Bupanduluzi Buyungizyidwe

a Mbunga ya World Health Organization ikulwaizya kubelesya nzila ziindene-indene kutegwa mugwisye tombe lili mumaanzi ngomubelesya aŋanda, mbuli kwaabikka musamu uutegwa chlorine, kwaabikka muzibikkilo akwaabikka azuba (solar disinfection), filtration, alimwi akwaajika.