Manganese

Town of Gilbert

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
2013	N/A	0	0	N/A
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	1.45 ppb	19	11	ND - 10.00 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
2019-07-10	201907100657	ND
2019-07-10	201907100656	ND
2019-07-11	201907110551	ND
2019-07-15	201907150383	0.510 ppb
2019-07-17	201907170328	10.00 ppb
2019-07-23	201907230380	0.480 ppb
2019-07-23	201907230387	8.50 ppb
2019-07-23	201907230379	ND
2019-07-23	201907230377	0.430 ppb
2019-07-23	201907230378	ND
2019-07-23	201907230381	0.450 ppb
2019-07-25	201907250215	0.870 ppb
2019-07-25	201907250216	ND
2019-07-30	201907300392	0.510 ppb
2019-07-30	201907300394	0.580 ppb
2019-07-30	201907300399	0.580 ppb
2019-07-30	201907300393	ND
2019-10-15	201910150351	ND
2019-10-15	201910150350	4.70 ppb
2020-01-07	202001070507	ND
2020-01-07	202001070501	ND
2020-01-07	202001070500	1.50 ppb
2020-01-07	202001070504	0.510 ppb
2020-01-07	202001070505	0.730 ppb
2020-01-13	202001130157	ND
2020-01-13	202001130159	ND
2020-01-13	202001130155	0.890 ppb
2020-01-13	202001130156	0.430 ppb
2020-01-13	202001130158	0.630 ppb
2020-01-15	202001150255	0.490 ppb
2020-01-15	202001150252	0.490 ppb
2020-01-15	202001150254	1.000 ppb
2020-01-15	202001150251	0.720 ppb
2020-01-15	202001150253	2.40 ppb
2020-01-22	202001220424	7.10 ppb
2020-04-21	202004210276	0.540 ppb
2020-04-21	202004210275	5.70 ppb
2020-08-31	202008310147	2.50 ppb