Alternatives To Large-scale Water Exports
In the short run, better allocation of resources and more efficient water conservation technology may keep demand for water in some countries under control. However, a water crisis may occur in the near future that would make bulk water export a more favourable plan.
The canals that would have to be constructed to transfer water require huge investment and operation costs. This would make the cost for consumers of the water expensive. In contrast, the technology needed to desalinise seawater has improved dramatically and has an acceptable cost for urban markets. Whether or not pressures for large-scale water exports continues to increase depends mostly on future advances in desalination technology. If the cost of desalination drops enough, it will be cheaper to generate freshwater from saltwater than to import freshwater from another country. The cost of desalination is currently less than US$1 per cubic meter. The World Water Commission has suggested that desalination will become the favoured method of procuring drinking and industrial-use waters. However, the need for extremely pure water for particular industrial uses would still require freshwater imports.
Read more about this topic: Water Export
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