Manganese

City of San Diego

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

226

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	36	0	ND
2015	ND	36	0	ND
2016	ND	35	0	ND
2017	2.71 ppb	34	3	ND - 41.1 ppb
2018	1.90 ppb	51	10	ND - 41.0 ppb
2019	ND	34	0	ND

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
2014-01-06	9437-001-0000	ND
2014-01-06	9437-006-0000	ND
2014-01-06	9437-010-0000	ND
2014-02-03	9437-001-0000	ND
2014-02-03	9437-006-0000	ND
2014-02-03	9437-010-0000	ND
2014-03-03	9437-001-0000	ND
2014-03-03	9437-006-0000	ND
2014-03-04	9437-010-0000	ND
2014-04-07	9437-001-0000	ND
2014-04-07	9437-006-0000	ND
2014-04-07	9437-010-0000	ND
2014-05-05	9437-001-0000	ND
2014-05-05	9437-006-0000	ND
2014-05-05	9437-010-0000	ND
2014-06-02	9437-001-0000	ND
2014-06-02	9437-006-0000	ND
2014-06-02	9437-010-0000	ND
2014-07-07	9437-001-0000	ND
2014-07-07	9437-006-0000	ND
2014-07-07	9437-010-0000	ND
2014-08-04	9437-001-0000	ND
2014-08-04	9437-006-0000	ND
2014-08-04	9437-010-0000	ND
2014-09-02	9437-001-0000	ND
2014-09-02	9437-006-0000	ND
2014-09-02	9437-010-0000	ND
2014-10-06	9437-001-0000	ND
2014-10-06	9437-006-0000	ND
2014-10-06	9437-010-0000	ND
2014-11-03	9437-001-0000	ND
2014-11-03	9437-006-0000	ND
2014-11-03	9437-010-0000	ND
2014-12-01	9437-001-0000	ND
2014-12-01	9437-010-0000	ND
2014-12-08	9437-006-0000	ND
2015-01-05	9437-001-0000	ND
2015-01-05	9437-006-0000	ND
2015-01-05	9437-010-0000	ND
2015-02-02	9437-001-0000	ND
2015-02-02	9437-006-0000	ND
2015-02-02	9437-010-0000	ND
2015-03-02	9437-001-0000	ND
2015-03-02	9437-010-0000	ND
2015-03-17	9437-006-0000	ND
2015-04-06	9437-001-0000	ND
2015-04-06	9437-006-0000	ND
2015-04-06	9437-010-0000	ND
2015-05-04	9437-001-0000	ND
2015-05-04	9437-006-0000	ND
2015-05-04	9437-010-0000	ND
2015-06-01	9437-001-0000	ND
2015-06-01	9437-006-0000	ND
2015-06-01	9437-010-0000	ND
2015-07-06	9437-001-0000	ND
2015-07-06	9437-006-0000	ND
2015-07-06	9437-010-0000	ND
2015-08-03	9437-001-0000	ND
2015-08-03	9437-006-0000	ND
2015-08-03	9437-010-0000	ND
2015-09-09	9437-001-0000	ND
2015-09-09	9437-006-0000	ND
2015-09-09	9437-010-0000	ND
2015-10-05	9437-001-0000	ND
2015-10-05	9437-010-0000	ND
2015-10-06	9437-006-0000	ND
2015-11-02	9437-001-0000	ND
2015-11-02	9437-006-0000	ND
2015-11-02	9437-010-0000	ND
2015-12-07	9437-001-0000	ND
2015-12-07	9437-006-0000	ND
2015-12-07	9437-010-0000	ND
2016-01-04	9437-001-0000	ND
2016-01-04	9437-006-0000	ND
2016-01-04	9437-010-0000	ND
2016-02-01	9437-001-0000	ND
2016-02-01	9437-006-0000	ND
2016-02-01	9437-010-0000	ND
2016-03-07	9437-001-0000	ND
2016-03-07	9437-006-0000	ND
2016-03-07	9437-010-0000	ND
2016-04-04	9437-001-0000	ND
2016-04-04	9437-006-0000	ND
2016-04-04	9437-010-0000	ND
2016-05-02	9437-001-0000	ND
2016-05-02	9437-010-0000	ND
2016-06-06	9437-001-0000	ND
2016-06-06	9437-006-0000	ND
2016-06-06	9437-010-0000	ND
2016-07-06	9437-001-0000	ND
2016-07-06	9437-006-0000	ND
2016-07-06	9437-010-0000	ND
2016-08-01	9437-001-0000	ND
2016-08-01	9437-006-0000	ND
2016-08-01	9437-010-0000	ND
2016-09-12	9437-001-0000	ND
2016-09-12	9437-006-0000	ND
2016-09-12	9437-010-0000	ND
2016-10-03	9437-001-0000	ND
2016-10-03	9437-006-0000	ND
2016-10-03	9437-010-0000	ND
2016-11-07	9437-001-0000	ND
2016-11-07	9437-006-0000	ND
2016-11-07	9437-010-0000	ND
2016-12-05	9437-001-0000	ND
2016-12-05	9437-006-0000	ND
2016-12-05	9437-010-0000	ND
2017-01-03	9437-001-0000	ND
