Izixhobo zokukhupha ityuwa emanzini olwandle zibhekisa kwinkqubo yokuguqula amanzi anetyuwa okanye anetyuwa abe ngamanzi amatsha, aselwayo.Bubuchwephesha obubalulekileyo obunokujongana nemiba yokunqongophala kwamanzi kwihlabathi, ngakumbi kwimimandla eselunxwemeni nakwiziqithi apho ukufikelela kumanzi amatsha kunyiniweyo.Kukho iiteknoloji ezininzi zokukhupha ityuwa emanzini olwandle, kuquka i-osmosis eguqukayo (RO), i-distillation, i-electrodialysis (ED), kunye ne-nanofiltration.Phakathi kwezi, i-RO yeyona teknoloji ixhaphakileyo yokukhupha ityuwa emanzini olwandle.