Quick Answer: Reverse osmosis pushes water under pressure through a special, semi-permeable TFC polyamide membrane. This membrane has super tiny pores, 0.0001 µm, that block 90-99% of dissolved gunk while letting pure water molecules zip right through. A full RO system cleans water through 4-7 steps, including pre-filtering sediment. Advanced water treatment, like reverse osmosis, offers real solutions for today’s water quality problems. AMPAC USA’s commercial and industrial systems are built to handle these specific water treatment needs, with certified, proven performance.