Seasonal Variations of the Microbiological Parameters of the Quality of Water in Urban Oued Bouishak of the City of Meknes (Morocco)

The objective of this work is to monitor the bacteriological quality of urban wastewater from the Bouishak wadi in the city of Meknes (Morocco). In this study, bacteriological parameters has monitored at three selected upstream-downstream sites (B1, B2 and B3). The sampling has carried out monthly between 10 and 11 h during a period from January to December 2017. The results obtained show that the average concentrations of the various parameters sought are. 9.88 106 for the total germs; 8.01 106 for total coliforms; 5.92 106 for fecal coliforms; 4.98 106 for fecal streptococci; 1.54 104 for anaerobic sulphite-reducing bacteria and 2.46 105for Escherichia coli (these concentrations are in colony-forming units per 100 ml) and pathogenic germs such as salmonella and anemic vibrio. The genus Salmonella has detected in July and August at station B1. Their presence at this hot time could be due to human activities. For cholera vibrio, no cases were isolated in the waters of the selected sites. However, this contamination exceeds the standards of Moroccan wastewater discharge. The origin and degree of bacterial contamination are due to the human activities and climatic conditions of the region. In view of the above, the urban waters of Bouishak Wadi are of poor quality.