In recent years, desalination is one of the methods that water-scarce countries have looked to, to diversify its supply of potable water. Desalination, which involves the removal of salt, utilises sea water as a supply source to produce potable water for human consumption and for use in industries. Filtration and chemical processes, such as dissolved air flotation and automatic self-cleaning filter, are used as pre-treatment to remove oil and grease and suspended solids to prevent or minimise biofouling, scaling and plugging. Sea water will then be pressurised and forced through a semi-permeable membrane through the sea water reverse osmosis process to produce potable water.