Including filter system and high-performance PFUnA filter.
PFUnA is one of the PFAS chemicals homeowners ask about when they research persistent, hard-to-remove contaminants in drinking water. It can enter supplies from industrial uses and the breakdown of related fluorinated compounds and tends to persist rather than break down quickly. Residents of Marathon Shores may first hear about PFUnA from a utility advisory, local reporting, or a private test of their home water; when that happens it makes sense to consider treatment methods aimed specifically at reducing PFAS.
Because PFUnA is usually present at very low concentrations, it typically won’t change the smell, taste, or appearance of Marathon Shores tap water — which is why testing is the only reliable way to know if it’s present. PFAS like PFUnA act differently from familiar issues such as chlorine taste, sediment, or the hard water many Keys homes experience, so simple point-of-use cartridges often aren’t sufficient. Installing a whole-house system is a practical option for lowering exposure from drinking, cooking, showering, and everyday household use.
For whole-house reduction of PFUnA, the most effective single-filter residential choice is a high-quality granular activated carbon (GAC) system. GAC media provides a very large surface area that can adsorb many organic compounds, including certain PFAS. Success with PFUnA depends on selecting the right carbon type, ensuring adequate contact time, and keeping flow rates appropriate — which is why a properly sized whole-house carbon tank often outperforms small, fast-flow cartridges.
At Mr. Pure Water we commonly install whole-house GAC systems at the main water entry for Marathon Shores homes so every tap and appliance receives treated water. We size systems to match household usage and the local conditions — including hard water and coastal exposure typical of the Florida Keys — to avoid short contact times that reduce PFAS capture. Carbon media also requires routine maintenance and replacement as it loads up; if you have recent water test results, we’ll use them to design the right GAC configuration for PFUnA reduction.