Reverse Osmosis membranes used in water filtration systems can, on average, remove 95% of all total dissoluble solids (TDS) from your water supply. Regular filtration cannot remove TDS’s, only non-dissolved solids.
In Rome’s Silver Package, pressure from your water supply overcomes the “salt” pressure of the dissolved materials and forces the water molecules through a synthetic thin film membrane, leaving the dissolved solids behind. Your water enters the membrane filter element, and two streams leave; the clean water and the water containing the dissolved solid residue, called brine, which is discarded to the drain. Reverse osmosis removes the smallest of materials down to .0001 microns, or 1 Angstrom. It gets down to the molecular level and that’s why ALL bottled water is filtered utilizing reverse osmosis. It can even desalinate water (used US military vessels)!