Including filter system and high-performance 4:2 FTS filter.
4:2 FTS is one of the PFAS chemicals that can travel through soil and groundwater and appear in household water. Liberty homeowners most often hear about it through a utility notice, a private well test, or during a real estate inspection. Because you can’t see or taste 4:2 FTS, many families choose to limit exposure and feel more confident about water used for drinking, cooking, and bathing. Addressing it starts with selecting treatment specifically aimed at PFAS reduction rather than only sediment or taste improvements.
Since 4:2 FTS belongs to the wider PFAS group, reports will sometimes list it alongside other fluorinated compounds even when it’s the one identified. Typical carbon pitchers, water softeners, and sediment cartridges aren’t built to remove PFAS reliably. A more dependable solution for Liberty homes is treating water at the main line so every tap and appliance is protected, rather than relying solely on a single under-sink filter for peace of mind.
To reduce 4:2 FTS throughout the house, the most effective single whole-home option is a high-capacity granular activated carbon (GAC) system sized and specified for PFAS removal. Activated carbon can adsorb many PFAS chemicals, but success depends on adequate carbon volume and sufficient contact time as water flows through the tank. That’s why a full-size tank-based or backwashing GAC unit is often preferable to small inline cartridges when your goal is meaningful whole-home reduction; correct sizing also extends media life and keeps performance steady between services.
A whole-house GAC unit installs on the main water line so it treats showers, sinks, laundry and kitchen water all at once and is normally used with a sediment prefilter to protect the carbon bed from clogging. For contaminants like 4:2 FTS, regular maintenance matters as much as the initial setup because spent carbon loses its ability to adsorb PFAS. Mr. Pure Water in Liberty can help select the right carbon tank and flow capacity for your home so you get consistent, house-wide treatment.