Ukususwa kwezinto ezingcolileyo: Amanzi ompompo anokuqulatha izingcolisi ezahlukeneyo ezifana neebhaktheriya, iintsholongwane, iintsholongwane, iintsimbi ezinzima, izibulali-zinambuzane, kunye neekhemikhali ezifana neklorini kunye nefluoride. Isicoci samanzi sisusa ngokufanelekileyo okanye sinciphisa ezi zingcolisi, zenza amanzi akhuseleke ukuba angasetyenziswa. uKhuselo lweMpilo...
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