Ukupholisa umoya kulapho impompo yobushushu epholileyo iyindawo ephakathi yomoya esebenzisa umoya njengomthombo obandayo (ubushushu) kunye namanzi njengengqele (ubushushu) medium.Njengesixhobo esihlanganisiweyo semithombo yomibini ebandayo kunye nobushushu, ipompo yokushisa epholileyo yomoya isusa iindawo ezininzi ezincedisayo ezifana neenqaba zokupholisa, iimpompo zamanzi, iibhoyili kunye neenkqubo zombhobho ezihambelanayo.Inkqubo inesakhiwo esilula, igcina indawo yokufakela, ukugcinwa ngokufanelekileyo kunye nokulawula, kwaye igcina amandla, ngakumbi afanelekileyo kwiindawo ezingenayo imithombo yamanzi.