Manganese

Golden State Water Company - Cordova

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

117

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	1.59 ppb	17	1	ND - 27.0 ppb
2015	ND	12	0	ND
2016	ND	11	0	ND
2017	ND	11	0	ND
2018	22.9 ppb	32	19	ND - 92.0 ppb
2019	45.3 ppb	34	27	ND - 360.0 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
2014-01-14	2706-008-1050	ND
2014-01-14	2706-010-1140	ND
2014-01-14	2706-019-1020	ND
2014-01-14	2706-025-0855	ND
2014-01-14	2706-028-0920	ND
2014-01-14	2706-029-1305	27.0 ppb
2014-01-14	2706-030-0945	ND
2014-01-14	2706-051-1210	ND
2014-02-18	2706-025-1315	ND
2014-03-04	2706-025-0905	ND
2014-04-02	2706-025-1245	ND
2014-05-13	2706-025-1400	ND
2014-06-03	2706-025-0845	ND
2014-07-15	2706-025-1110	ND
2014-10-14	2706-025-1110	ND
2014-11-18	2706-025-0825	ND
2014-12-09	2706-025-0845	ND
2015-01-13	2706-025-0945	ND
2015-02-03	2706-025-0845	ND
2015-03-03	2706-025-0840	ND
2015-04-08	2706-025-1115	ND
2015-05-05	2706-025-0905	ND
2015-06-02	2706-025-0915	ND
2015-07-07	2706-025-0920	ND
2015-08-04	2706-025-0915	ND
2015-09-01	2706-025-0920	ND
2015-10-06	2706-025-0935	ND
2015-11-03	2706-025-0925	ND
2015-12-08	2706-025-0920	ND
2016-01-26	2706-025-1015	ND
2016-02-02	2706-025-0930	ND
2016-03-08	2706-025-0920	ND
2016-04-05	2706-025-0915	ND
2016-05-03	2706-025-0916	ND
2016-06-07	2706-025-0910	ND
2016-07-05	2706-025-0930	ND
2016-08-02	2706-025-0920	ND
2016-09-13	2706-025-0850	ND
2016-10-04	2706-025-0930	ND
2016-11-08	2706-025-0850	ND
2017-02-21	9590-008-1259	ND
2017-02-23	9590-019-1031	ND
2017-02-23	9590-028-0859	ND
2017-02-23	9590-030-0949	ND
2017-02-28	9590-051-1057	ND
2017-05-05	9590-010-1405	ND
2017-07-11	9590-025-0913	ND
2017-08-01	9590-025-0857	ND
2017-08-08	9590-025-1400	ND
2017-09-26	9590-025-1040	ND
2017-10-03	9590-025-0932	ND
2018-05-08	9590-025-0753	ND
2018-06-05	9590-025-0817	ND
2018-07-17	9590-025-0807	ND
2018-08-07	9590-025-0858	ND
2018-08-14	201808151190	1.40 ppb
2018-08-14	201808160636	0.800 ppb
2018-08-14	201808151165	ND
2018-08-14	201808160011	ND
2018-08-14	201808151205	ND
2018-08-14	201808151167	ND
2018-08-14	201808160642	92.0 ppb
2018-08-14	201808160652	ND
2018-08-14	201808160016	ND
2018-08-21	9590-029-1048	85.0 ppb
2018-09-02	9590-029-1317	83.0 ppb
2018-09-03	9590-029-1318	84.0 ppb
2018-10-04	9590-025-0908	ND
2018-10-09	9590-029-0924	46.0 ppb
2018-10-16	9590-029-1250	38.0 ppb
2018-10-23	9590-029-1008	34.0 ppb
2018-10-30	9590-029-1456	31.0 ppb
2018-11-06	9590-025-0901	ND
2018-11-06	9590-029-1041	31.0 ppb
2018-11-13	9590-029-1355	31.0 ppb
2018-11-15	201811160444	2.10 ppb
2018-11-20	9590-029-1135	28.0 ppb
2018-11-27	9590-029-0823	29.0 ppb
2018-11-28	201811300201	ND
2018-12-04	9590-029-1223	29.0 ppb
2018-12-11	9590-029-1002	29.0 ppb
2018-12-18	9590-029-1150	30.0 ppb
2018-12-26	9590-029-1254	29.0 ppb
2019-01-02	9590-029-1121	36.0 ppb
2019-01-08	9590-029-1046	30.0 ppb
2019-01-10	9590-029-1009	28.0 ppb
2019-01-15	9590-029-0928	28.0 ppb
2019-01-29	9590-029-0900	360.0 ppb
2019-01-29	9590-029-0925	47.0 ppb
2019-02-19	201902200376	ND
2019-02-22	201902260146	0.600 ppb
2019-02-22	201902260172	ND
2019-02-22	201902260186	2.60 ppb
2019-02-26	201902270233	ND
2019-02-26	201902270134	0.460 ppb
2019-02-27	201902280128	0.800 ppb
2019-03-05	9590-029-1319	55.0 ppb
2019-03-12	9590-029-1103	57.0 ppb
2019-03-19	9590-029-1115	55.0 ppb
2019-04-02	9590-029-0917	62.0 ppb
2019-04-09	9590-029-1047	76.0 ppb
2019-04-16	9590-029-0829	59.0 ppb
2019-04-23	9590-029-1048	70.0 ppb
2019-04-30	9590-029-1054	64.0 ppb
2019-05-07	9590-029-1041	61.0 ppb
2019-05-14	9590-029-0921	54.0 ppb
2019-05-21	9590-029-1018	50.0 ppb
2019-05-28	9590-029-1331	52.0 ppb
2019-06-04	9590-029-1328	54.0 ppb
2019-06-11	9590-029-1103	54.0 ppb
2019-06-18	9590-029-0949	64.0 ppb
2019-06-25	9590-029-1048	62.0 ppb
2019-07-02	9590-029-1052	58.0 ppb
2019-07-23	5810-025-1200	ND
2019-08-06	9590-025-0905	ND
2019-09-17	9590-025-0744	ND
2019-10-01	9590-025-0909	ND