Application of Water Pollution Index for Assessment of Tigris River Ecosystem

Physical and chemical parameters and the concentrations of Cd, Cr, Cu, Ni, Pb and Zn were investigated for water quality assessment of Tigris River, Iraq. With exceptions of Cr and Pb the investigated heavy metals were observed to be within the recommended value for rivers maintaining system and general water from pollution. The results of Pollution index (PI) suggest that the site 3 located in the downstream is more seriously polluted by heavy metals than other sites, attributed to the feeding river input and this site is considerably affected by Different anthropogenic activities.