Manganese

Fort Sam Houston

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	ND	1	0	ND
2015	N/A	0	0	N/A
2016	ND	1	0	ND
2017	0.750 ppb	2	1	ND - 1.50 ppb
2018	6.60 ppb	62	7	ND - 244.0 ppb
2019	7.48 ppb	29	3	ND - 152.0 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
2014-02-06	AC41713	ND
2016-12-15	AD62356	ND
2017-01-30	AD67451	1.50 ppb
2017-04-24	AD80584	ND
2018-03-14	Q1810547003	1.000 ppb
2018-03-14	Q1810547002	ND
2018-03-14	Q1810547001	ND
2018-03-21	1803331-09	ND
2018-03-21	1803331-01	ND
2018-03-21	1803331-02	ND
2018-03-21	1803331-03	ND
2018-03-21	1803331-04	ND
2018-03-21	1803331-05	ND
2018-03-21	1803331-06	ND
2018-03-21	1803331-07	ND
2018-03-21	1803331-08	ND
2018-03-21	1803331-10	ND
2018-03-21	1803331-11	ND
2018-03-21	1803331-12	ND
2018-03-21	1803331-14	ND
2018-03-21	1803331-13	ND
2018-05-02	1805029-14	ND
2018-05-02	1805029-04	ND
2018-05-02	1805029-03	ND
2018-05-02	1805029-05	ND
2018-05-02	1805029-06	ND
2018-05-02	1805029-07	ND
2018-05-02	1805029-08	ND
2018-05-02	1805029-02	ND
2018-05-02	1805029-10	ND
2018-05-02	1805029-12	ND
2018-05-02	1805029-13	ND
2018-05-02	1805029-11	ND
2018-05-02	1805029-01	ND
2018-05-02	1805029-09	ND
2018-08-22	1808358-06	ND
2018-08-22	1808358-07	ND
2018-08-22	1808358-08	ND
2018-08-22	1808358-09	ND
2018-08-22	1808358-10	ND
2018-08-22	1808358-11	ND
2018-08-22	1808358-12	ND
2018-08-22	1808358-13	244.0 ppb
2018-08-22	1808358-14	ND
2018-08-22	1808358-05	ND
2018-08-22	1808358-04	ND
2018-08-22	1808358-03	24.0 ppb
2018-08-22	1808358-02	51.0 ppb
2018-08-22	1808358-01	ND
2018-09-12	Q1836297002	4.60 ppb
2018-09-12	Q1836297001	ND
2018-09-12	Q1836297003	1.90 ppb
2018-11-27	1811392-05	ND
2018-11-27	1811392-02	83.0 ppb
2018-11-27	1811392-03	ND
2018-11-27	1811392-04	ND
2018-11-27	1811392-06	ND
2018-11-27	1811392-07	ND
2018-11-27	1811392-08	ND
2018-11-27	1811392-14	ND
2018-11-27	1811392-13	ND
2018-11-27	1811392-12	ND
2018-11-27	1811392-11	ND
2018-11-27	1811392-10	ND
2018-11-27	1811392-09	ND
2018-11-27	1811392-01	ND
2019-01-24	AE51153	ND
2019-03-07	1903115-07	23.0 ppb
2019-03-07	1903115-08	ND
2019-03-07	1903115-09	ND
2019-03-07	1903115-10	ND
2019-03-07	1903115-11	ND
2019-03-07	1903115-12	ND
2019-03-07	1903115-13	ND
2019-03-07	1903115-01	ND
2019-03-07	1903115-02	152.0 ppb
2019-03-07	1903115-03	42.0 ppb
2019-03-07	1903115-04	ND
2019-03-07	1903115-05	ND
2019-03-07	1903115-06	ND
2019-03-07	1903115-14	ND
2019-05-23	1905363-13	ND
2019-05-23	1905363-12	ND
2019-05-23	1905363-11	ND
2019-05-23	1905363-10	ND
2019-05-23	1905363-09	ND
2019-05-23	1905363-08	ND
2019-05-23	1905363-06	ND
2019-05-23	1905363-14	ND
2019-05-23	1905363-01	ND
2019-05-23	1905363-02	ND
2019-05-23	1905363-03	ND
2019-05-23	1905363-04	ND
2019-05-23	1905363-05	ND
2019-05-23	1905363-07	ND