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Iraq is one of the countries that is suffering from water shortage problems and, for this reason, wastewater treatment plantsbecome a necessity to minimize this problem. In this study, the impact of Al-Hilla WWTP (wastewater treatment plant) on theenvironment has been studied. This was achieved using SimaPro software package. This software is a powerful tool for analyzing theenvironmental impact on products during their whole life cycle. A huge amount of knowledge about the environment is built into theprogram and database, enabling to analyze a product with a minimum of specialized knowledge. The results of LCA (life cycleassessment) showed that the impact and damage on the environment by Al-Hilla WWTP was 41 bad points for each 1 m3 of treatedwastewater. The most environmental impacts potentially were global warming, respiratory inorganics and non-renewable energy. Thestudy also showed that most of the effects were the result of the use of cement, steel and electricity consumption Validerad; 2015; Nivå 1; 20150624 (nadhir)