Manganese

Coachella Water Authority

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	Range of results
2014	ND	6	ND
2015	N/A	0	N/A
2016	ND	6	ND
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	ND	6	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
2014-07-31	4790-020-0834	ND
2014-07-31	4790-019-0752	ND
2014-07-31	4790-018-0821	ND
2014-07-31	4790-012-0905	ND
2014-07-31	4790-010-0853	ND
2014-07-31	4790-009-0805	ND
2016-04-26	4790-009-0754	ND
2016-04-26	4790-010-0700	ND
2016-04-26	4790-012-0909	ND
2016-04-27	4790-018-0800	ND
2016-04-27	4790-019-0720	ND
2016-04-27	4790-020-0830	ND
2019-04-22	4790-009-1125	ND
2019-04-22	4790-019-1320	ND
2019-04-22	4790-018-1145	ND
2019-04-22	4790-012-1010	ND
2019-04-22	4790-010-1040	ND
2019-04-22	4790-020-1130	ND
2020-01-13	R9L0071-01	19.0 ppb
2020-01-13	R9L0071-02	0.860 ppb
2020-01-13	R9L0071-06	ND
2020-01-13	R9L0071-03	ND
2020-01-13	R9L0071-04	ND
2020-01-13	R9L0071-05	1.50 ppb
2020-07-14	RDF0053-06	ND
2020-07-14	RDF0053-05	ND
2020-07-14	RDF0053-04	ND
2020-07-14	RDF0053-03	6.40 ppb
2020-07-14	RDF0053-02	ND
2020-07-14	RDF0053-01	3.80 ppb