Including filter system and high-performance Tungsten filter.
Tungsten is a naturally occurring metal that can enter drinking water at low levels and often goes unnoticed because it’s colorless and odorless. In some places groundwater can pick up higher amounts when it interacts with particular rock or soil, or when industrial influences affect local sources. In Marathon and the Florida Keys, many homeowners—whether on municipal supply or private wells and cisterns—rely on testing to identify metals like tungsten so they know what’s actually in their tap water.
Because research into tungsten in drinking water is still developing, many families take a cautious approach if tests show elevated levels. Clear, normal-tasting water can still contain dissolved metals, so routine testing is a good idea—especially for private well or cistern systems where seasonal shifts and storm events can change water quality. Marathon residents served by municipal providers can also check local water quality reports and confirm conditions with a tap test if they want extra assurance.
To reduce tungsten at the home’s point of entry, a whole-house reverse osmosis system is generally the most effective single-filter solution. RO systems use a semipermeable membrane that rejects many dissolved metals and inorganic contaminants, lowering tungsten before it reaches faucets, showers, and appliances. Simpler media that address taste or odor aren’t usually sufficient for dissolved tungsten, so a full RO with proper prefiltration is recommended to protect the membrane from sediment and chlorine where applicable.
A whole-house reverse osmosis installation can include pressurized storage and a distribution setup to deliver treated water across your Marathon home. Long-term performance depends on correct sizing, steady water pressure, and regular maintenance—membranes can foul over time, especially if hardness, iron, or particulates are present. Coastal salt air and storm exposure in the Keys can accelerate corrosion issues, so homes with wells or aging plumbing may need additional pretreatment; Mr. Pure Water can review your test results and recommend a whole-house RO tailored to your property.