The largest percent of desalinated water used in any country is in Israel , which produces 50 % of its domestic water use from seawater desalination The traditional process used in these operations is vacuum distillation-essentially the boiling of water at less than atmospheric pressure and thus a much lower temperature than normal .
The traditional process used in these operations is vacuum distillation - essentially the boiling of water at less than atmospheric pressure , and thus a much lower temperature than normal .