@Article{, title={Evaluating of The Gharraf River Water Thi Qar Southern Irarq Using The Water Quality Index (WQI)}, author={Naser H. Judran and Zanaib K.Hassoon and Issa H. Atheeb}, journal={Journal of Education for Pure Science مجلة التربية للعلوم الصرفة}, volume={9}, number={2}, pages={77-88}, year={2019}, abstract={Abstract:The Water Quality Index was developed mathematically to evaluate the water quality of Al-GharrafRiver The Qar , the main branch of the Tigris River in the south of Iraq. Water samples were collectedtwice monthly from tow stations during 2017, and 10 parameters analyzed: Total dissolved solids(TDS),the concentration of hydrogen ions(PH), dissolved oxygen(DO), turbidity(TUR), phosphates (SO4), nitrates(NO3), chlorides (Cl), total hardness, electrical conductivity(EC) and alkalinity (ALK). The index classifiedthe river water , excluding turbidity, is poor for drinking at both stations, when turbidity was included, theindex classified the river water is very poor in station GT2 and poor in station GT3 for drinking purpos.The results showed thae seasonal variations are negligible in both stations .The study highlights theimportance of applying the water quality index which indicate the total effect of the ecological factors onsurface water quality and which give a simple interpretation of the monitoring data to help local peopleimproving water quality improving .

} }