Microbiological Assessment of Marketed Drinking Water in Gaza City

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creativework.keywordsMicrobiological Assessmenten
dc.contributor.authorShady Al Tartoryen
dc.contributor.authorشادي الترتوريar
dc.date.accessioned2023-08-20T07:58:33Z
dc.date.available2023-08-20T07:58:33Z
dc.date.issued2009-06-20
dc.description.abstractWater shortage is becoming one of the most important problem in the world today, specially in area as Gaza strip where it suffered from severe shortage. The microbiological quality of water in Gaza strip is so poor. So, to this reason we performed this study that aimed to investigate the microbiological quality of the different types of marketed drinking water in the Gaza city. The study population consisted of 20 samples collected from desalination plants, 12 samples from water distribution cars, 25 samples from vending machines, and 12 samples from bottled water that manufactured in the Gaza city. An experimental design was used to verify water microbiological quality using Membrane Filtration Technique (sterile nitrocellulose acetate membrane filters) placed on MacConkey, cetrimide, and Doxi's media for isolation and detection of both total and fecal coliforms, Pseudomonas aeruginosa, and fungi (mold and yeast) respectively. The results of water samples that collected from desalination plants showed that 12 samples (60%) out of 20 samples were contaminated with total coliforms (1-50 cfu/100ml ). 50% of samples that collected from distribution cars (6 out of 12) were found to be contaminated with total coliforms in a level of (1-20 cfu/100ml.) The water samples that collected from vending machines also showed a high percentage contamination as in the desalination plants where 15 samples out of 25 (60%) were found to be contaminated with total coliforms in a range of (1-50 cfu/100ml). Regarding the presence of fecal coliform in the different water samples, we found 6 samples out of 20 from the desalination plants (30%) were contaminated with fecal coliforms in a range of (1-30 cfu/100ml); 5 samples out of 12 (41.7%) in the water collected from distribution cars in a range of (1-10 cfu/100ml); and 4 samples out of 25 (16%) in the water collected from vending machines. Regarding the presence of Pseudomonas aeruginosa in the tested samples, 45% (9 out of 20) of samples that collected from desalination plants were found to be contaminated in the level of (1- 200 cfu/250ml). However, a 50% (6 out of 12) of samples in water collected from distribution cars were found to be contaminated in the level of (1-20 cfu/250ml ). The vending machines showed 48% (12 out of 25) contamination with P. aeruginosa in a range of (1-65 cfu/250ml). The presence of fungi including both yeast and molds were estimated. In the desalination plants, 25% (5 out 20) and 20% (4 out of 20) samples were contaminated with molds (1- 10 cfu/100 ml) and yeast (1-50 cfu/100 ml) respectively; 10 samples (83.3%) and 6 samples (50%) out of 12 were contaminated with molds (1-15cfu/100ml) and yeast (1-20 cfu/100ml) respectively in water samples collected from distribution cars. Finally in the vending machines, we found that 14 samples (56%) and 4 samples (16%) out of 25 were contaminated with molds (1-20 cfu/100ml) and yeast (1-20 cfu/100ml) respectively. Finally the results of water samples collected from bottled water showed that all samples were free from Total and Fecal coliform bacteria . For total bacterial count the results showed that 4 samples (33%) out of 12 samples were contaminated with bacteria ( > 100 cfu /1 ml ) , Meanwhile P. aeruginosa were found at 2 samples (16.6%) out of 12 samples and finally no Yeast or Molds were found in bottled water sampleen
dc.identifier.urihttps://dspace.alquds.edu/handle/20.500.12213/8530
dc.language.isoen_US
dc.publisherAl-Quds Universityen
dc.titleMicrobiological Assessment of Marketed Drinking Water in Gaza Cityen
dc.titleالجودة الميكروبية لعدد من أنواع المياه المباعة في سوق مدينة غزه.ar
dc.typeThesis
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