Madzi ndiye gwero la moyo komanso gwero la zamoyo zonse.Ndi kukula kwa chiwerengero cha anthu ndi chitukuko cha chuma, kufunikira ndi ubwino wa madzi ukukulirakulira.Komabe, kuchuluka kwa kuipitsa kukuchulukirachulukira ndipo dera la kuipitsidwa likukulirakulira.Zimakhudza kwambiri thanzi lathu, monga zitsulo zolemera, mankhwala ophera tizilombo, madzi otayira kuchokera ku zomera za mankhwala, njira yaikulu yothetsera mavutowa ndikuchita madzi.Cholinga cha mankhwala amadzi ndikuwongolera madzi, ndiko kuti, kuchotsa zinthu zovulaza m'madzi pogwiritsa ntchito njira zamakono, ndipo madzi oyeretsedwa amatha kukwaniritsa zofunikira za madzi akumwa.Dongosololi ndi loyenera madzi apansi ndi pansi ngati malo amadzi osaphika.Madzi opangidwa ndi ukadaulo wosefera komanso ukadaulo wa adsorption amatha kufikira GB5479-2006 "Quality Standard for Drinking Water", CJ94-2005 "Quality Standard for Water Drinking" kapena "Standard for Drinking Water" ya World Health Organisation.Ukadaulo wolekanitsa, ndiukadaulo woletsa kubereka.Kwa madzi apadera, monga madzi a m'nyanja, madzi a m'nyanja, pangani njira yochizira molingana ndi lipoti lenileni la kusanthula khalidwe la madzi.