Most people's views on desalination are based on outdated costs. Current costs for reverse osmosis are $0.0007 per litre, and each litre takes just 3 Wh of ele

Most people's views on desalination are based on outdated costs. Current costs for reverse osmosis are $0.0007 per litre, and each litre takes just 3 Wh of electricity, which is less energy than it would take to boil the water for a cup of tea... if you were making your cup of tea in a shot glass.