Ibikoresho byinshi byoroshya ibikoresho byo gutunganya amazi nubwoko bwibikoresho byo gutunganya amazi meza cyane, bifashisha ibyiciro byinshi byo kuyungurura, guhanahana ion hamwe nubundi buryo bwo kugabanya ubukana bwa ion (cyane cyane ioni calcium na magnesium ion) mumazi, kugirango ubigereho intego yo koroshya amazi.