Manganese

Lihue-Kapaa

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	N/A	0	0	N/A
2015	N/A	0	0	N/A
2016	N/A	0	0	N/A
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	0.186 ppb	19	3	ND - 2.40 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
2019-11-18	201911200272	ND
2019-11-18	201911200355	ND
2019-11-18	201911200360	ND
2019-11-18	201911200339	ND
2019-11-18	201911200352	ND
2019-11-18	201911200338	ND
2019-11-18	201911200354	ND
2019-11-20	201911220201	ND
2019-11-20	201911220169	ND
2019-11-20	201911220219	0.510 ppb
2019-11-20	201911220213	ND
2019-11-20	201911220167	ND
2019-11-20	201911220155	ND
2019-11-20	201911220216	0.620 ppb
2019-11-22	201911260186	2.40 ppb
2019-11-22	201911260149	ND
2019-11-22	201911260185	ND
2019-11-22	201911260176	ND
2019-11-22	201911260177	ND
2020-02-18	202002190185	21.0 ppb
2020-05-04	202005050294	ND
2020-05-04	202005050457	ND
2020-05-04	202005050327	ND
2020-05-05	202005060585	ND
2020-05-05	202005060520	ND
2020-05-05	202005060229	0.490 ppb
2020-05-06	202005070108	ND
2020-05-06	202005070395	ND
2020-05-07	202005080203	ND
2020-05-07	202005080197	57.0 ppb
2020-05-18	202005190153	ND
2020-05-18	202005190122	ND
2020-05-20	202005210306	ND
2020-05-20	202005210214	3.20 ppb
2020-05-21	202005220091	ND
2020-05-21	202005220092	ND
2020-05-26	202005280096	ND
2020-05-26	202005280208	ND
2020-05-27	202005280314	ND
2020-05-27	202005280207	ND