I-Intenold ibhekisa kwisixhobo esisetyenziselwa ukudibanisa umbhobho wokufudumeza amanzi kunye nokubuyisa umbhobho kwinkqubo yokufudumeza. Yahlulahlulwe yangamacandelo amabini: Umahluli wamanzi kunye nomqokeleli wamanzi. Umahluli wamanzi sisixhobo sokusasaza kwamanzi esisetyenziselwa ukudibanisa imibhobho yokubonelela ngamanzi yemibhobho yokufudumeza eyahlukeneyo kwinkqubo yamanzi.