Manganese

Scituate Water Division

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

135

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	176.9 ppb	15	13	ND - 383.0 ppb
2015	177.6 ppb	36	29	ND - 514.0 ppb
2016	172.7 ppb	22	19	ND - 362.0 ppb
2017	173.4 ppb	28	25	ND - 545.0 ppb
2018	148.9 ppb	15	13	ND - 791.0 ppb
2019	53.1 ppb	19	16	ND - 413.0 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	Result
2014-02-21	383.0 ppb
2014-05-31	55.0 ppb
2014-05-31	ND
2014-05-31	257.0 ppb
2014-05-31	257.0 ppb
2014-05-31	63.0 ppb
2014-05-31	63.0 ppb
2014-08-08	218.0 ppb
2014-08-08	218.0 ppb
2014-12-02	290.0 ppb
2014-12-22	58.0 ppb
2014-12-22	ND
2014-12-22	373.0 ppb
2014-12-22	373.0 ppb
2014-12-22	46.0 ppb
2015-03-03	459.0 ppb
2015-03-03	459.0 ppb
2015-03-16	133.0 ppb
2015-03-16	133.0 ppb
2015-03-16	474.0 ppb
2015-03-16	474.0 ppb
2015-03-16	99.0 ppb
2015-03-16	99.0 ppb
2015-05-12	79.0 ppb
2015-05-12	79.0 ppb
2015-05-12	514.0 ppb
2015-05-12	514.0 ppb
2015-05-12	115.0 ppb
2015-05-12	155.0 ppb
2015-07-14	222.0 ppb
2015-07-14	310.0 ppb
2015-07-14	86.0 ppb
2015-10-27	49.0 ppb
2015-10-27	49.0 ppb
2015-10-27	313.0 ppb
2015-10-27	313.0 ppb
2015-10-27	ND
2015-10-27	ND
2015-11-24	250.0 ppb
2015-12-01	253.0 ppb
2015-12-22	39.0 ppb
2015-12-22	ND
2015-12-22	ND
2015-12-22	48.0 ppb
2015-12-22	49.0 ppb
2015-12-22	49.0 ppb
2015-12-22	ND
2015-12-22	ND
2015-12-22	288.0 ppb
2015-12-22	288.0 ppb
2015-12-22	ND
2016-02-02	51.0 ppb
2016-02-02	301.0 ppb
2016-02-19	ND
2016-02-19	ND
2016-03-08	76.0 ppb
2016-03-08	362.0 ppb
2016-05-02	332.0 ppb
2016-06-07	294.0 ppb
2016-07-13	329.0 ppb
2016-08-08	52.0 ppb
2016-08-08	25.0 ppb
2016-08-08	44.0 ppb
2016-08-08	272.0 ppb
2016-09-06	223.0 ppb
2016-10-13	134.0 ppb
2016-10-25	265.0 ppb
2016-11-17	ND
2016-11-17	327.0 ppb
2016-11-17	338.0 ppb
2016-11-17	32.0 ppb
2016-12-05	25.0 ppb
2016-12-06	318.0 ppb
2017-01-10	243.0 ppb
2017-02-22	288.0 ppb
2017-03-21	473.0 ppb
2017-04-18	511.0 ppb
2017-05-09	512.0 ppb
2017-06-13	129.0 ppb
2017-06-13	ND
2017-06-13	545.0 ppb
2017-06-13	64.0 ppb
2017-07-13	517.0 ppb
2017-08-22	125.0 ppb
2017-10-17	15.0 ppb
2017-10-17	213.0 ppb
2017-11-09	28.0 ppb
2017-11-09	32.0 ppb
2017-11-09	11.0 ppb
2017-11-09	42.0 ppb
2017-11-09	14.0 ppb
2017-11-09	25.0 ppb
2017-11-09	ND
2017-11-09	20.0 ppb
2017-11-09	70.0 ppb
2017-11-09	63.0 ppb
2017-11-09	34.0 ppb
2017-11-09	ND
2017-11-09	415.0 ppb
2017-11-09	415.0 ppb
2017-11-09	50.0 ppb
2018-01-23	351.0 ppb
2018-04-24	42.0 ppb
2018-06-19	738.0 ppb
2018-09-20	791.0 ppb
2018-12-11	18.0 ppb
2018-12-11	ND
2018-12-11	16.0 ppb
2018-12-11	11.0 ppb
2018-12-11	95.0 ppb
2018-12-11	28.0 ppb
2018-12-11	ND
2018-12-11	34.0 ppb
2018-12-20	1.97 ppb
2018-12-20	78.6 ppb
2018-12-20	29.5 ppb
2019-03-05	9.00 ppb
2019-03-19	14.0 ppb
2019-03-19	ND
2019-04-03	14.0 ppb
2019-04-25	67.8 ppb
2019-06-20	13.0 ppb
2019-06-20	413.0 ppb
2019-06-20	34.2 ppb
2019-07-16	90.0 ppb
2019-07-16	65.0 ppb
2019-07-16	102.0 ppb
2019-07-16	29.0 ppb
2019-07-16	31.0 ppb
2019-07-16	33.0 ppb
2019-09-23	38.4 ppb
2019-09-24	ND
2019-12-17	36.0 ppb
2019-12-17	ND
2019-12-17	19.0 ppb