This template depicts a reverse osmosis water treatment system. It starts with a pressure gauge indicator, followed by an ultrafilter (UF). The water then passes through a nanofilter (NF) and a pump. There are four stages of reverse osmosis (RO) labeled RO Stage 1 to RO Stage 4. Each stage is equipped with pressure indicators (PI) and valves. The treated water is measured by a flowmeter, and the permeate stream is directed out. Condensate is also indicated, showing the system's efficiency in water purification.