Including filter system and high-performance PFHxA filter.
PFHxA is one of the PFAS chemicals that can be detected in drinking water at trace levels. Local homeowners in Marathon often hear about it from utility notices, news stories, or private lab testing, and many decide to take action because PFHxA persists in the environment. Installing a whole-house filter is a practical way to limit exposure from every faucet and shower in your Keys property rather than treating only a single tap.
Because PFHxA usually doesn’t affect taste, smell, or appearance, you can’t rely on sensory cues to know if it’s present—testing is the reliable option. If test results indicate concern, treatment is generally based on adsorption media designed to capture PFAS compounds. When selecting a system for a Marathon home, consider the household’s daily flow and moderate water hardness so the unit can meet typical demand without reducing performance.
For whole-house reduction of PFHxA, the best single filter choice is a quality activated carbon system, usually granular activated carbon (GAC) sized to provide adequate contact time. Carbon adsorption is commonly used for PFAS because the media attracts and holds these compounds as water moves through the bed. A correctly sized whole-house GAC unit treats water used for showers, laundry, and all faucets in your Marathon residence without the flow limits of point-of-use devices—just be sure the tank volume and carbon amount match your household needs.
A whole-house GAC filter is placed at the main water entry so PFHxA is reduced before it reaches plumbing and fixtures—a helpful choice for coastal Marathon homes where corrosion from salt air can be a concern. Media type, bed depth, and service flow rate affect contact time, and high flow rates can lower removal efficiency. Regular media replacement is essential because spent carbon stops capturing PFHxA. Mr. Pure Water can assess your property—whether you’re on municipal supply or a local well or cistern—and size and install a whole-house carbon system that fits your home and maintenance preferences.