Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Manganese

City of Nampa

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

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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
2020-03-1735538127005SEA1ND
2020-03-1735538127009SEA1ND
2020-03-1735538127008SEA12.10 ppb
2020-03-1735538127007SEA1ND
2020-03-1735538127010SEA10.960 ppb
2020-03-1735538127006SEA1ND
2020-03-1735538127011SEA10.780 ppb
2020-03-1735538127012SEA1ND
2020-03-1735538127004SEA120.9 ppb
2020-03-1735538127003SEA131.4 ppb
2020-03-1735538127013SEA111.1 ppb
2020-03-1735538127002SEA1ND
2020-03-1735538127001SEA1ND
2020-09-1435577771006SEA24.60 ppb
2020-09-1435577771008SEA21.60 ppb
2020-09-1435577771005SEA20.730 ppb
2020-09-1435577771007SEA2ND
2020-09-1435577771004SEA2ND
2020-09-1435577771003SEA21.60 ppb
2020-09-1435577771002SEA2ND
2020-09-1435577771001SEA21.20 ppb
2020-09-2335580028002SEA2ND
2020-09-2335580028001SEA2ND
2020-10-0135581876005SEA2ND
2020-10-0135581876004SEA2ND
2020-10-0135581876003SEA2ND
2020-10-0135581876002SEA2ND
2020-10-0135581876001SEA2ND