Nangona ingakhange ihlawulwe ngqwalaselo, kufanele ukuba ukunqongophala kwamanzi yenye yezona zinto zixhalabisayo kwaye zinobuzaza eziza kuthintela iplanethi kule minyaka izayo. I-Chile ngoku iyasokola eyona mbalela imbi ngembali yayo kwaye maninzi amanye amazwe kwiplanethi asokolayo kule ngxaki inkulu ebangelwa ikakhulu kukutshintsha kwemozulu.
Amanzi yinto yorhwebo exabisekileyo engagqithanga kwaye eya inqabile, ke wonke umntu kufuneka azi xa ewasebenzisa. Ngokweengxelo ezahlukeneyo ezingenisiweyo yiZizwe EzimanyeneyoUkuqhubeka neli zinga lokusetyenziswa kwamanzi, kwi-15 iminyaka akukho nto ingaphaya kwaye akukho nto ingaphantsi kwama-40% amanzi ekuya kufuneka ukuba iplanethi iphile iya kuba ilahlekile. Le ngxaki imbi inokubangela ukungqubana okuqhubekayo phakathi kwamazwe ahlukeneyo kunye iingxaki ezinzulu zemali ehlabathini lonke.
Njengoko benditshilo ngaphambili, ilizwe elichaphazeleka kakhulu kukunqongophala kwamanzi yiChile. Nangona kunjalo, ayisiyiyo yodwa ukusukela ngoko Brasil ithwaxwa yeyona mbalela imbi kakhulu 80 iminyaka. Nangona kunjalo, kukho amazwe apho ngaphandle kokuba neengxaki ezinkulu kunqongophala kwamanzi, akwazile ukoyisa le ngxaki kwaye afumana isisombululo esifanelekileyo. Yimeko kaSirayeli ukuba unyaka 2000 Uhlupheke kakhulu kwimbalela kwaye wakhetha yetyuwa, ukufumana iziphumo ezinkulu namhlanje.
I-China lelinye ilizwe elinengxaki yembalela, ukusombulula ingxaki igunya elikhulu lehlabathi elikhethe ukwakha umjelo omkhulu ye-1000 yeekhilomitha ethatha amanzi ukusuka kumazantsi eli lizwe ukuya emantla. ISpain iye yalwa nembalela ngokuphumeza Iitshaneli ezincinci thatha imvula uyiguqule ibe ngamanzi okusela abantu.