Including filter system and high-performance Selenium filter.
Selenium is a naturally occurring element that can enter drinking water when it dissolves from certain soils and rocks or through human activities. While small amounts are part of normal nutrition, water isn’t a controlled source, so elevated concentrations are something Marathon homeowners should take seriously. Because selenium is invisible and tasteless, the only reliable way to know if it’s in your supply is a water test; if levels are higher than you’d like, the next step is choosing a treatment designed to remove it effectively.
Selenium can exist in different chemical forms, and that affects how easily it can be removed from water. Typical whole-house systems that focus on chlorine, odor, or sediment often won’t capture dissolved contaminants like selenium. On the Keys, where many properties use municipal water or private wells and where corrosion from coastal salt air can be a concern, it’s especially important to assess your water chemistry first and then match the proper media and technologies. With the right plan, you can reduce selenium for drinking, cooking, bathing, and laundry across your Marathon home.
For whole-house treatment, the single filter type most effective at reducing selenium is a reverse osmosis system configured for point-of-entry use. Reverse osmosis relies on a semipermeable membrane to separate dissolved contaminants from the water, which makes it well suited to remove selenium species that basic carbon filters typically won’t catch. A correctly designed whole-house RO includes prefiltration to protect the membrane from sediment and chlorine, helping the system run reliably for every tap in your Marathon home.
Because selenium’s behavior depends on its chemical form and your source water, a whole-house reverse osmosis system should be sized and configured for your household flow and local conditions. Pretreatment reduces fouling and scaling that can shorten membrane life, and routine maintenance keeps removal consistent over time—important in a tropical maritime environment like Marathon where corrosion and sediment control may matter. Mr. Pure Water can assess your water, recommend the right whole-house RO configuration, and install it so you get dependable selenium reduction without compromising everyday water use.