Including filter system and high-performance PFOS filter.
PFOS is one member of the PFAS family that can persist for long periods in the environment and sometimes shows up in drinking water. Because it doesn’t break down readily, small releases can lead to ongoing presence in a supply. Stern homeowners typically first hear about PFOS through their water quality report, local news, or a private test; if you have concerns, confirming your water results and selecting treatment designed for PFAS is the next practical step.
PFOS usually gives no telltale taste or smell, unlike chlorine or other nuisance contaminants, so you can’t rely on your senses to know whether it’s present. That’s why many Stern residents treat water where it enters the house: whole-house treatment protects drinking, cooking, bathing, and laundering rather than only individual taps.
The single most effective option for whole-house PFOS reduction is a high-capacity granular activated carbon (GAC) system formulated for PFAS removal. GAC removes PFOS by adsorbing it onto the media’s large internal surface as water flows through; because PFOS is more stubborn than typical taste-and-odor issues, media quality, bed depth, and correct flow rates are important. A properly sized whole-house GAC unit lets you treat every fixture from one central point without depending on multiple under-sink filters.
A whole-house GAC filter is installed on the main service line so all Stern faucets get treated water; to maintain PFOS reduction you should size the system for peak household flow and follow scheduled media replacements. Mr. Pure Water can help select a carbon configuration suited to PFOS and to your home’s plumbing and usage patterns, and periodic before-and-after testing gives added assurance the system is performing as intended.