Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Unhu hwemvura yokunwa hune zvinhu zviviri zvinoti micro-biological uye physico-chemical. Kune zviuru zvezvinhu zvinoratidza kunaka kwemvura. Mumagadzirirwo emvura eruzhinji, mvura inofanira kucheneswa, kunyanya nekushandisa chlorine kana kushandisa ultraviolet light, kana kuti inofanira kucheneswa, kunyanya kana iri mvura yepasi. Kuti uwane mamwe mashoko, tapota ona zvinyorwa zvakasiyana pamusoro pemhando yemvura, kurapwa kwemvura uye mvura yekunwa.  Mubvunzo: Mvura inowanzoshandiswa sei pakuchenesa?
kushandiswa kwechlorination kana kushandiswa kwechiedza cheultra violet