The objective of this study was to monitor the freshwater quality in Suez Canal region, Egypt and to determine the efficacy of water treatment system in the removal of contaminates. The hydrographic parameters recorded were air and water temperatures, pH, electric conductivity (EC), turbidity, alkalinity, dissolved oxygen content (DO), chemical oxygen demand (COD), total dissolved solids (TDS), nitrate, nitrite, ammonium and phosphates. All measured physicochemical parameters of fresh water samples are within the acceptable limits except chemical oxygen demand (COD) is above the acceptable limits but all measured physicochemical parameters of treated (tap) water samples are within the acceptable limits.this may be due to dumping of animal waste and the presence of a number of sewage pipes that empty into the canal, but all measured physicochemical parameters of treated (tap) water samples are within the acceptable limits. further check should be done regularly to ascertain the accumulation of toxic substances.