With the commissioning of the30 UK-MGD (135,000 m3/d) Tuas Desalination Plant in September 2005, seawater/ocean desalination via reverse osmosis (RO) has become the 4th Tap for a diversified water supply system in Singapore, providing about 10% of the source water. The other three are: local surface water, imported surface water, and reclaimed wate...