Izixhobo zokucoca amanzi ezinamanqanaba amaninzi luhlobo lwezixhobo zokucocwa kwamanzi ezikumgangatho ophezulu, osebenzisa ukuhluzwa kwamanqanaba amaninzi, utshintshiselwano lwe-ion kunye nezinye iinkqubo zokunciphisa ubulukhuni be-ion (ikakhulu i-calcium ion kunye ne-magnesium ion) emanzini, ukuze kuphunyezwe. injongo yokuthambisa amanzi.