Hydrochemical and Biological study of surface water in Al-Kut city

Abstract In this study, physicochemical and biological examinations of water samples were performed. These analyses included measuring the pH, EC, TDS, TSS, DO, BOD, COD. Turbidity was also measured. Along with primary cations anions, heavy metals such as Fe, Mn, Zn, Cd, Cu, Co, Pb, Ni, Cr, As, Mo, Hg, Al, Li, Be, Se, V, U, Sr are included. The study hydrochemistry incorporates both geochemistry surface in Al-Kut city well from Tigris River that is discharged into main river. There a total sixteen have been collected. dispersed portion region separately, which onto order to evaluate quality for variety applications, parameters tested, results those compared Iraqi international standards. findings support hypothesis pH ranges neutral slightly alkaline. It characterized by having brackish an abundance Ca2+ SO4 =, predominant ions water. River, arranged following order: Na+> Mg2+>K+, anions organized follows: = > Cl- HCO3 -. contaminated PO4 3- NO3. concentrations trace elements Sr, Ba all within acceptable limits, exception b, exceed these limits. Trace appear be concentrated River. According situation critical. BOD COD readings visibly affected various forms excreta not treated waste Because high salinity (both TDS EC) nutrients, it cannot used drinking. However, may irrigation, its outstanding.