Got a basic RO at my flat in Hackney. Extra filters feel like overthinking? What's pushing you toward more layers on top?

This is what my filter has: Sediment filter: retention of rust, sand & larger suspended particles Swirler: Restructuring of the water, deletion of pollutant information. Hexagonal water Carbon filter: Reduction of chlorine, chlorinated hydrocarbons, organic pollutants, trihalomethanes and other chem...