Unfortunately, desalination is an e

Unfortunately, desalination is an expensive process using large amounts of energy, but research is currently being carried out into the development of more efficient technology using a combination of different methods.
To supply water to 25% of the world's population living within 25 kilometres of the sea, more desalination plants are expected to be built in the future.
The hope is that the technology currently being developed will lower the costs and help solve the problem of water shortages in many parts of the world.