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Evaluation of physicochemical and bacteriological quality of Oued Merzeg (Suburbain of Casablanca, Morocco)

Author Affiliations

  • 1 Laboratory of Ecology and Environment, Faculty of Sciences Ben Sik, University Hassan II-Mohammedia, Casablanca, MOROCCO
  • 2 Laboratory of Microbiology and Hygiene of Food and Environment, Institute Pasteur of Morocco, Casablanca, MOROCCO

Int. Res. J. Environment Sci., Volume 3, Issue (6), Pages 75-80, June,22 (2014)


The aim of this study was to determine the physicochemical and microbiological quality of Oued Merzeg. The analyzed waters present an organic pollution represented by the concentration of the organic (DBO5, DCO, Pt, PO4 and NH4). However, analysis of physical parameters and indicators of mineralization, conductivity, salinity, chlorides, sulfates, and water sampled showed a significant mineralization. Parameters monitoring fecal contamination, total coliforms (TC), fecal coliforms (FC) and fecal streptococci (FS), reveal a significant fecal contamination. Water quality of Oued Merzeg pleads for non-conformity of water to be used directly in all areas because they exceed the normative limits generally accepted. The principal component analysis (PCA) evaluated and interpreted complex water quality data sets and apportioned of pollution sources to get better information about water quality of Oued Merzeg.


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