Assessment of Water Quality in the Selected Sites on the Tigris River, Baghdad-Iraq

The monitoring of water quality of Tigris River was carried out during July to December 2013. Ten sampling sites were selected. Raised values of physico-chemical parameters indicate the pollution of Tigris River ecosystem as a result of domestic wastes, municipal sewage, industrial effluent and agricultural runoff that influence the water quality directly or indirectly. Cluster analysis was used to identify the similarity groups between the sampling sites based on the heavy metals concentration. It can be concluded that urbanization, city wastewater and human activates are the most important reasons of deteriorating water quality of Tigris River which are increasing in trend from north to south.