VOL. 14, NO. 4, FEBRUARY 2019 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2019 Asian Research Publishing Network (ARPN). All rights reserved. www.arpnjournals.com 792 CALCULATING THE INDEXES OF EARNED VALUE FOR ASSESSMENT THE PERFORMANCE OF WASTE WATER TREATMENT PLANT Firas Kh. Jaber 1 , Saba W. Hachem 2 and Faiq M. S. Al-Zwainy 2 1 Electrical Engineering Technical College, Middle Technical University, Iraq 2 College of Engineering, Al-Nahrain University, Iraq Email: faiq_faiqmohmed@yahoo.com ABSTRACT Earned value system appears to be a compelling technique to use on waste water treatment plant projects to better understand and manage performance. Objectives: The main objective of this study is the practical application of the concept of the earned value management acquired in the Al-Hamza water treatment plant project using Microsoft Project 2016 and finding the performance parameters for the Al-Hamza project, CPI, SPI, and TCPI. Methods: Al-Hamzah waste water treatment plant project was constructed in 2017in Republic of Iraq. The data were collected through the field study of the researcher in the Al-Hamzah project. The project schedule was prepared and then the progress of the work was reviewed periodically and compared to the values planned with the actual values for the cost and duration. Results: it is found that the earned value concept is still not been fully used and recognized within the Iraqi companies, while this research covered the concept of earned value as a trend analysis within the Iraqi construction, the researcher found that the earned value concept is still not been fully used and recognized within the Iraqi companies, reasons for that is not part of this research and can be a subject for further research. While this research covered the concept of earned value as a trend novel analysis within the Iraqi construction, the researcher found that the concept of the earned value management is not fully accepted and acknowledged within other industries; where earned value could be used for help. The engineering industry also fails to fully utilize the concept of earned value. The researcher agrees that further research into the concept of earned value within other industry is worth researching as well as benefits of earned value as a performance measuring tool. Keywords: earned value management, performance measurement, Al-Hamzah waste water treatment plant project. INTRODUCTION Wastewater is a liquid waste from very various human operations, whether domestic, commercial, institutional or industrial, that is collected through a network of pipes and canals to reach a specific assembly point to begin the process of treatment. The point at the water treatment plant. (Mackenzie and Daved, 2000) Wastewater treatment was a process in which sewage is purified of impurities, contaminants, contaminants and organic matter, so that it is then usable for non-human use, or can be disposed of in sewage or water bodies without being contaminated, And the treatment of wastewater in several stages, as follows (Vicent et al, 2018): a) First stage, the water is treated in an initial manner, so that the water is collected from all places to facilitate its treatment. The impurities, fats, oils, grease, sand, rocks and large pieces suspended in the water are removed, cut off and separated from the water by the barrier Located in the treatment plant . b) Liquidation phase: Sewage water is then passed to filters designed to filter water from suspended solid pieces such as iron, wood, glass or large pieces such as cloth or paper so as not to disrupt or damage the equipment during the treatment process. c) The phase of sand and rock removal: At this stage, the sewage is passed in sedimentary basins at a slow speed so that its contents are deposited from the suspended materials from sand, dust, and rocks, solid parts and sometimes some chemicals that facilitate sedimentation such assemioriron- Somewhat expensive) so that a greasy substance floats on the surface and is scraped from any time to any time. d) The deposition phase: This is where the wastewater was placed in the primary sediment tanks, so that the dust, sand and other impurities are deposited with water, and the oil and grease float on the surface to be scrapped. Objectives of these processes are to produce a homogeneous liquid that can be treated biologically to extract the dirt from Disposable or reused. Wastewater is classified according to its source to (Miquel, 2018): a) Domestic Wastewater is the wastewater from homes, commercial places such as markets, restaurants, banks, institutional places such as houses, hospitals and schools. The amount of wastewater coming from homes varies according to the hours of the day, weeks, seasons, the new sewage is characterized by the smell of kerosene, and the old sewage is characterized by its smell is very foul, like the smell of rotten eggs similar to the smell of hydrogen sulfide, and owns the modern sewage gray, Old health color black, ranging from the degree of sewage household temperature is between ten to twenty degrees siliceous. b) Industrial Wastewater is the wastewater from various plants. c) Infiltration and Inflow Water is the water that infiltrates sewage networks from underground water wells by leaking and leaking through damaged pipes or through pipe connections, as well as rainwater entering through manholes and sinks.