Imishini yokukhipha usawoti emanzini olwandle isho inqubo yokuguqula amanzi olwandle anosawoti noma anosawoti abe amanzi ahlanzekile, aphuzwayo.Kuwubuchwepheshe obubalulekile obungabhekana nezinkinga zokushoda kwamanzi emhlabeni jikelele, ikakhulukazi ezindaweni ezisogwini naseziqhingini lapho ukufinyelela kwamanzi ahlanzekile kulinganiselwe.Kunobuchwepheshe obuningi bokukhipha usawoti emanzini olwandle, okuhlanganisa i-reverse osmosis (RO), i-distillation, i-electrodialysis (ED), kanye ne-nanofiltration.Phakathi kwalokhu, i-RO ubuchwepheshe obusetshenziswa kakhulu ohlelweni lokususa usawoti emanzini olwandle.