2017-01-03	9437-006-0000	ND
2017-02-06	9437-001-0000	ND
2017-02-06	9437-006-0000	ND
2017-02-22	9437-010-0000	ND
2017-03-06	9437-001-0000	ND
2017-03-06	9437-006-0000	ND
2017-03-06	9437-010-0000	ND
2017-04-03	9437-001-0000	ND
2017-04-03	9437-006-0000	ND
2017-04-03	9437-010-0000	ND
2017-05-01	9437-001-0000	ND
2017-05-01	9437-010-0000	ND
2017-06-05	9437-001-0000	28.4 ppb
2017-06-05	9437-006-0000	ND
2017-06-05	9437-010-0000	ND
2017-07-10	9437-001-0000	41.1 ppb
2017-07-10	9437-006-0000	ND
2017-07-10	9437-010-0000	ND
2017-08-07	9437-001-0000	ND
2017-08-07	9437-006-0000	ND
2017-08-07	9437-010-0000	ND
2017-09-11	9437-001-0000	ND
2017-09-11	9437-006-0000	ND
2017-09-11	9437-010-0000	ND
2017-10-02	9437-001-0000	ND
2017-10-02	9437-006-0000	ND
2017-10-02	9437-010-0000	22.7 ppb
2017-11-06	9437-001-0000	ND
2017-11-06	9437-006-0000	ND
2017-11-06	9437-010-0000	ND
2017-12-04	9437-001-0000	ND
2017-12-04	9437-006-0000	ND
2017-12-04	9437-010-0000	ND
2018-01-08	9437-001-0000	ND
2018-01-08	9437-006-0000	ND
2018-01-08	9437-010-0000	ND
2018-01-24	9437-030-0000	ND
2018-02-05	9437-001-0000	ND
2018-02-05	9437-006-0000	ND
2018-02-05	9437-010-0000	ND
2018-02-12	B8B0982-01_EPA 2	0.560 ppb
2018-02-13	B8B1325-01_EPA 2	ND
2018-02-13	B8B1325-02_EPA 2	0.650 ppb
2018-03-05	9437-001-0000	ND
2018-03-05	9437-006-0000	ND
2018-03-05	9437-010-0000	ND
2018-04-02	9437-001-0000	ND
2018-04-02	9437-006-0000	ND
2018-04-02	9437-010-0000	ND
2018-05-07	9437-001-0000	ND
2018-05-07	9437-006-0000	ND
2018-05-07	9437-010-0000	ND
2018-05-08	B8E1365-01	1.20 ppb
2018-05-08	B8E1365-02	ND
2018-05-08	B8E1365-03	ND
2018-05-09	9437-030-0000	20.8 ppb
2018-06-04	9437-001-0000	ND
2018-06-04	9437-006-0000	ND
2018-06-04	9437-010-0000	41.0 ppb
2018-07-02	9437-001-0000	ND
2018-07-02	9437-006-0000	ND
2018-07-02	9437-010-0000	ND
2018-08-06	9437-001-0000	ND
2018-08-06	9437-006-0000	ND
2018-08-06	9437-010-0000	ND
2018-08-14	B8H2022-01	1.20 ppb
2018-08-14	B8H2022-03	8.20 ppb
2018-08-14	B8H2022-04	ND
2018-09-04	9437-001-0000	ND
2018-09-04	9437-006-0000	ND
2018-09-04	9437-010-0000	ND
2018-09-05	9437-030-0000	22.4 ppb
2018-10-01	9437-001-0000	ND
2018-10-01	9437-006-0000	ND
2018-10-01	9437-010-0000	ND
2018-11-05	9437-001-0000	ND
2018-11-05	9437-006-0000	ND
2018-11-13	B8K1605-01	0.650 ppb
2018-11-13	B8K1605-02	0.400 ppb
2018-11-20	B8K2463-01	ND
2018-11-30	9437-010-0000	ND
2018-12-03	9437-001-0000	ND
2018-12-03	9437-006-0000	ND
2018-12-03	9437-010-0000	ND
2019-01-07	9437-001-0000	ND
2019-01-07	9437-006-0000	ND
2019-01-16	9437-010-0000	ND
2019-02-04	9437-001-0000	ND
2019-02-04	9437-010-0000	ND
2019-02-06	9437-006-0000	ND
2019-03-04	9437-001-0000	ND
2019-03-04	9437-010-0000	ND
2019-03-19	9437-006-0000	ND
2019-04-02	9437-001-0000	ND
2019-04-02	9437-006-0000	ND
2019-04-02	9437-010-0000	ND
2019-05-06	9437-001-0000	ND
2019-05-06	9437-010-0000	ND
2019-06-03	9437-001-0000	ND
2019-06-03	9437-006-0000	ND
2019-06-03	9437-010-0000	ND
2019-07-01	9437-001-0000	ND
2019-07-01	9437-006-0000	ND
2019-07-01	9437-010-0000	ND
2019-08-05	9437-001-0000	ND
2019-08-05	9437-010-0000	ND
2019-09-03	9437-001-0000	ND
2019-09-03	9437-006-0000	ND
2019-09-03	9437-010-0000	ND
2019-10-07	9437-001-0000	ND
2019-10-07	9437-006-0000	ND
2019-10-07	9437-010-0000	ND
2019-11-04	9437-001-0000	ND
2019-11-04	9437-006-0000	ND
2019-11-04	9437-010-0000	ND
2019-12-02	9437-001-0000	ND
2019-12-02	9437-006-0000	ND
2019-12-02	9437-010-0000	ND