Manganese in Drinking Water: Health Risks, Sources, and How to Remove It
Manganese is an inorganic contaminant that can be found in drinking water. The EPA Maximum Contaminant Level (MCL) for this contaminant is set at 50 μg/L. Keeping concentrations below this limit helps protect water quality.
Health Effects
Elevated manganese levels can cause aesthetic issues, including black staining on household fixtures and laundry. Exposure to high levels of this contaminant can also lead to neurological effects.
How Manganese Gets Into Tap Water
This contaminant enters the water supply from natural deposits in rock and soil. It can also be introduced into drinking water sources as a result of industrial discharge.
How to Remove Manganese From Your Water
Effective methods for removing manganese from water include oxidation followed by filtration, ion exchange, and reverse osmosis. Water treatment systems utilizing these technologies are commonly used to reduce the contaminant's concentration.
Should You Test Your Water?
You can check manganese levels in your area by reviewing your community's consumer confidence report or searching on WaterQ. If you use a private well, consider having your water tested by a certified laboratory. You can also look up your local water system on WaterQ or check the Manganese data page for reported levels in your area.
Frequently Asked Questions
Is Manganese dangerous in drinking water?
While lower levels are primarily an aesthetic concern causing black staining, high levels of manganese in drinking water can lead to neurological effects. Keeping levels below the MCL of 50 μg/L minimizes these risks.
How does Manganese get into tap water?
Manganese typically enters tap water from natural underground deposits or from industrial discharge into water sources.
How can I remove Manganese from my water?
Manganese can be removed from drinking water using oxidation/filtration, ion exchange, or reverse osmosis treatment systems.
Source: EPA National Primary Drinking Water Regulations and WaterQ National Database. For more contaminants, visit our contaminant library.
What actually removes manganese
Manganese usually travels with iron on well water, and the same oxidizing or greensand filter handles both. It is worth taking more seriously than its "secondary standard" label suggests: the standard is set for black staining, but EPA also publishes a health advisory, and infants are the sensitive group. If you are on a well with visible black residue, test rather than guess.
Works
- Oxidizing / air-injection filterWhole-house fix for iron staining, manganese and rotten-egg sulfur smell.
- Ion-exchange water softenerThe only real fix for hard water. Also very effective on radium.
- Reverse osmosis (NSF 58)The broadest removal available at home: arsenic, nitrate, fluoride, PFAS, TDS.
Will not fix this
- Basic activated carbon (NSF 42)
- Carbon certified for lead (NSF 53)
- UV disinfection (NSF 55)
- Boiling Makes it worse — evaporation concentrates what's left behind.
Test before you buy.Manganese can't be seen, tasted or smelled, and the right hardware depends on the concentration you actually have. A certified lab test costs a fraction of the wrong filtration system. Start with your local water quality report, and get a mail-in lab test if you're on a private well.
Options that carry the right certification
Ordered cheapest-adequate first. Prices are indicative bands and move often.
| Product | Certification | Upfront | Per year | |
|---|---|---|---|---|
| iSpring WGB32BM Whole House (Iron & Manganese)Whole house | 3-stage whole-house cartridge system with an iron/manganese reduction stage.Catch:Rated for moderate iron only. Heavy well-water iron needs an air-injection or greensand system. | $350–500 | $120–200 | Check price |
| APEC ROES-50 EssenceUnder-sink | Built with WQA-certified components to NSF/ANSI 58.Catch:Needs an under-sink drain connection and a spare hole for the dedicated faucet. Strips minerals — some people dislike the flat taste. | $180–240 | $50–80 | Check price |
| iSpring RCC7AK 6-Stage ROUnder-sink | WQA Gold Seal certified to NSF/ANSI 58.Catch:The alkaline remineralization stage adds minerals back, which slightly raises TDS readings — expected, not a fault. | $200–280 | $60–90 | Check price |
Certification listings change. Before buying, confirm the current listing for the exact model in the NSF certified products database — a manufacturer's marketing page is not a certification. WaterQ earns a commission on purchases made through these links at no extra cost to you; see our affiliate disclosure. This is general information, not medical or engineering advice.
For a full breakdown of certifications, running costs and the models worth considering, see our buying guide for manganese.