The study was undertaken from April to September 2007 to detect occurrence of Salmonella serotypes in Euphrates river water and its correlation with two indicator organisms (FC & FE) of water contamination. Three stations for study were selected on the river at Al-Nassyriya and one on sewage effluent. High influence for sewage effluents on bacteriological properties of river water (through counting large number of indicators) were found specially in station 2 which lies at the area of sewage effluent outlet with the river and lead to increase of pathogens counts. Salmonella were found in all samples of stations 2,3,4 and in 70% of station 1.The most frequently serotypes were S. anatum (22.72%) and S. typhimurium (20.9%).
