Isishintshi sokushisa samanzi{{0}esisetshenziswa samanzi sisetshenziswa ukudlulisa ukushisa phakathi kwamanzi namanzi. Ngokuphathelene nomjikelezo wokuhlanza, imishini enjalo ngokuvamile idinga ukunakekelwa okuvamile, kodwa umjikelezo othize ungase uncike ezintweni ezifana nekhwalithi yamanzi, imvamisa yokusetshenziswa, njll. Izinyathelo zokuhlanza zingabandakanya ukusetshenziswa kwama-ejenti okuhlanza, ukulawula izinga lokushisa, ukugwema ukulimala kwemishini, njll.
Iyunithi yokushintsha ukushisa kwamanzi-amanzi ihlanganisa isishintshi sokushisa, iphampu ejikelezayo, amapayipi, njll. Injongo eyinhloko yokuhlanza iwukuba kususwe isikali, amadiphozithi, ama-microorganisms, njll., ukuvimbela ukuvaleka nokunciphisa ukusebenza kahle kokushisa. Ngokuphathelene nomjikelezo wokuhlanza, uma izinga lamanzi lihle, lingase libe kanye ngonyaka; uma amanzi eqinile noma equkethe ukungcola okuningi, kungase kudingeke ukuba abe kaningi, njengokuphindwe kabili ngonyaka. Kodwa-ke, abasebenzisi bangase badinge ukuqondiswa okucacile, njengokuthi banganquma kanjani ukuthi ukuhlanza kuyadingeka, noma iziphakamiso ezimweni ezihlukile.
Lapho uhlanza iyunithi-yesishintshi sokushisa samanzi, imininingwane okufanele uyiqaphele ihlanganisa ukuhlanza ukuvala shaqa, ukugwema ukulimala kwamashubhu okushintshanisa ukushisa, ukusebenzisa izinto zokuhlanza ezifanele njengezisombululo ezine-asidi noma ezine-alkaline, kodwa ukuqaphela ukugxilisa ingqondo nezinga lokushisa ukuze uvimbele ukugqwala. Ukuhlanza ngokuphelele ngemuva kokuhlanza kuyadingeka ukuze ugweme izinsalela zokuhlanza. Ukwengeza, kungase kudingeke uhlole ukuvuza noma ukuthi yiziphi izingxenye ezidinga ukushintshwa.
Ngaphezu kwalokho, izindaba zokuvikela imvelo nazo zidinga ukubhekwa, ukuthi ukulahlwa koketshezi olungcolile lokuhlanza kuyahlangabezana yini nemithethonqubo. Futhi, ukuthi ukuhlolwa kokusebenza kuyadingeka yini ngemva kokuhlanza ukuze kuqinisekiswe ukuthi ukusebenza kahle kokushintshanisa ukushisa kubuyiselwa. Noma ngabe zikhona yini izindlela zokuvikela zokulungisa, njengokufaka izihlungi, ukuhlola izinga lamanzi okuvamile, ukuze kunwetshwe umjikelezo wokuhlanza.