APPLICATION OF WATER QUALITY INDEX (CANADIAN MODEL) AND PRINCIPLE COMPONENT ANALYSIS (PCA) FOR DETERMINE THE VALIDITYOF of AL-GHARRAF RIVER WATER/ SOUTHERN OF IRAQ FOR DRINKING
Hussain Y. Al-Rekabi and Maha M. Hassan*
ABSTRACT
The present work is an application of Canadian Water Quality Index (CCME WQI) for drinking water with using Principal components analysis (PCA) for four stations located at the AL-Garraf River, Water samples collected a monthly during the period from November 2014 to October 2015 and were analyzed for physical and chemical properties immediately after collection. CCME WQI was applied using nine water quality parameter include (electric conductivity, total dissolved solid, dissolved oxygen, biological oxygen demand, chemical oxygen Damend, total hardness, pH, turbidity, total alkalinity, fecal coliform bacteria, Ca, Mg, Cl,Na,NO3-2 SO4-2, PO4,Cd, Pb). Based on the results obtained from(CCME WQI), the water quality of River ranged between 78.91-
89.89 which indicate that river has the poor quality. The PCA produced nine significant main components explain more than35.28% of the variance, Na,PO4,Cl,K,Mg,COD,NO3, Cd and total coliform bacteria. Results proved the Water quality is not suitable to be used for drinking purposes in all study sites and that due to the effect of various urban, industrial and agricultural wastes sources.
Keywords: total dissolved solid, dissolved oxygen, biological oxygen demand.
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