Our take
This is the swap we recommend when someone says “I can only fix one thing with money.” Reverse osmosis is physics, not marketing — the membrane pore size (~0.0001 micron) makes the microplastics question boring, and it takes PFAS and lead off your worry list in the same stroke. A family that quits bottled water typically breaks even inside a year. Get the glass-carafe model; the classic all-plastic-tank version works identically but the carafe version means your finished water touches glass.