ELI5: Explain Like I'm 5

Reverse osmosis plant

Reverse osmosis plants are special machines that use a process called reverse osmosis to take water from one place and filter it down into another place. Reverse osmosis is like a big strainer or filter. It takes very tiny particles out of the water and leaves the rest of the water to pass through the filter. This makes the water cleaner and safer to drink. The reverse osmosis machine is like a very big strainer or filter that takes all of the particles out of the water. When the water is sent through the reverse osmosis machine it has to go through lots of small filters to make sure that only clean water comes out on the other side.