Manganese in Drinking Water
EPA Limit (MCL)
No federal limit
EPA Goal (MCLG)
N/A
Status
Unregulated
Health Effects
While manganese is an essential nutrient in small amounts, excessive levels in drinking water may cause neurological effects, especially in infants and children. High levels can affect learning and behavior.
How Manganese Gets Into Water
Naturally occurring mineral widely found in rocks, soil, and groundwater. Levels vary by geology. Can also enter water from industrial discharges and mining.
How to Remove Manganese
Oxidation followed by filtration, water softeners (ion exchange), and reverse osmosis can all reduce manganese levels.
Recommended: Reverse Osmosis or Ion Exchange
RO systems or specialized ion exchange filters can reduce nitrates, arsenic, and other inorganic contaminants.
Up to 95% removal depending on contaminant
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