EVALUATION OF THE DRINKING WATER QUALITY AND THE EFFICIENCY OF AL-HAWIJA WATER TREATMENT PLANT: A CASE STUDY IN IRAQ

In this paper laboratory tests measured the concentrations of some of the physical, chemical and biological properties to assess the efficiency of Al- Hawija water treatment plant and the quality of drinking water. Samples were taking of raw and treated water .The process repeated every month and for the period of November 2013 -April 2014. Th e results of physical and chemical examination of raw water are within the limits of the standard specifications of the World Health Organization (WHO). Experimental based evaluation work with efficient final results. Research work ensures the quality of drinking water. The evaluation of the efficiency of the stages of conventional treatment showed that the plant operated by efficiently (65.9 7) % of sedimentation stage. Filtration efficiently of the plant ranged between (59-75 %).The efficiency of sterilization is good except for the month of November 2013 (86%) and the months of March and April 2014 (80% and 82 %), respectively.