Ukutshintsha kwemozulu kunye nophuhliso olukhawulezileyo lweshishini lehlabathi kunye nezolimo zenze ingxaki yokunqongophala kwamanzi ahlaziyekileyo ibe mbi kakhulu, kwaye unikezelo lwamanzi ahlaziyekileyo luya lusiba nzima, kangangokuba ezinye izixeko eziselunxwemeni nazo zinqongophele ngokunzulu ngamanzi. Ingxaki yamanzi ibangela imfuneko engazange ibonwe yokukhutshelwa kwetyuwa emanzini olwandle. Isixhobo sokukhupha ityuwa kwiMembrane yinkqubo apho amanzi olwandle angena nge-semi-permeable spiral membrane phantsi koxinzelelo, ityuwa egqithisileyo kunye neeminerali ezisemanzini olwandle ziyavaleka kwicala loxinzelelo oluphezulu kwaye zikhutshelwa ngaphandle ngamanzi olwandle azingiweyo, kwaye amanzi acocekileyo aphuma. ukusuka kwicala eliphantsi loxinzelelo.

Ngokwe-National Bureau of Statistics, isixa sisonke semithombo yamanzi ahlaziyekileyo e-China ibiyi-2830.6billion ye-cubic metres ngo-2015, ibalelwa malunga ne-6% yemithombo yamanzi yehlabathi, ibekwe kwindawo yesine kwihlabathi. Noko ke, izibonelelo zamanzi acocekileyo ngomntu ngamnye zizikyubhikimitha ezingama-2 300 kuphela, nto leyo esisi-1/35 kuphela somlinganiselo wehlabathi, yaye kukho ukunqongophala komthombo wamanzi acocekileyo endalo. Ngokukhawuleziswa kokwenziwa kwemizi-mveliso kunye nokufudukela ezidolophini, ungcoliseko lwamanzi acocekileyo lubi kakhulu ngenxa yamanzi amdaka avela kwimizi-mveliso kunye nogutyulo lwasekhaya olusezidolophini. Ukukhutshwa kwetyuwa kumanzi olwandle kulindeleke ukuba kube yeyona ndlela iphambili yokongeza amanzi okusela akumgangatho ophezulu. Ushishino lwaseTshayina lokukhupha ityuwa emanzini olwandle lubalelwa kwi-2/3 yetotali. Ukusukela ngeyoMnga yowama-2015, iiprojekthi zokususwa kwetyuwa emanzini olwandle eziyi-139 sele zakhiwe kwilizwe lonke, ngezikali ezizizigidi ezi-1.0265 zeetoni/ngosuku. Amanzi akwimizi-mveliso athatha i-63.60%, kwaye amanzi akwizindlu zokuhlala ama-35.67%. Iprojekthi yehlabathi yokukhupha ityuwa ikakhulu ibonelela ngamanzi akwiindawo zokuhlala (60%), kwaye amanzi avela kwimizi-mveliso athatha kuphela i-28%.

Injongo ebalulekileyo yophuhliso lobuchwepheshe bokususwa kwetyuwa emanzini olwandle kukunciphisa iindleko zokusebenza. Ekubunjweni kweendleko zokusebenza, ukusetyenziswa kwamandla ombane kubangela umlinganiselo omkhulu. Ukunciphisa ukusetyenziswa kwamandla yeyona ndlela isebenzayo yokunciphisa iindleko zokukhupha ityuwa emanzini olwandle.