 ppb
2017-05-24	4.80 ppb
2017-05-24	ND
2017-05-24	ND
2017-05-24	ND
2017-05-24	ND
2017-05-24	ND
2017-05-24	ND
2017-06-21	ND
2018-05-14	ND
2018-05-14	ND
2018-05-14	9.00 ppb
2018-05-14	1.000 ppb
2018-05-14	ND
2018-05-14	ND
2018-05-14	ND
2018-05-14	ND
2018-05-14	ND
2018-05-14	ND
2018-05-14	2.00 ppb
2018-05-14	ND
2019-05-15	21.1 ppb
2019-05-15	2.70 ppb
2019-05-15	2.90 ppb
2019-05-15	21.6 ppb
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	ND
2019-05-15	2.80 ppb
2019-05-15	2.90 ppb
2019-09-25	16.8 ppb
2019-09-25	1.36 ppb
2019-09-25	ND
2019-09-25	ND
2019-09-25	1.81 ppb
2019-09-25	1.01 ppb
2019-10-23	8.00 ppb
2019-10-23	ND
2019-10-23	3.90 ppb
2019-10-23	ND
2019-10-23	ND
2019-12-05	61.9 ppb
2020-03-25	2.87 ppb
2020-03-25	0.416 ppb
2020-03-25	ND
2020-03-25	4.15 ppb
2020-03-25	1.19 ppb
2020-06-17	43.0 ppb