Reverse osmosis is a water purification method that employs a semi-permeable membrane to remove ions, molecules, and bigger particles from water. This is a commonly utilized technology that produces drinkable, clean water for both home and industrial uses. In order to push water molecules across the membrane and overcome the natural osmotic pressure, this pressure is required. Reverse osmosis is a water purification method that employs a semi-permeable membrane to remove ions, molecules, and bigger particles from water. This is a commonly utilized technology that produces drinkable, clean water for both home and industrial uses. In order to push water molecules across the membrane and overcome the natural osmotic pressure, this pressure is required. Reverse osmosis is a water purification method that employs a semi-permeable membrane to remove ions, molecules, and bigger particles from water. This is a commonly utilized technology that produces drinkable, clean water for both home and industrial uses. In order to push water molecules across the membrane and overcome the natural osmotic pressure, this pressure is required.