Significance of water borne fungi isolated from White Nile River and Al-Feetihab town

A total of twenty water samples was collected from both untreated water source (White Nile River) and treated water source (Tap water) as ten water samples each site. Each sample was divided into two groups; group one was inoculated in culture medium (Potato dextrose agar containing Chloramphenicol and Rose Bengal) and group two was inoculated in culture medium (Potato dextrose agar containing Chloramphenicol only). Four genera of aquatic fungi were isolated from White Nile River that inoculated in PDA + Chloramphenicol and Rose Bengal These Were Fusarium species, Aspergillus fumigatus, Candida albicans, and Mucor species with percentage of (36.36%, 36.36%, 18.18%, and 9.09%) respectively. While the isolated genera from White Nile River that inoculated in PDA + Chloramphenicol were five as Fusariums pecies, Aspergillus fumigatus, Candibda albicans, Mucor species and Aspergillus niger with percentage of (38.46%, 15.38%, 30.77%, 7.69% and 7.69%) respectively, and one genus was isolated from tap water that inoculated in both media PDA + Chloramphenicol and Rose Bengal, and in PDA + Chloramphenicol as Fusarium species with percentages of (20%, 10%) respectively. Most genera were shown sensitive when subjected to the different concentrations of chlorine (0.2, 0.5, and 0.7g/50ml) except Candida albicans, Fusarium species, and Aspergillus niger which were shown resist to chlorine concentration 0.5g/50ml. The recovery of fungi from drinking water indicates low levels of quality.